PDB Short entry for 1U7F
HEADER    SIGNALING PROTEIN                       03-AUG-04   1U7F              
TITLE     CRYSTAL STRUCTURE OF THE PHOSPHORYLATED SMAD3/SMAD4 HETEROTRIMERIC    
TITLE    2 COMPLEX                                                              
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: MOTHERS AGAINST DECAPENTAPLEGIC HOMOLOG 3;                 
COMPND   3 CHAIN: A, C;                                                         
COMPND   4 FRAGMENT: MH2 AND LINKER DOMAINS;                                    
COMPND   5 SYNONYM: SMAD 3, MOTHERS AGAINST DPP HOMOLOG 3, MAD3, HMAD-3, JV15-2,
COMPND   6 HSMAD3;                                                              
COMPND   7 ENGINEERED: YES;                                                     
COMPND   8 MOL_ID: 2;                                                           
COMPND   9 MOLECULE: MOTHERS AGAINST DECAPENTAPLEGIC HOMOLOG 4;                 
COMPND  10 CHAIN: B;                                                            
COMPND  11 FRAGMENT: MH2 AND LINKER DOMAINS;                                    
COMPND  12 SYNONYM: SMAD 4, MOTHERS AGAINST DPP HOMOLOG 4, DELETION TARGET IN   
COMPND  13 PANCREATIC CARCINOMA 4, HSMAD4;                                      
COMPND  14 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   3 ORGANISM_COMMON: HUMAN;                                              
SOURCE   4 ORGANISM_TAXID: 9606;                                                
SOURCE   5 GENE: SMAD3, MADH3;                                                  
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   8 EXPRESSION_SYSTEM_STRAIN: ER2566;                                    
SOURCE   9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  10 EXPRESSION_SYSTEM_PLASMID: PTXB1;                                    
SOURCE  11 MOL_ID: 2;                                                           
SOURCE  12 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE  13 ORGANISM_COMMON: HUMAN;                                              
SOURCE  14 ORGANISM_TAXID: 9606;                                                
SOURCE  15 GENE: SMAD4, MADH4, DPC4;                                            
SOURCE  16 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE  17 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE  18 EXPRESSION_SYSTEM_STRAIN: HB101;                                     
SOURCE  19 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  20 EXPRESSION_SYSTEM_PLASMID: PGEX-4T2                                  
KEYWDS    SMAD, TGF-BETA, SIGNAL TRANSDUCTION, PROTEIN COMPLEX,                 
KEYWDS   2 PHOSPHORYLATION, SIGNALING PROTEIN                                   
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    B.M.CHACKO,B.Y.QIN,A.TIWARI,G.SHI,S.LAM,L.J.HAYWARD,M.DE CAESTECKER,  
AUTHOR   2 K.LIN                                                                
REVDAT   3   23-AUG-23 1U7F    1       SEQADV LINK                              
REVDAT   2   24-FEB-09 1U7F    1       VERSN                                    
REVDAT   1   28-SEP-04 1U7F    0                                                
JRNL        AUTH   B.M.CHACKO,B.Y.QIN,A.TIWARI,G.SHI,S.LAM,L.J.HAYWARD,         
JRNL        AUTH 2 M.DE CAESTECKER,K.LIN                                        
JRNL        TITL   STRUCTURAL BASIS OF HETEROMERIC SMAD PROTEIN ASSEMBLY IN     
JRNL        TITL 2 TGF-BETA SIGNALING                                           
JRNL        REF    MOL.CELL                      V.  15   813 2004              
JRNL        REFN                   ISSN 1097-2765                               
JRNL        PMID   15350224                                                     
JRNL        DOI    10.1016/J.MOLCEL.2004.07.016                                 
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.60 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS                                                  
REMARK   3   AUTHORS     : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE-              
REMARK   3               : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU,              
REMARK   3               : READ,RICE,SIMONSON,WARREN                            
REMARK   3                                                                      
REMARK   3  REFINEMENT TARGET : ENGH & HUBER                                    
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.60                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 100.00                         
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : NULL                           
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 92.4                           
REMARK   3   NUMBER OF REFLECTIONS             : 19161                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : THROUGHOUT                      
REMARK   3   FREE R VALUE TEST SET SELECTION  : RANDOM                          
REMARK   3   R VALUE            (WORKING SET) : 0.232                           
REMARK   3   FREE R VALUE                     : 0.247                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : NULL                            
REMARK   3   FREE R VALUE TEST SET COUNT      : 967                             
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : NULL                            
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : NULL                         
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.60                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.69                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 96.50                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : NULL                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2320                       
REMARK   3   BIN FREE R VALUE                    : 0.2460                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 181                          
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : NULL                         
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 4677                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 0                                       
REMARK   3   SOLVENT ATOMS            : 255                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 64.00                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : NULL                                                 
REMARK   3    B22 (A**2) : NULL                                                 
REMARK   3    B33 (A**2) : NULL                                                 
REMARK   3    B12 (A**2) : NULL                                                 
REMARK   3    B13 (A**2) : NULL                                                 
