PDB Short entry for 1AN4
HEADER    TRANSCRIPTION/DNA                       15-MAR-97   1AN4              
TITLE     STRUCTURE AND FUNCTION OF THE B/HLH/Z DOMAIN OF USF                   
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: DNA (5'-                                                   
COMPND   3 D(*CP*AP*CP*CP*CP*GP*GP*TP*CP*AP*CP*GP*TP*GP*GP*CP*C P*TP*AP*CP*A)-  
COMPND   4 3');                                                                 
COMPND   5 CHAIN: C;                                                            
COMPND   6 ENGINEERED: YES;                                                     
COMPND   7 MOL_ID: 2;                                                           
COMPND   8 MOLECULE: DNA (5'-                                                   
COMPND   9 D(*GP*TP*GP*TP*AP*GP*GP*CP*CP*AP*CP*GP*TP*GP*AP*CP*C P*GP*GP*GP*T)-  
COMPND  10 3');                                                                 
COMPND  11 CHAIN: D;                                                            
COMPND  12 SYNONYM: UPSTREAM STIMULATORY FACTOR 1;                              
COMPND  13 ENGINEERED: YES;                                                     
COMPND  14 MOL_ID: 3;                                                           
COMPND  15 MOLECULE: PROTEIN (UPSTREAM STIMULATORY FACTOR);                     
COMPND  16 CHAIN: A, B;                                                         
COMPND  17 FRAGMENT: FRAGMENT:B/HLH DNA BINDING DOMAIN MUTATION:R196M, C229S,   
COMPND  18 C248S;                                                               
COMPND  19 ENGINEERED: YES;                                                     
COMPND  20 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 MOL_ID: 2;                                                           
SOURCE   3 MOL_ID: 3;                                                           
SOURCE   4 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   5 ORGANISM_COMMON: HUMAN;                                              
SOURCE   6 ORGANISM_TAXID: 9606;                                                
SOURCE   7 EXPRESSION_SYSTEM: BACTERIA;                                         
SOURCE   8 EXPRESSION_SYSTEM_COMMON: EUBACTERIA;                                
SOURCE   9 EXPRESSION_SYSTEM_TAXID: 2                                           
KEYWDS    PROTEIN-DNA COMPLEX, DOUBLE HELIX, OVERHANGING BASE, TRANSCRIPTION-   
KEYWDS   2 DNA COMPLEX                                                          
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    A.R.FERRE-D'AMARE,P.POGNONEC,R.G.ROEDER,S.K.BURLEY                    
REVDAT   7   07-FEB-24 1AN4    1       REMARK                                   
REVDAT   6   03-NOV-21 1AN4    1       SEQADV                                   
REVDAT   5   03-FEB-21 1AN4    1       AUTHOR JRNL                              
REVDAT   4   26-FEB-20 1AN4    1       REMARK SEQADV                            
REVDAT   3   24-FEB-09 1AN4    1       VERSN                                    
REVDAT   2   01-APR-03 1AN4    1       JRNL                                     
REVDAT   1   17-SEP-97 1AN4    0                                                
JRNL        AUTH   A.R.FERRE-D'AMARE,P.POGNONEC,R.G.ROEDER,S.K.BURLEY           
JRNL        TITL   STRUCTURE AND FUNCTION OF THE B/HLH/Z DOMAIN OF USF.         
JRNL        REF    EMBO J.                       V.  13   180 1994              
JRNL        REFN                   ISSN 0261-4189                               
JRNL        PMID   8306960                                                      
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.90 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) : 2.90                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 6.00                           
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)   (%) : NULL                           
REMARK   3   NUMBER OF REFLECTIONS             : NULL                           
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : NULL                            
REMARK   3   FREE R VALUE TEST SET SELECTION  : NULL                            
REMARK   3   R VALUE            (WORKING SET) : 0.236                           
REMARK   3   FREE R VALUE                     : NULL                            
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : NULL                            
REMARK   3   FREE R VALUE TEST SET COUNT      : NULL                            
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) : NULL                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : NULL                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : NULL                         
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : NULL                         
REMARK   3   BIN R VALUE           (WORKING SET) : NULL                         
REMARK   3   BIN FREE R VALUE                    : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : NULL                         
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            : 1068                                    
REMARK   3   NUCLEIC ACID ATOMS       : 855                                     
REMARK   3   HETEROGEN ATOMS          : 0                                       
REMARK   3   SOLVENT ATOMS            : 0                                       
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) : 0.019                           
REMARK   3   BOND ANGLES            (DEGREES) : 3.000                           
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 1AN4 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY NDB.                                
