PDB Short entry for 1MHD
HEADER    COMPLEX (TRANSCRIPTION ACTIVATOR/DNA)   18-AUG-98   1MHD              
TITLE     CRYSTAL STRUCTURE OF A SMAD MH1 DOMAIN BOUND TO DNA                   
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: DNA;                                                       
COMPND   3 CHAIN: C;                                                            
COMPND   4 ENGINEERED: YES;                                                     
COMPND   5 MOL_ID: 2;                                                           
COMPND   6 MOLECULE: DNA;                                                       
COMPND   7 CHAIN: D;                                                            
COMPND   8 ENGINEERED: YES;                                                     
COMPND   9 MOL_ID: 3;                                                           
COMPND  10 MOLECULE: SMAD3;                                                     
COMPND  11 CHAIN: A, B;                                                         
COMPND  12 FRAGMENT: MH1 DOMAIN, RESIDUES 1 - 144;                              
COMPND  13 SYNONYM: SMAD N-DOMAIN;                                              
COMPND  14 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 SYNTHETIC: YES;                                                      
SOURCE   3 MOL_ID: 2;                                                           
SOURCE   4 SYNTHETIC: YES;                                                      
SOURCE   5 MOL_ID: 3;                                                           
SOURCE   6 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   7 ORGANISM_COMMON: HUMAN;                                              
SOURCE   8 ORGANISM_TAXID: 9606;                                                
SOURCE   9 CELLULAR_LOCATION: CYTOPLASM;                                        
SOURCE  10 GENE: SMAD;                                                          
SOURCE  11 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3);                       
SOURCE  12 EXPRESSION_SYSTEM_TAXID: 469008;                                     
SOURCE  13 EXPRESSION_SYSTEM_STRAIN: BL21 (DE3);                                
SOURCE  14 EXPRESSION_SYSTEM_CELLULAR_LOCATION: CYTOPLASM;                      
SOURCE  15 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  16 EXPRESSION_SYSTEM_VECTOR: PGEX-2T;                                   
SOURCE  17 EXPRESSION_SYSTEM_PLASMID: PGEX                                      
KEYWDS    COMPLEX (TRANSCRIPTION ACTIVATOR/DNA), SMAD3 MH1, SMAD                
KEYWDS   2 BINDING ELEMENT, DNA                                                 
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    Y.SHI                                                                 
REVDAT   2   24-FEB-09 1MHD    1       VERSN                                    
REVDAT   1   18-AUG-99 1MHD    0                                                
JRNL        AUTH   Y.SHI,Y.F.WANG,L.JAYARAMAN,H.YANG,J.MASSAGUE,                
JRNL        AUTH 2 N.P.PAVLETICH                                                
JRNL        TITL   CRYSTAL STRUCTURE OF A SMAD MH1 DOMAIN BOUND TO              
JRNL        TITL 2 DNA: INSIGHTS ON DNA BINDING IN TGF-BETA SIGNALING.          
JRNL        REF    CELL(CAMBRIDGE,MASS.)         V.  94   585 1998              
JRNL        REFN                   ISSN 0092-8674                               
JRNL        PMID   9741623                                                      
JRNL        DOI    10.1016/S0092-8674(00)81600-1                                
REMARK   1                                                                      
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.80 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : X-PLOR 3.1                                           
REMARK   3   AUTHORS     : BRUNGER                                              
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.80                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 8.00                           
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 2.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : NULL                           
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 93.6                           
REMARK   3   NUMBER OF REFLECTIONS             : 8490                           
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : R FACTOR                        
REMARK   3   FREE R VALUE TEST SET SELECTION  : RANDOM                          
REMARK   3   R VALUE            (WORKING SET) : 0.212                           
REMARK   3   FREE R VALUE                     : 0.288                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 402                             
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           : 8                            
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.80                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.92                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 81.30                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 870                          
REMARK   3   BIN R VALUE           (WORKING SET) : 0.3400                       
REMARK   3   BIN FREE R VALUE                    : 0.3820                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 5.00                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 39                           
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            : 2042                                    
REMARK   3   NUCLEIC ACID ATOMS       : 548                                     
REMARK   3   HETEROGEN ATOMS          : 0                                       
REMARK   3   SOLVENT ATOMS            : 24                                      
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : NULL                           
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) : 0.014                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.73                            
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : NULL                            
REMARK   3   IMPROPER ANGLES        (DEGREES) : NULL                            
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : NULL                                      
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  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 1MHD COMPLIES WITH FORMAT V. 3.15, 01-DEC-08                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL.                                