REMARK   3    B23 (A**2) : NULL                                                 
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : NULL                            
REMARK   3   ESD FROM SIGMAA              (A) : NULL                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : NULL                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : NULL                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : NULL                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.008                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.700                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : NULL                            
REMARK   3   IMPROPER ANGLES        (DEGREES) : NULL                            
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : RESTRAINED                                
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : NULL                                                 
REMARK   3   KSOL        : NULL                                                 
REMARK   3   BSOL        : NULL                                                 
REMARK   3                                                                      
REMARK   3  NCS MODEL : NULL                                                    
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS.                         RMS   SIGMA/WEIGHT          
REMARK   3   GROUP  1  POSITIONAL            (A) : NULL  ; NULL                 
REMARK   3   GROUP  1  B-FACTOR           (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  PARAMETER FILE  1  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1U7F COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 05-AUG-04.                  
REMARK 100 THE DEPOSITION ID IS D_1000023339.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 08-MAR-03; 07-AUG-02               
REMARK 200  TEMPERATURE           (KELVIN) : 103; 103                           
REMARK 200  PH                             : 7.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 2                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y; N                               
REMARK 200  RADIATION SOURCE               : APS; ROTATING ANODE                
REMARK 200  BEAMLINE                       : 14-BM-C; NULL                      
REMARK 200  X-RAY GENERATOR MODEL          : NULL; RIGAKU RU300                 
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M; M                               
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.0; 1.5418                        
REMARK 200  MONOCHROMATOR                  : NI FILTER/OSMIC MIRROR; NI         
REMARK 200                                   FILTER/OSMIC MIRROR                
REMARK 200  OPTICS                         : MIRRORS; MIRRORS                   
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD; IMAGE PLATE                   
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 4; RIGAKU RAXIS IV    
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 20128                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.500                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 100.000                            
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 92.4                               
REMARK 200  DATA REDUNDANCY                : 5.300                              
REMARK 200  R MERGE                    (I) : 0.05200                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 27.5000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.50                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.60                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 87.2                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 3.000                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: MAD; MAD                                       
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: CNS                                                   
REMARK 200 STARTING MODEL: PDB ENTRY 1KHX                                       
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 42.16                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.13                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 50 MM TRIS-HCL, 0-15 MM MAGNESIUM        
REMARK 280  CHLORIDE, 5-15% ETHANOL, PH 7.5, VAPOR DIFFUSION, HANGING DROP,     
REMARK 280  TEMPERATURE 298K                                                    
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21                       
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X+1/2,-Y,Z+1/2                                         
REMARK 290       3555   -X,Y+1/2,-Z+1/2                                         
REMARK 290       4555   X+1/2,-Y+1/2,-Z                                         
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000       24.23550            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000      102.88950            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       30.27250            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000      102.88950            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       24.23550            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       30.27250            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: TRIMERIC                          
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TRIMERIC                   
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 6780 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 24930 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -26.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, C                               
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 465                                                                      
REMARK 465 MISSING RESIDUES                                                     
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                       
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                
REMARK 465                                                                      
REMARK 465   M RES C SSSEQI                                                     
REMARK 465     ALA B   418                                                      
REMARK 465     GLY B   419                                                      
REMARK 465     ARG B   420                                                      
REMARK 465     ALA B   421                                                      
REMARK 465     PRO B   422                                                      
REMARK 465     GLY B   423                                                      