REMARK 100 THE DEPOSITION ID IS D_1000171022.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 01-JUN-93                          
REMARK 200  TEMPERATURE           (KELVIN) : 253.00                             
REMARK 200  PH                             : 4.75                               
REMARK 200  NUMBER OF CRYSTALS USED        : NULL                               
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : CHESS                              
REMARK 200  BEAMLINE                       : F1                                 
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : NULL                               
REMARK 200  WAVELENGTH OR RANGE        (A) : NULL                               
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : NULL                               
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 6038                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.900                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 15.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 77.2                               
REMARK 200  DATA REDUNDANCY                : 2.600                              
REMARK 200  R MERGE                    (I) : 0.07600                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 14.4000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.90                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 3.00                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 49.3                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 1.50                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: NULL                                           
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL                         
REMARK 200 SOFTWARE USED: X-PLOR                                                
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 57.35                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.88                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PH 4.75, VAPOR DIFFUSION, HANGING        
REMARK 280  DROP, TEMPERATURE 277.00K                                           
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       68.30000            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       22.20000            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       27.35000            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       22.20000            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       68.30000            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       27.35000            
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: TETRAMERIC                        
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TETRAMERIC                 
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 6460 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 16070 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -39.0 KCAL/MOL                        
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 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   O    LYS B   214     CD1  TRP B   218              1.53            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
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     DC C 303   P      DC C 303   O5'     0.076                       
REMARK 500     DC C 304   C5'    DC C 304   C4'     0.053                       
REMARK 500     DC C 304   O3'    DC C 305   P       0.090                       
REMARK 500     DG C 306   P      DG C 306   O5'     0.064                       
REMARK 500     DG C 306   C5'    DG C 306   C4'     0.061                       
REMARK 500     DG C 306   O3'    DG C 306   C3'    -0.039                       
REMARK 500     DG C 307   C5'    DG C 307   C4'     0.044                       
REMARK 500     DT C 308   C5'    DT C 308   C4'     0.052                       
REMARK 500     DT C 308   O3'    DC C 309   P       0.100                       
REMARK 500     DA C 310   P      DA C 310   O5'     0.063                       
REMARK 500     DA C 310   C5'    DA C 310   C4'     0.046                       
REMARK 500     DC C 311   P      DC C 311   O5'     0.083                       
REMARK 500     DC C 311   C5'    DC C 311   C4'    -0.070                       
REMARK 500     DC C 311   O4'    DC C 311   C4'    -0.075                       
REMARK 500     DT C 313   C5     DT C 313   C7      0.052                       