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 05-MAY-98                          
REMARK 200  TEMPERATURE           (KELVIN) : 300                                
REMARK 200  PH                             : 5.6                                
REMARK 200  NUMBER OF CRYSTALS USED        : 2                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : N                                  
REMARK 200  RADIATION SOURCE               : ROTATING ANODE                     
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : RIGAKU                             
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.5418                             
REMARK 200  MONOCHROMATOR                  : NI FILTER                          
REMARK 200  OPTICS                         : MIRRORS                            
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : RIGAKU RAXIS IIC                   
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 9228                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.800                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 20.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 2.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 97.0                               
REMARK 200  DATA REDUNDANCY                : 4.300                              
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : 0.05300                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 33.0000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.80                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.90                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 96.5                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : 0.16200                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 9.000                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: NULL                                           
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MIR                          
REMARK 200 SOFTWARE USED: X-PLOR 3.1                                            
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 36.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.43                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PH 5.6                                   
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 21 1                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,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        0.00000            
REMARK 290   SMTRY2   2  0.000000  1.000000  0.000000       30.20000            
REMARK 290   SMTRY3   2  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: TETRAMERIC                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: C, D, A, B                            
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     MET A     1                                                      
REMARK 465     SER A     2                                                      
REMARK 465     SER A     3                                                      
REMARK 465     ILE A     4                                                      
REMARK 465     LEU A     5                                                      
REMARK 465     PRO A     6                                                      
REMARK 465     PHE A     7                                                      
REMARK 465     THR A     8                                                      
REMARK 465     PRO A     9                                                      
REMARK 465     MET B     1                                                      
REMARK 465     SER B     2                                                      
REMARK 465     SER B     3                                                      
REMARK 465     ILE B     4                                                      
REMARK 465     LEU B     5                                                      
REMARK 465     PRO B     6                                                      
REMARK 465     PHE B     7                                                      
REMARK 465     THR B     8                                                      
REMARK 465     PRO B     9                                                      
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS                                      
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,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3)               
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   RES CSSEQI ATM2   DEVIATION                     
REMARK 500    ARG A  80   N     ARG A  80   CA      0.175                       
REMARK 500    ASN A 114   N     ASN A 114   CA      0.180                       