REMARK 465     ALA B   456                                                      
REMARK 465     ALA B   457                                                      
REMARK 465     ALA B   458                                                      
REMARK 465     ALA B   459                                                      
REMARK 465     ALA B   460                                                      
REMARK 465     GLN B   461                                                      
REMARK 465     ALA B   462                                                      
REMARK 465     ALA B   463                                                      
REMARK 465     ALA B   464                                                      
REMARK 465     VAL B   465                                                      
REMARK 465     ALA B   466                                                      
REMARK 465     GLY B   467                                                      
REMARK 465     ASN B   468                                                      
REMARK 465     ILE B   469                                                      
REMARK 465     PRO B   470                                                      
REMARK 465     GLY B   471                                                      
REMARK 465     PRO B   472                                                      
REMARK 465     GLY B   473                                                      
REMARK 465     SER B   474                                                      
REMARK 465     VAL B   475                                                      
REMARK 465     GLY B   476                                                      
REMARK 465     GLY B   477                                                      
REMARK 465     ILE B   478                                                      
REMARK 465     ALA B   479                                                      
REMARK 465     PRO B   480                                                      
REMARK 465     ALA B   481                                                      
REMARK 465     ILE B   482                                                      
REMARK 465     SER B   483                                                      
REMARK 465     LEU B   484                                                      
REMARK 465     SER B   485                                                      
REMARK 465     ALA B   486                                                      
REMARK 465     ALA B   487                                                      
REMARK 465     ALA B   488                                                      
REMARK 465     GLY B   489                                                      
REMARK 465     ASP B   547                                                      
REMARK 465     PRO B   548                                                      
REMARK 465     GLN B   549                                                      
REMARK 465     PRO B   550                                                      
REMARK 465     LEU B   551                                                      
REMARK 465     ASP B   552                                                      
REMARK 465     GLU C   228                                                      
REMARK 465     PRO C   229                                                      
REMARK 470                                                                      
REMARK 470 MISSING ATOM                                                         
REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER;           
REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER;          
REMARK 470 I=INSERTION CODE):                                                   
REMARK 470   M RES CSSEQI  ATOMS                                                
REMARK 470     ILE A 419    CD1                                                 
REMARK 470     ILE C 419    CD1                                                 
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT                     
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT.                            
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI           DISTANCE          
REMARK 500   N    SER C   275     O    HOH C   458              1.96            
REMARK 500   O    HIS C   327     N    ALA C   329              2.06            
REMARK 500   OE2  GLU B   520     O    HOH B   169              2.07            
REMARK 500   OE1  GLN A   346     O    HOH A   476              2.07            
REMARK 500   NE2  GLN B   366     O    HOH B    77              2.07            
REMARK 500   O    ASP C   262     O    HOH C   516              2.09            
REMARK 500   O    GLY C   415     O    HOH C   478              2.09            
REMARK 500   O    HOH C   426     O    HOH C   453              2.09            
REMARK 500   NH1  ARG B   497     O    HOH B   120              2.10            
REMARK 500   O    TYR C   298     O    HOH C   486              2.10            
REMARK 500   O    HOH B    23     O    HOH B   257              2.10            
REMARK 500   N    ASP B   424     O    HOH B    98              2.10            
REMARK 500   OG   SER C   236     O    HOH C   513              2.11            
REMARK 500   O    VAL B   437     O    HOH B    67              2.12            
REMARK 500   O    HOH A   427     O    HOH A   456              2.12            
REMARK 500   O    PRO A   328     O    HOH A   509              2.14            
REMARK 500   O    HOH A   426     O    HOH A   472              2.14            
REMARK 500   O    HOH A   492     O    HOH C   427              2.15            
REMARK 500   O    HOH B    88     O    HOH B   208              2.16            
REMARK 500   NE1  TRP B   509     O    HOH B    88              2.16            
REMARK 500   N    GLY A   301     O    HOH A   460              2.17            
REMARK 500   N    SER B   517     O    HOH B   169              2.18            
REMARK 500   O    PHE C   231     N    CYS C   233              2.18            
REMARK 500   O    HOH A   445     O    HOH A   508              2.18            
REMARK 500   O    LEU C   273     O    HOH C   468              2.19            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS                                             
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC             
REMARK 500 SYMMETRY ARE IN CLOSE CONTACT.  AN ATOM LOCATED WITHIN 0.15          
REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A           
REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375             
REMARK 500 INSTEAD OF REMARK 500.  ATOMS WITH NON-BLANK ALTERNATE               
REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS.            