REMARK 500     DC C 317   C5'    DC C 317   C4'     0.064                       
REMARK 500     DT C 318   N1     DT C 318   C2      0.052                       
REMARK 500     DT C 318   C5     DT C 318   C7      0.060                       
REMARK 500     DA C 319   C5'    DA C 319   C4'     0.066                       
REMARK 500     DC C 320   P      DC C 320   O5'     0.073                       
REMARK 500     DC C 320   C5'    DC C 320   C4'     0.049                       
REMARK 500     DG D 322   C5'    DG D 322   C4'     0.046                       
REMARK 500     DT D 323   O3'    DG D 324   P       0.080                       
REMARK 500     DG D 324   C5'    DG D 324   C4'     0.057                       
REMARK 500     DG D 324   C4'    DG D 324   C3'     0.066                       
REMARK 500     DG D 328   P      DG D 328   O5'     0.076                       
REMARK 500     DG D 328   C5'    DG D 328   C4'     0.055                       
REMARK 500     DC D 330   C5'    DC D 330   C4'     0.061                       
REMARK 500     DA D 331   P      DA D 331   O5'     0.088                       
REMARK 500     DA D 331   C5'    DA D 331   C4'     0.088                       
REMARK 500     DG D 333   C2     DG D 333   N3      0.059                       
REMARK 500     DG D 333   N3     DG D 333   C4      0.044                       
REMARK 500     DA D 336   C8     DA D 336   N9     -0.048                       
REMARK 500     DC D 337   P      DC D 337   O5'     0.064                       
REMARK 500     DC D 337   C5'    DC D 337   C4'     0.062                       
REMARK 500     DC D 338   N3     DC D 338   C4      0.053                       
REMARK 500     DG D 339   C6     DG D 339   N1     -0.048                       
REMARK 500     DT D 342   P      DT D 342   O5'     0.065                       
REMARK 500     DT D 342   C3'    DT D 342   C2'     0.085                       
REMARK 500     DT D 342   C5     DT D 342   C7      0.057                       
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     DC C 301   O4' -  C1' -  N1  ANGL. DEV. =  10.4 DEGREES          
REMARK 500     DA C 302   O4' -  C4' -  C3' ANGL. DEV. =  -8.7 DEGREES          
REMARK 500     DA C 302   C1' -  O4' -  C4' ANGL. DEV. =  -6.5 DEGREES          
REMARK 500     DA C 302   O4' -  C1' -  N9  ANGL. DEV. =   4.3 DEGREES          
REMARK 500     DA C 302   C3' -  O3' -  P   ANGL. DEV. = -14.0 DEGREES          
REMARK 500     DC C 303   O4' -  C4' -  C3' ANGL. DEV. =  -3.0 DEGREES          
REMARK 500     DC C 303   C2  -  N3  -  C4  ANGL. DEV. =   3.1 DEGREES          
REMARK 500     DC C 303   N3  -  C4  -  C5  ANGL. DEV. =  -3.2 DEGREES          
REMARK 500     DC C 303   N3  -  C4  -  N4  ANGL. DEV. =   4.6 DEGREES          
REMARK 500     DC C 303   C3' -  O3' -  P   ANGL. DEV. =   9.6 DEGREES          
REMARK 500     DC C 304   C3' -  O3' -  P   ANGL. DEV. =  12.7 DEGREES          
REMARK 500     DC C 305   O4' -  C4' -  C3' ANGL. DEV. =  -9.1 DEGREES          
REMARK 500     DC C 305   C1' -  O4' -  C4' ANGL. DEV. = -18.4 DEGREES          
REMARK 500     DC C 305   C4' -  C3' -  C2' ANGL. DEV. =  -6.6 DEGREES          
REMARK 500     DC C 305   O4' -  C1' -  C2' ANGL. DEV. =  -5.9 DEGREES          
REMARK 500     DC C 305   N1  -  C2  -  O2  ANGL. DEV. =   5.3 DEGREES          
REMARK 500     DC C 305   N3  -  C2  -  O2  ANGL. DEV. =  -4.5 DEGREES          
REMARK 500     DG C 306   C5' -  C4' -  C3' ANGL. DEV. = -12.4 DEGREES          
REMARK 500     DG C 306   C5' -  C4' -  O4' ANGL. DEV. =  13.4 DEGREES          
REMARK 500     DG C 306   O4' -  C1' -  N9  ANGL. DEV. =   5.0 DEGREES          
REMARK 500     DG C 307   O4' -  C4' -  C3' ANGL. DEV. =  -4.0 DEGREES          
REMARK 500     DG C 307   C5' -  C4' -  O4' ANGL. DEV. =   7.4 DEGREES          
REMARK 500     DG C 307   C3' -  C2' -  C1' ANGL. DEV. =  -5.0 DEGREES          
REMARK 500     DG C 307   O4' -  C1' -  N9  ANGL. DEV. =   2.5 DEGREES          
REMARK 500     DT C 308   O4' -  C1' -  C2' ANGL. DEV. =  -5.4 DEGREES          
REMARK 500     DT C 308   O4' -  C1' -  N1  ANGL. DEV. =   5.9 DEGREES          
REMARK 500     DT C 308   C4  -  C5  -  C6  ANGL. DEV. =   4.5 DEGREES          
REMARK 500     DT C 308   C3' -  O3' -  P   ANGL. DEV. =   7.3 DEGREES          
REMARK 500     DC C 309   N1  -  C1' -  C2' ANGL. DEV. = -12.3 DEGREES          
REMARK 500     DC C 309   O4' -  C1' -  N1  ANGL. DEV. =  17.8 DEGREES          
REMARK 500     DC C 309   N1  -  C2  -  O2  ANGL. DEV. =   5.9 DEGREES          