REMARK 500    SER B  78   C     HIS B  79   N      -0.147                       
REMARK 500    ASN B 114   N     ASN B 114   CA      0.158                       
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     DA C1011   O4' -  C1' -  N9  ANGL. DEV. =   2.8 DEGREES          
REMARK 500     DA D2014   O4' -  C1' -  N9  ANGL. DEV. =   2.0 DEGREES          
REMARK 500    ARG A  80   N   -  CA  -  CB  ANGL. DEV. =  14.2 DEGREES          
REMARK 500    ARG A  80   N   -  CA  -  C   ANGL. DEV. = -31.5 DEGREES          
REMARK 500    ASN A 114   N   -  CA  -  C   ANGL. DEV. = -22.2 DEGREES          
REMARK 500    ARG B  80   N   -  CA  -  C   ANGL. DEV. = -19.5 DEGREES          
REMARK 500    LEU B 103   CA  -  CB  -  CG  ANGL. DEV. =  15.6 DEGREES          
REMARK 500    ASN B 114   N   -  CA  -  C   ANGL. DEV. = -22.6 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    LYS A  19       75.92     79.62                                   
REMARK 500    GLN A  23      135.73    133.31                                   
REMARK 500    GLN A  26       -8.78    -58.46                                   
REMARK 500    SER A  78      -21.16     64.66                                   
REMARK 500    HIS A  79       -5.32    154.15                                   
REMARK 500    ARG A  93      -75.61   -143.02                                   
REMARK 500    LEU A  97      112.26    -35.03                                   
REMARK 500    GLU A 107      -27.43     68.20                                   
REMARK 500    PHE A 111       45.71   -101.11                                   
REMARK 500    ALA A 112       45.15    -75.66                                   
REMARK 500    PHE A 113      -27.07     62.15                                   
REMARK 500    LYS A 116       33.38     37.95                                   
REMARK 500    LYS B  19       75.21     80.76                                   
REMARK 500    GLN B  23      133.14    133.07                                   
REMARK 500    GLN B  26       -7.72    -58.95                                   
REMARK 500    SER B  78      -23.04     58.48                                   
REMARK 500    HIS B  79      -16.09    155.60                                   
REMARK 500    ARG B  93      -66.07   -145.34                                   
REMARK 500    LEU B  97      113.40    -34.70                                   
REMARK 500    GLU B 107      -27.45     65.19                                   
REMARK 500    PHE B 111       42.53    -98.84                                   
REMARK 500    ALA B 112       38.77    -68.55                                   
REMARK 500    PHE B 113      -27.79     64.69                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: NON-CIS, NON-TRANS                                         
REMARK 500                                                                      
REMARK 500 THE FOLLOWING PEPTIDE BONDS DEVIATE SIGNIFICANTLY FROM BOTH          
REMARK 500 CIS AND TRANS CONFORMATION.  CIS BONDS, IF ANY, ARE LISTED           
REMARK 500 ON CISPEP RECORDS.  TRANS IS DEFINED AS 180 +/- 30 AND               
REMARK 500 CIS IS DEFINED AS 0 +/- 30 DEGREES.                                  
REMARK 500                                 MODEL     OMEGA                      
REMARK 500 HIS A   79     ARG A   80                 -135.39                    
REMARK 500 HIS B   79     ARG B   80                 -146.13                    
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: PLANAR GROUPS                                              
REMARK 500                                                                      
REMARK 500 PLANAR GROUPS IN THE FOLLOWING RESIDUES HAVE A TOTAL                 
REMARK 500 RMS DISTANCE OF ALL ATOMS FROM THE BEST-FIT PLANE                    
REMARK 500 BY MORE THAN AN EXPECTED VALUE OF 6*RMSD, WITH AN                    
REMARK 500 RMSD 0.02 ANGSTROMS, OR AT LEAST ONE ATOM HAS                        
REMARK 500 AN RMSD GREATER THAN THIS VALUE                                      
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        RMS     TYPE                                    
REMARK 500     DG C1003         0.06    SIDE_CHAIN                              
REMARK 500     DA C1011         0.07    SIDE_CHAIN                              
REMARK 500     DT C1012         0.07    SIDE_CHAIN                              
REMARK 500     DT D2003         0.07    SIDE_CHAIN                              
REMARK 500     DG D2004         0.06    SIDE_CHAIN                              
REMARK 500     DA D2008         0.06    SIDE_CHAIN                              
REMARK 500    TYR A  88         0.07    SIDE_CHAIN                              