REMARK 500                                                                      
REMARK 500 DISTANCE CUTOFF:                                                     
REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS              
REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS                  
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI  SSYMOP   DISTANCE          
REMARK 500   O    HOH A   443     O    HOH C   461     4566     2.19            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND ANGLES                                       
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1)              
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   ATM2   ATM3                                     
REMARK 500    PRO A 229   C   -  N   -  CA  ANGL. DEV. =  10.0 DEGREES          
REMARK 500    TRP C 326   N   -  CA  -  C   ANGL. DEV. =  16.7 DEGREES          
REMARK 500    PRO C 328   C   -  N   -  CA  ANGL. DEV. =   9.4 DEGREES          
REMARK 500    ARG C 386   N   -  CA  -  C   ANGL. DEV. = -16.6 DEGREES          
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    LEU A 240     -130.66     78.31                                   
REMARK 500    HIS A 327      118.88    -36.40                                   
REMARK 500    PRO A 328      -24.38    -35.12                                   
REMARK 500    ALA A 329       30.59    -94.40                                   
REMARK 500    VAL A 377      -44.43     71.09                                   
REMARK 500    ALA A 382      164.55    -47.96                                   
REMARK 500    GLU A 383      -22.56     76.60                                   
REMARK 500    THR A 412       -0.75    -53.53                                   
REMARK 500    ILE A 419       91.70    -64.98                                   
REMARK 500    ARG A 420      169.50    -49.17                                   
REMARK 500    SER A 422     -153.04    -54.46                                   
REMARK 500    SER B 315       67.40   -101.58                                   
REMARK 500    ASN B 316     -159.45    118.03                                   
REMARK 500    HIS B 317      157.93     -3.90                                   
REMARK 500    PRO B 318     -130.90    -82.31                                   
REMARK 500    ALA B 319       99.58     58.02                                   
REMARK 500    MET B 331     -137.89     78.48                                   
REMARK 500    CYS B 345       75.44   -118.14                                   
REMARK 500    TYR B 353     -157.93    -75.52                                   
REMARK 500    ASN B 369      119.98   -160.81                                   
REMARK 500    LYS B 385        2.96    -60.79                                   
REMARK 500    VAL B 387     -167.37   -121.48                                   
REMARK 500    LYS B 392      -64.50    -94.35                                   
REMARK 500    GLU B 394      -26.03     55.55                                   
REMARK 500    CYS B 401       92.74    -69.81                                   
REMARK 500    ALA B 406     -173.69    -67.37                                   
REMARK 500    ALA B 425      -89.65   -148.26                                   
REMARK 500    HIS B 427       89.23    -60.38                                   
