HEADER    PROTEIN BINDING/PEPTIDE                 28-MAY-10   3N8M              
TITLE     CRYSTAL STRUCTURE OF THE GRB2 SH2 DOMAIN IN COMPLEX WITH AN ACYCLIC   
TITLE    2 LIGAND HAVING THE SEQUENCE PYVNVP                                    
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: GROWTH FACTOR RECEPTOR-BOUND PROTEIN 2;                    
COMPND   3 CHAIN: A;                                                            
COMPND   4 FRAGMENT: GRB2 SH2 DOMAIN, RESIDUES 55-153;                          
COMPND   5 SYNONYM: ADAPTER PROTEIN GRB2, SH2/SH3 ADAPTER GRB2, PROTEIN ASH;    
COMPND   6 ENGINEERED: YES;                                                     
COMPND   7 MOL_ID: 2;                                                           
COMPND   8 MOLECULE: PEPTIDE;                                                   
COMPND   9 CHAIN: B;                                                            
COMPND  10 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: GRB2, ASH;                                                     
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   8 EXPRESSION_SYSTEM_STRAIN: SG13009;                                   
SOURCE   9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  10 EXPRESSION_SYSTEM_PLASMID: PQE-60;                                   
SOURCE  11 MOL_ID: 2;                                                           
SOURCE  12 SYNTHETIC: YES                                                       
KEYWDS    GRB2 SH2 DOMAIN, LIGAND PREORGANIZATION, MACROCYCLES, MACROCYCLIC     
KEYWDS   2 LIGANDS, PROTEIN BINDING-PEPTIDE COMPLEX                             
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    B.B.WHIDDON,J.H.CLEMENTS,S.F.MARTIN                                   
REVDAT   3   22-NOV-23 3N8M    1       REMARK                                   
REVDAT   2   06-SEP-23 3N8M    1       REMARK SEQADV LINK                       
REVDAT   1   15-DEC-10 3N8M    0                                                
JRNL        AUTH   J.E.DELORBE,J.H.CLEMENTS,B.B.WHIDDON,S.F.MARTIN              
JRNL        TITL   THERMODYNAMIC AND STRUCTURAL EFFECTS OF MACROCYCLIZATION AS  
JRNL        TITL 2 A CONSTRAINING METHOD IN PROTEIN-LIGAND INTERACTIONS.        
JRNL        REF    ACS MED.CHEM.LETT.            V.   1   448 2010              
JRNL        REFN                   ISSN 1948-5875                               
JRNL        PMID   21116482                                                     
JRNL        DOI    10.1021/ML100142Y                                            
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.00 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) : 2.00                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 34.82                          
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)   (%) : 99.8                           
REMARK   3   NUMBER OF REFLECTIONS             : 7636                           
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) : 0.187                           
REMARK   3   FREE R VALUE                     : 0.224                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : NULL                            
REMARK   3   FREE R VALUE TEST SET COUNT      : 385                             
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            : 872                                     
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 6                                       
REMARK   3   SOLVENT ATOMS            : 107                                     
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) : -0.52000                                             
REMARK   3    B22 (A**2) : -0.52000                                             
REMARK   3    B33 (A**2) : 1.04000                                              
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
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) : NULL                            
REMARK   3   BOND ANGLES            (DEGREES) : NULL                            
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  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 3N8M COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 04-JUN-10.                  