REMARK 500    TYR B 125         0.07    SIDE_CHAIN                              
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
DBREF  1MHD A    1   132  UNP    P84022   SMAD3_HUMAN      1    132             
DBREF  1MHD B    1   132  UNP    P84022   SMAD3_HUMAN      1    132             
DBREF  1MHD C 1001  1013  PDB    1MHD     1MHD          1001   1013             
DBREF  1MHD D 2001  2014  PDB    1MHD     1MHD          2001   2014             
SEQRES   1 C   13   DC  DA  DG  DT  DC  DT  DA  DG  DA  DC  DA  DT  DA          
SEQRES   1 D   14   DT  DA  DT  DG  DT  DC  DT  DA  DG  DA  DC  DT  DG          
SEQRES   2 D   14   DA                                                          
SEQRES   1 A  132  MET SER SER ILE LEU PRO PHE THR PRO PRO ILE VAL LYS          
SEQRES   2 A  132  ARG LEU LEU GLY TRP LYS LYS GLY GLU GLN ASN GLY GLN          
SEQRES   3 A  132  GLU GLU LYS TRP CYS GLU LYS ALA VAL LYS SER LEU VAL          
SEQRES   4 A  132  LYS LYS LEU LYS LYS THR GLY GLN LEU ASP GLU LEU GLU          
SEQRES   5 A  132  LYS ALA ILE THR THR GLN ASN VAL ASN THR LYS CYS ILE          
SEQRES   6 A  132  THR ILE PRO ARG SER LEU ASP GLY ARG LEU GLN VAL SER          
SEQRES   7 A  132  HIS ARG LYS GLY LEU PRO HIS VAL ILE TYR CYS ARG LEU          
SEQRES   8 A  132  TRP ARG TRP PRO ASP LEU HIS SER HIS HIS GLU LEU ARG          
SEQRES   9 A  132  ALA MET GLU LEU CYS GLU PHE ALA PHE ASN MET LYS LYS          
SEQRES  10 A  132  ASP GLU VAL CYS VAL ASN PRO TYR HIS TYR GLN ARG VAL          
SEQRES  11 A  132  GLU THR                                                      
SEQRES   1 B  132  MET SER SER ILE LEU PRO PHE THR PRO PRO ILE VAL LYS          
SEQRES   2 B  132  ARG LEU LEU GLY TRP LYS LYS GLY GLU GLN ASN GLY GLN          
SEQRES   3 B  132  GLU GLU LYS TRP CYS GLU LYS ALA VAL LYS SER LEU VAL          
SEQRES   4 B  132  LYS LYS LEU LYS LYS THR GLY GLN LEU ASP GLU LEU GLU          
SEQRES   5 B  132  LYS ALA ILE THR THR GLN ASN VAL ASN THR LYS CYS ILE          
SEQRES   6 B  132  THR ILE PRO ARG SER LEU ASP GLY ARG LEU GLN VAL SER          
SEQRES   7 B  132  HIS ARG LYS GLY LEU PRO HIS VAL ILE TYR CYS ARG LEU          
SEQRES   8 B  132  TRP ARG TRP PRO ASP LEU HIS SER HIS HIS GLU LEU ARG          
SEQRES   9 B  132  ALA MET GLU LEU CYS GLU PHE ALA PHE ASN MET LYS LYS          
SEQRES  10 B  132  ASP GLU VAL CYS VAL ASN PRO TYR HIS TYR GLN ARG VAL          
SEQRES  11 B  132  GLU THR                                                      
FORMUL   5  HOH   *24(H2 O)                                                     
HELIX    1   1 ILE A   11  GLY A   17  1                                   7    
HELIX    2   2 GLN A   26  THR A   45  1                                  20    
HELIX    3   3 LEU A   48  THR A   57  1                                  10    
HELIX    4   4 PRO A   84  TRP A   92  1                                   9    
HELIX    5   5 PRO A  124  HIS A  126  5                                   3    
HELIX    6   6 ILE B   11  GLY B   17  1                                   7    
HELIX    7   7 GLN B   26  THR B   45  1                                  20    
HELIX    8   8 LEU B   48  THR B   57  1                                  10    
HELIX    9   9 PRO B   84  TRP B   92  1                                   9    
HELIX   10  10 PRO B  124  HIS B  126  5                                   3    
SHEET    1   A 2 THR A  66  PRO A  68  0                                        
SHEET    2   A 2 GLU A 119  CYS A 121 -1  N  VAL A 120   O  ILE A  67           
SHEET    1   B 2 ARG A  74  VAL A  77  0                                        
SHEET    2   B 2 ARG A  80  LEU A  83 -1  N  GLY A  82   O  LEU A  75           
SHEET    1   C 2 LEU A 103  ALA A 105  0                                        
SHEET    2   C 2 TYR A 127  ARG A 129 -1  N  GLN A 128   O  ARG A 104           
SHEET    1   D 2 THR B  66  PRO B  68  0                                        
SHEET    2   D 2 GLU B 119  CYS B 121 -1  N  VAL B 120   O  ILE B  67           
SHEET    1   E 2 ARG B  74  VAL B  77  0                                        
SHEET    2   E 2 ARG B  80  LEU B  83 -1  N  GLY B  82   O  LEU B  75           
SHEET    1   F 2 LEU B 103  ALA B 105  0                                        
SHEET    2   F 2 TYR B 127  ARG B 129 -1  N  GLN B 128   O  ARG B 104           
SSBOND   1 CYS A   64    CYS A  109                          1555   1555  2.21  
SSBOND   2 CYS B  109    CYS B  121                          1555   1555  2.49  
CRYST1   45.600   60.400   71.600  90.00 102.00  90.00 P 1 21 1      4          
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      0.021930  0.000000  0.004661        0.00000                         
SCALE2      0.000000  0.016556  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.014279        0.00000