REMARK 500    PRO B 431      123.01    -38.43                                   
REMARK 500    SER B 432      -11.64     90.18                                   
REMARK 500    VAL B 506      -83.55     71.66                                   
REMARK 500    TRP B 509     -140.56   -130.50                                   
REMARK 500    PRO B 511       34.69    -67.26                                   
REMARK 500    ASP B 512       27.89   -160.99                                   
REMARK 500    MET B 543       56.50   -118.52                                   
REMARK 500    PRO B 544      116.86    -15.65                                   
REMARK 500    ILE B 545      147.66     20.06                                   
REMARK 500    TRP C 232      -18.61     39.89                                   
REMARK 500    CYS C 233      149.18    178.45                                   
REMARK 500    LEU C 240     -124.11     78.08                                   
REMARK 500    SER C 264       66.15   -115.16                                   
REMARK 500    ASN C 276       84.73   -161.39                                   
REMARK 500    VAL C 277      -21.22    -39.35                                   
REMARK 500    ARG C 292       -1.49    -54.41                                   
REMARK 500    HIS C 327       77.21     -5.47                                   
REMARK 500    PRO C 328      -40.84     12.52                                   
REMARK 500    ASN C 339      139.87   -173.63                                   
REMARK 500    VAL C 377      -56.87     71.18                                   
REMARK 500    GLU C 383      -14.65    109.73                                   
REMARK 500    ARG C 385       30.53    -89.41                                   
REMARK 500                                                                      
REMARK 500 THIS ENTRY HAS      51 RAMACHANDRAN OUTLIERS.                        
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1U7V   RELATED DB: PDB                                   
DBREF  1U7F A  228   425  UNP    P84022   SMAD3_HUMAN    228    424             
DBREF  1U7F B  314   552  UNP    Q13485   SMAD4_HUMAN    314    552             
DBREF  1U7F C  228   425  UNP    P84022   SMAD3_HUMAN    228    424             
SEQADV 1U7F SEP A  423  UNP  P84022    SER   423 MODIFIED RESIDUE               
SEQADV 1U7F SEP A  425  UNP  P84022    SER   425 MODIFIED RESIDUE               
SEQADV 1U7F SEP C  423  UNP  P84022    SER   423 MODIFIED RESIDUE               
SEQADV 1U7F SEP C  425  UNP  P84022    SER   425 MODIFIED RESIDUE               
SEQRES   1 A  198  GLU PRO ALA PHE TRP CYS SER ILE SER TYR TYR GLU LEU          
SEQRES   2 A  198  ASN GLN ARG VAL GLY GLU THR PHE HIS ALA SER GLN PRO          
SEQRES   3 A  198  SER MET THR VAL ASP GLY PHE THR ASP PRO SER ASN SER          
SEQRES   4 A  198  GLU ARG PHE CYS LEU GLY LEU LEU SER ASN VAL ASN ARG          
SEQRES   5 A  198  ASN ALA ALA VAL GLU LEU THR ARG ARG HIS ILE GLY ARG          
SEQRES   6 A  198  GLY VAL ARG LEU TYR TYR ILE GLY GLY GLU VAL PHE ALA          
SEQRES   7 A  198  GLU CYS LEU SER ASP SER ALA ILE PHE VAL GLN SER PRO          
SEQRES   8 A  198  ASN CYS ASN GLN ARG TYR GLY TRP HIS PRO ALA THR VAL          
SEQRES   9 A  198  CYS LYS ILE PRO PRO GLY CYS ASN LEU LYS ILE PHE ASN          
SEQRES  10 A  198  ASN GLN GLU PHE ALA ALA LEU LEU ALA GLN SER VAL ASN          