REMARK 500     DC C 309   N3  -  C2  -  O2  ANGL. DEV. =  -6.2 DEGREES          
REMARK 500     DA C 310   O4' -  C4' -  C3' ANGL. DEV. = -10.5 DEGREES          
REMARK 500     DA C 310   O4' -  C1' -  C2' ANGL. DEV. = -10.7 DEGREES          
REMARK 500     DA C 310   C4  -  C5  -  C6  ANGL. DEV. =   3.1 DEGREES          
REMARK 500     DA C 310   C8  -  N9  -  C4  ANGL. DEV. =  -2.5 DEGREES          
REMARK 500     DC C 311   C5' -  C4' -  O4' ANGL. DEV. = -14.2 DEGREES          
REMARK 500     DC C 311   O4' -  C1' -  C2' ANGL. DEV. =  -7.7 DEGREES          
REMARK 500     DC C 311   O4' -  C1' -  N1  ANGL. DEV. =  -4.8 DEGREES          
REMARK 500     DC C 311   C6  -  N1  -  C2  ANGL. DEV. =   2.4 DEGREES          
REMARK 500     DC C 311   C3' -  O3' -  P   ANGL. DEV. =   7.5 DEGREES          
REMARK 500     DG C 312   O4' -  C1' -  N9  ANGL. DEV. =   5.4 DEGREES          
REMARK 500     DT C 313   P   -  O5' -  C5' ANGL. DEV. = -12.6 DEGREES          
REMARK 500     DT C 313   C1' -  O4' -  C4' ANGL. DEV. =  -7.7 DEGREES          
REMARK 500     DT C 313   O4' -  C1' -  C2' ANGL. DEV. =   5.1 DEGREES          
REMARK 500     DG C 314   C5' -  C4' -  C3' ANGL. DEV. = -10.9 DEGREES          
REMARK 500     DG C 314   C5' -  C4' -  O4' ANGL. DEV. =   9.6 DEGREES          
REMARK 500     DG C 314   O4' -  C1' -  N9  ANGL. DEV. =   4.8 DEGREES          
REMARK 500     DG C 315   O4' -  C4' -  C3' ANGL. DEV. =  -6.8 DEGREES          
REMARK 500     DG C 315   C1' -  O4' -  C4' ANGL. DEV. = -12.2 DEGREES          
REMARK 500                                                                      
REMARK 500 THIS ENTRY HAS     141 ANGLE DEVIATIONS.                             
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    ASP A 197       99.09    -46.24                                   
REMARK 500    LYS A 199      157.05    -43.88                                   
REMARK 500    ARG A 201       86.95    -54.02                                   
REMARK 500    GLN A 203       54.08   -115.45                                   
REMARK 500    HIS A 204     -146.12   -127.96                                   
REMARK 500    ASN A 205      -50.79    -27.91                                   
REMARK 500    ARG A 209       -8.72    -52.50                                   
REMARK 500    ASP A 213      -45.76    -26.53                                   
REMARK 500    VAL A 220      -17.87    -44.59                                   
REMARK 500    GLN A 221      -76.76    -66.76                                   
REMARK 500    PRO A 227      102.93    -42.06                                   
REMARK 500    MET A 231     -147.23     12.73                                   
REMARK 500    SER A 233     -126.26   -170.80                                   
REMARK 500    LYS A 235       90.70     18.29                                   
REMARK 500    SER A 236       63.76    -20.19                                   
REMARK 500    LYS A 240       10.53    -49.23                                   
REMARK 500    SER A 245      -71.51    -51.88                                   
REMARK 500    ALA A 247      -90.97     -2.08                                   
REMARK 500    SER A 248      -59.13    -20.77                                   
REMARK 500    ASP A 249      -78.85    -27.73                                   
REMARK 500    GLU A 253       18.60    -68.89                                   
REMARK 500    GLN A 256      -85.87    -27.32                                   
REMARK 500    SER A 257       -7.61    -56.65                                   
REMARK 500    ASN A 258      -48.01   -150.10                                   
REMARK 500    LYS B 199       -2.83     38.89                                   
REMARK 500    ARG B 200       49.66    -70.19                                   
REMARK 500    ARG B 201      -35.50    174.95                                   
REMARK 500    SER B 223       49.21    -70.05                                   
REMARK 500    LYS B 224      -32.81   -152.90                                   
REMARK 500    PRO B 227      124.99     18.09                                   
REMARK 500    ASP B 228       95.22    -57.33                                   
REMARK 500    SER B 229     -116.65    -77.06                                   
REMARK 500    SER B 230      103.77     96.69                                   
REMARK 500    GLU B 232      127.84     50.26                                   
REMARK 500    THR B 234     -157.21   -142.42                                   