SEQRES  11 A  198  GLN GLY PHE GLU ALA VAL TYR GLN LEU THR ARG MET CYS          
SEQRES  12 A  198  THR ILE ARG MET SER PHE VAL LYS GLY TRP GLY ALA GLU          
SEQRES  13 A  198  TYR ARG ARG GLN THR VAL THR SER THR PRO CYS TRP ILE          
SEQRES  14 A  198  GLU LEU HIS LEU ASN GLY PRO LEU GLN TRP LEU ASP LYS          
SEQRES  15 A  198  VAL LEU THR GLN MET GLY SER PRO SER ILE ARG CYS SER          
SEQRES  16 A  198  SEP VAL SEP                                                  
SEQRES   1 B  239  ILE SER ASN HIS PRO ALA PRO GLU TYR TRP CYS SER ILE          
SEQRES   2 B  239  ALA TYR PHE GLU MET ASP VAL GLN VAL GLY GLU THR PHE          
SEQRES   3 B  239  LYS VAL PRO SER SER CYS PRO ILE VAL THR VAL ASP GLY          
SEQRES   4 B  239  TYR VAL ASP PRO SER GLY GLY ASP ARG PHE CYS LEU GLY          
SEQRES   5 B  239  GLN LEU SER ASN VAL HIS ARG THR GLU ALA ILE GLU ARG          
SEQRES   6 B  239  ALA ARG LEU HIS ILE GLY LYS GLY VAL GLN LEU GLU CYS          
SEQRES   7 B  239  LYS GLY GLU GLY ASP VAL TRP VAL ARG CYS LEU SER ASP          
SEQRES   8 B  239  HIS ALA VAL PHE VAL GLN SER TYR TYR LEU ASP ARG GLU          
SEQRES   9 B  239  ALA GLY ARG ALA PRO GLY ASP ALA VAL HIS LYS ILE TYR          
SEQRES  10 B  239  PRO SER ALA TYR ILE LYS VAL PHE ASP LEU ARG GLN CYS          
SEQRES  11 B  239  HIS ARG GLN MET GLN GLN GLN ALA ALA THR ALA GLN ALA          
SEQRES  12 B  239  ALA ALA ALA ALA GLN ALA ALA ALA VAL ALA GLY ASN ILE          
SEQRES  13 B  239  PRO GLY PRO GLY SER VAL GLY GLY ILE ALA PRO ALA ILE          
SEQRES  14 B  239  SER LEU SER ALA ALA ALA GLY ILE GLY VAL ASP ASP LEU          
SEQRES  15 B  239  ARG ARG LEU CYS ILE LEU ARG MET SER PHE VAL LYS GLY          
SEQRES  16 B  239  TRP GLY PRO ASP TYR PRO ARG GLN SER ILE LYS GLU THR          
SEQRES  17 B  239  PRO CYS TRP ILE GLU ILE HIS LEU HIS ARG ALA LEU GLN          
SEQRES  18 B  239  LEU LEU ASP GLU VAL LEU HIS THR MET PRO ILE ALA ASP          
SEQRES  19 B  239  PRO GLN PRO LEU ASP                                          
SEQRES   1 C  198  GLU PRO ALA PHE TRP CYS SER ILE SER TYR TYR GLU LEU          
SEQRES   2 C  198  ASN GLN ARG VAL GLY GLU THR PHE HIS ALA SER GLN PRO          
SEQRES   3 C  198  SER MET THR VAL ASP GLY PHE THR ASP PRO SER ASN SER          
SEQRES   4 C  198  GLU ARG PHE CYS LEU GLY LEU LEU SER ASN VAL ASN ARG          
SEQRES   5 C  198  ASN ALA ALA VAL GLU LEU THR ARG ARG HIS ILE GLY ARG          
SEQRES   6 C  198  GLY VAL ARG LEU TYR TYR ILE GLY GLY GLU VAL PHE ALA          
SEQRES   7 C  198  GLU CYS LEU SER ASP SER ALA ILE PHE VAL GLN SER PRO          
SEQRES   8 C  198  ASN CYS ASN GLN ARG TYR GLY TRP HIS PRO ALA THR VAL          
SEQRES   9 C  198  CYS LYS ILE PRO PRO GLY CYS ASN LEU LYS ILE PHE ASN          
SEQRES  10 C  198  ASN GLN GLU PHE ALA ALA LEU LEU ALA GLN SER VAL ASN          
SEQRES  11 C  198  GLN GLY PHE GLU ALA VAL TYR GLN LEU THR ARG MET CYS          
SEQRES  12 C  198  THR ILE ARG MET SER PHE VAL LYS GLY TRP GLY ALA GLU          
SEQRES  13 C  198  TYR ARG ARG GLN THR VAL THR SER THR PRO CYS TRP ILE          
SEQRES  14 C  198  GLU LEU HIS LEU ASN GLY PRO LEU GLN TRP LEU ASP LYS          
SEQRES  15 C  198  VAL LEU THR GLN MET GLY SER PRO SER ILE ARG CYS SER          
SEQRES  16 C  198  SEP VAL SEP                                                  
MODRES 1U7F SEP A  423  SER  PHOSPHOSERINE                                      
MODRES 1U7F SEP A  425  SER  PHOSPHOSERINE                                      
MODRES 1U7F SEP C  423  SER  PHOSPHOSERINE                                      
MODRES 1U7F SEP C  425  SER  PHOSPHOSERINE                                      
HET    SEP  A 423      10                                                       
HET    SEP  A 425      10                                                       
HET    SEP  C 423      10                                                       
HET    SEP  C 425      11                                                       
HETNAM     SEP PHOSPHOSERINE                                                    
HETSYN     SEP PHOSPHONOSERINE                                                  
FORMUL   1  SEP    4(C3 H8 N O6 P)                                              
FORMUL   4  HOH   *255(H2 O)                                                    
HELIX    1   1 GLY A  272  LEU A  274  5                                   3    
HELIX    2   2 ASN A  280  ARG A  287  1                                   8    
HELIX    3   3 ARG A  288  ILE A  290  5                                   3    
HELIX    4   4 SER A  317  TYR A  324  1                                   8    
HELIX    5   5 ASN A  345  GLN A  354  1                                  10    
HELIX    6   6 SER A  355  GLN A  358  5                                   4    
HELIX    7   7 GLY A  359  GLN A  365  1                                   7    
HELIX    8   8 LEU A  366  MET A  369  5                                   4    
HELIX    9   9 THR A  388  THR A  392  5                                   5    
HELIX   10  10 ASN A  401  THR A  412  1                                  12    
HELIX   11  11 GLY B  365  LEU B  367  5                                   3    
HELIX   12  12 THR B  373  HIS B  382  1                                  10    
HELIX   13  13 TYR B  412  GLU B  417  1                                   6    
HELIX   14  14 ASP B  439  GLN B  455  1                                  17    
HELIX   15  15 GLY B  491  ARG B  496  1                                   6    
HELIX   16  16 SER B  517  THR B  521  5                                   5    
HELIX   17  17 LEU B  529  HIS B  541  1                                  13    
HELIX   18  18 ASN C  280  ARG C  288  1                                   9    
HELIX   19  19 SER C  317  GLN C  322  1                                   6    
HELIX   20  20 ASN C  345  GLN C  354  1                                  10    
HELIX   21  21 GLY C  359  GLN C  365  1                                   7    
HELIX   22  22 LEU C  366  MET C  369  5                                   4    
HELIX   23  23 THR C  388  THR C  392  5                                   5    
HELIX   24  24 ASN C  401  THR C  412  1                                  12    
SHEET    1   A 3 GLN A 242  ARG A 243  0                                        
SHEET    2   A 3 CYS A 233  GLU A 239 -1  N  GLU A 239   O  GLN A 242           
SHEET    3   A 3 PHE A 248  ALA A 250 -1  O  PHE A 248   N  ILE A 235           
SHEET    1   B 6 GLN A 242  ARG A 243  0                                        
SHEET    2   B 6 CYS A 233  GLU A 239 -1  N  GLU A 239   O  GLN A 242           
SHEET    3   B 6 TRP A 395  LEU A 400 -1  O  GLU A 397   N  SER A 236           
SHEET    4   B 6 THR A 371  PHE A 376 -1  N  ILE A 372   O  LEU A 398           