REMARK 500    LYS B 235       -3.24    -52.57                                   
REMARK 500    SER B 239      122.41    163.19                                   
REMARK 500    LYS B 240     -146.83    175.68                                   
REMARK 500    ILE B 243      -26.84    -36.95                                   
REMARK 500    SER B 257      -93.17     -6.07                                   
REMARK 500    ASN B 258      -29.32    -32.67                                   
REMARK 500    HIS B 259       71.13    108.51                                   
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     DC C 301         0.07    SIDE CHAIN                              
REMARK 500     DA C 302         0.07    SIDE CHAIN                              
REMARK 500     DG C 306         0.20    SIDE CHAIN                              
REMARK 500     DG C 307         0.09    SIDE CHAIN                              
REMARK 500     DC C 309         0.14    SIDE CHAIN                              
REMARK 500     DG C 312         0.06    SIDE CHAIN                              
REMARK 500     DT C 313         0.11    SIDE CHAIN                              
REMARK 500     DC C 320         0.09    SIDE CHAIN                              
REMARK 500     DA C 321         0.07    SIDE CHAIN                              
REMARK 500     DG D 322         0.08    SIDE CHAIN                              
REMARK 500     DG D 324         0.06    SIDE CHAIN                              
REMARK 500     DG D 327         0.05    SIDE CHAIN                              
REMARK 500     DC D 330         0.08    SIDE CHAIN                              
REMARK 500     DC D 338         0.12    SIDE CHAIN                              
REMARK 500     DG D 341         0.09    SIDE CHAIN                              
REMARK 500    TYR B 250         0.07    SIDE CHAIN                              
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
DBREF  1AN4 A  196   260  UNP    P22415   USF1_HUMAN     196    260             
DBREF  1AN4 B  196   260  UNP    P22415   USF1_HUMAN     196    260             
DBREF  1AN4 C  301   321  PDB    1AN4     1AN4           301    321             
DBREF  1AN4 D  322   342  PDB    1AN4     1AN4           322    342             
SEQADV 1AN4 MET A  196  UNP  P22415    ARG   196 CLONING ARTIFACT               
SEQADV 1AN4 SER A  229  UNP  P22415    CYS   229 ENGINEERED MUTATION            
SEQADV 1AN4 SER A  248  UNP  P22415    CYS   248 ENGINEERED MUTATION            
SEQADV 1AN4 MET B  196  UNP  P22415    ARG   196 CLONING ARTIFACT               
SEQADV 1AN4 SER B  229  UNP  P22415    CYS   229 ENGINEERED MUTATION            
SEQADV 1AN4 SER B  248  UNP  P22415    CYS   248 ENGINEERED MUTATION            
SEQRES   1 C   21   DC  DA  DC  DC  DC  DG  DG  DT  DC  DA  DC  DG  DT          
SEQRES   2 C   21   DG  DG  DC  DC  DT  DA  DC  DA                              
SEQRES   1 D   21   DG  DT  DG  DT  DA  DG  DG  DC  DC  DA  DC  DG  DT          
SEQRES   2 D   21   DG  DA  DC  DC  DG  DG  DG  DT                              
SEQRES   1 A   65  MET ASP GLU LYS ARG ARG ALA GLN HIS ASN GLU VAL GLU          
SEQRES   2 A   65  ARG ARG ARG ARG ASP LYS ILE ASN ASN TRP ILE VAL GLN          
SEQRES   3 A   65  LEU SER LYS ILE ILE PRO ASP SER SER MET GLU SER THR          
SEQRES   4 A   65  LYS SER GLY GLN SER LYS GLY GLY ILE LEU SER LYS ALA          
SEQRES   5 A   65  SER ASP TYR ILE GLN GLU LEU ARG GLN SER ASN HIS ARG          
SEQRES   1 B   65  MET ASP GLU LYS ARG ARG ALA GLN HIS ASN GLU VAL GLU          
SEQRES   2 B   65  ARG ARG ARG ARG ASP LYS ILE ASN ASN TRP ILE VAL GLN          
SEQRES   3 B   65  LEU SER LYS ILE ILE PRO ASP SER SER MET GLU SER THR          
SEQRES   4 B   65  LYS SER GLY GLN SER LYS GLY GLY ILE LEU SER LYS ALA          
SEQRES   5 B   65  SER ASP TYR ILE GLN GLU LEU ARG GLN SER ASN HIS ARG          
HELIX    1   1 ASN A  205  ILE A  225  1                                  21    
HELIX    2   2 ALA A  247  ARG A  255  5                                   9    
HELIX    3   3 ALA B  202  LYS B  214  1                                  13    
HELIX    4   4 ASN B  217  LEU B  222  1                                   6    
HELIX    5   5 GLY B  241  SER B  245  5                                   5    
CRYST1  136.600   54.700   44.400  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      0.007321  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.018282  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.022523        0.00000