SHEET    5   B 6 ILE A 313  GLN A 316 -1  N  PHE A 314   O  SER A 375           
SHEET    6   B 6 CYS A 332  ILE A 334 -1  O  CYS A 332   N  VAL A 315           
SHEET    1   C 5 ARG A 268  CYS A 270  0                                        
SHEET    2   C 5 SER A 254  ASP A 258  1  N  THR A 256   O  PHE A 269           
SHEET    3   C 5 VAL A 294  ILE A 299 -1  O  LEU A 296   N  MET A 255           
SHEET    4   C 5 GLU A 302  CYS A 307 -1  O  GLU A 306   N  ARG A 295           
SHEET    5   C 5 ASN A 339  ASN A 344 -1  O  LEU A 340   N  ALA A 305           
SHEET    1   D 6 PHE B 339  PRO B 342  0                                        
SHEET    2   D 6 TYR B 322  PHE B 329 -1  N  ILE B 326   O  PHE B 339           
SHEET    3   D 6 TRP B 524  HIS B 528 -1  O  TRP B 524   N  PHE B 329           
SHEET    4   D 6 ILE B 500  PHE B 505 -1  N  LEU B 501   O  ILE B 527           
SHEET    5   D 6 VAL B 407  GLN B 410 -1  N  PHE B 408   O  SER B 504           
SHEET    6   D 6 HIS B 427  ILE B 429 -1  O  ILE B 429   N  VAL B 407           
SHEET    1   E 5 ARG B 361  CYS B 363  0                                        
SHEET    2   E 5 ILE B 347  ASP B 351  1  N  THR B 349   O  PHE B 362           
SHEET    3   E 5 VAL B 387  CYS B 391 -1  O  LEU B 389   N  VAL B 348           
SHEET    4   E 5 VAL B 397  ARG B 400 -1  O  TRP B 398   N  GLU B 390           
SHEET    5   E 5 TYR B 434  PHE B 438 -1  O  ILE B 435   N  VAL B 399           
SHEET    1   F 3 GLN C 242  ARG C 243  0                                        
SHEET    2   F 3 CYS C 233  GLU C 239 -1  N  GLU C 239   O  GLN C 242           
SHEET    3   F 3 PHE C 248  ALA C 250 -1  O  PHE C 248   N  ILE C 235           
SHEET    1   G 6 GLN C 242  ARG C 243  0                                        
SHEET    2   G 6 CYS C 233  GLU C 239 -1  N  GLU C 239   O  GLN C 242           
SHEET    3   G 6 TRP C 395  LEU C 400 -1  O  GLU C 397   N  SER C 236           
SHEET    4   G 6 THR C 371  PHE C 376 -1  N  MET C 374   O  ILE C 396           
SHEET    5   G 6 ILE C 313  GLN C 316 -1  N  GLN C 316   O  ARG C 373           
SHEET    6   G 6 CYS C 332  ILE C 334 -1  O  CYS C 332   N  VAL C 315           
SHEET    1   H 5 ARG C 268  CYS C 270  0                                        
SHEET    2   H 5 SER C 254  ASP C 258  1  N  THR C 256   O  PHE C 269           
SHEET    3   H 5 VAL C 294  ILE C 299 -1  O  VAL C 294   N  VAL C 257           
SHEET    4   H 5 GLU C 302  CYS C 307 -1  O  GLU C 306   N  ARG C 295           
SHEET    5   H 5 ASN C 339  ASN C 344 -1  O  LEU C 340   N  ALA C 305           
LINK         C   SER A 422                 N   SEP A 423     1555   1555  1.32  
LINK         C   SEP A 423                 N   VAL A 424     1555   1555  1.33  
LINK         C   VAL A 424                 N   SEP A 425     1555   1555  1.34  
LINK         C   SER C 422                 N   SEP C 423     1555   1555  1.33  
LINK         C   SEP C 423                 N   VAL C 424     1555   1555  1.32  
LINK         C   VAL C 424                 N   SEP C 425     1555   1555  1.33  
CISPEP   1 HIS B  317    PRO B  318          0        -0.14                     
CRYST1   48.471   60.545  205.779  90.00  90.00  90.00 P 21 21 21    8          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.020631  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.016517  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.004860        0.00000