REMARK 100 THE DEPOSITION ID IS D_1000059517.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 27-JUL-07                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 8.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
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 RU200                       
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.5418                             
REMARK 200  MONOCHROMATOR                  : BLUE MAX-FLUX CONFOCAL             
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : MAR SCANNER 345 MM PLATE           
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : HKL-2000                           
REMARK 200  DATA SCALING SOFTWARE          : HKL-2000                           
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 9451                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.860                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 34.820                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.6                               
REMARK 200  DATA REDUNDANCY                : 22.10                              
REMARK 200  R MERGE                    (I) : 0.06600                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 60.6000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.86                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.93                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 97.0                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 19.50                              
REMARK 200  R MERGE FOR SHELL          (I) : 0.15200                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 21.10                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: MOLREP                                                
REMARK 200 STARTING MODEL: 2HUW                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 31.48                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.80                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: LIGAND IN LYOPHILIZED POWDER FORM WAS    
REMARK 280  DISSOLVED IN A 7.2 MG/ML SOLUTION OF GRB2 SH2 IN WATER SUCH TO      
REMARK 280  GIVE A PROTEIN/LIGAND MOLAR RATIO OF 1:1.7. 4 UL OF THIS            
REMARK 280  SOLUTION WAS MIXED WITH 3 UL OF 12% V/V GLYCEROL, 1.5 M AMMONIUM    
REMARK 280  SULFATE, 0.1 M TRIS, PH 8.5 TO CREATE THE HANGING DROP, WHICH       
REMARK 280  YIELDED CRYSTALS OF THE PROTEIN-LIGAND COMPLEX AFTER 8 WEEKS,       
REMARK 280  VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 298K                     
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 41 21 2                        
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,-Y,Z+1/2                                             
REMARK 290       3555   -Y+1/2,X+1/2,Z+1/4                                      
REMARK 290       4555   Y+1/2,-X+1/2,Z+3/4                                      
REMARK 290       5555   -X+1/2,Y+1/2,-Z+1/4                                     
REMARK 290       6555   X+1/2,-Y+1/2,-Z+3/4                                     
REMARK 290       7555   Y,X,-Z                                                  
REMARK 290       8555   -Y,-X,-Z+1/2                                            
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        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       43.06400            
REMARK 290   SMTRY1   3  0.000000 -1.000000  0.000000       24.62000            
REMARK 290   SMTRY2   3  1.000000  0.000000  0.000000       24.62000            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000       21.53200            
REMARK 290   SMTRY1   4  0.000000  1.000000  0.000000       24.62000            
REMARK 290   SMTRY2   4 -1.000000  0.000000  0.000000       24.62000            
REMARK 290   SMTRY3   4  0.000000  0.000000  1.000000       64.59600            
REMARK 290   SMTRY1   5 -1.000000  0.000000  0.000000       24.62000            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       24.62000            
REMARK 290   SMTRY3   5  0.000000  0.000000 -1.000000       21.53200            
REMARK 290   SMTRY1   6  1.000000  0.000000  0.000000       24.62000            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       24.62000            
REMARK 290   SMTRY3   6  0.000000  0.000000 -1.000000       64.59600            
REMARK 290   SMTRY1   7  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   7  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   7  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   8  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   8 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   8  0.000000  0.000000 -1.000000       43.06400            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1, 2                                                    
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: DIMERIC                           
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 920 ANGSTROM**2                           
REMARK 350 SURFACE AREA OF THE COMPLEX: 6330 ANGSTROM**2                        
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -7.0 KCAL/MOL                         
REMARK 350 APPLY THE FOLLOWING TO CHAINS: 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 350                                                                      
REMARK 350 BIOMOLECULE: 2                                                       
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TETRAMERIC                 
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 4160 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 10340 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -30.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: 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 350   BIOMT1   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 350   BIOMT2   2 -1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT3   2  0.000000  0.000000 -1.000000       43.06400            
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     ILE A    53                                                      
REMARK 465     GLU A    54                                                      
REMARK 465     VAL A   154                                                      
REMARK 465     PRO A   155                                                      
REMARK 465     GLN A   156                                                      
REMARK 465     GLN A   157                                                      
REMARK 465     PRO A   158                                                      
REMARK 465     THR A   159                                                      
REMARK 465     TYR A   160                                                      
REMARK 465     VAL A   161                                                      
REMARK 465     GLN A   162                                                      
REMARK 465     ALA A   163                                                      
REMARK 465     HIS A   164                                                      
REMARK 465     HIS A   165                                                      
REMARK 465     HIS A   166                                                      
REMARK 465     HIS A   167                                                      
REMARK 465     HIS A   168                                                      
REMARK 465     HIS A   169                                                      
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    HOH A    20     O    HOH A   198              2.03            
REMARK 500   O    HOH A   174     O    HOH A   182              2.07            
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   209     O    HOH A   209     7555     1.12            
REMARK 500   O    HOH A   195     O    HOH A   195     8555     1.36            
REMARK 500   O    HOH A   183     O    HOH A   183     7555     1.42            
REMARK 500   O    HOH A   189     O    HOH A   189     7555     1.90            
REMARK 500   O    HOH A   196     O    HOH A   196     7555     1.91            
REMARK 500   O    HOH A   175     O    HOH A   191     8555     2.08            
REMARK 500   O    HOH A   213     O    HOH A   213     8555     2.15            
REMARK 500   O    HOH A     7     O    HOH A   222     5545     2.16            
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    TRP A 121      -76.24   -132.64                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE GOL B 9                   
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR CHAIN B OF PEPTIDE                
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1BMB   RELATED DB: PDB                                   
REMARK 900 GRB2-SH2 DOMAIN IN COMPLEX WITH KPFY*VNVEF (PKF270-974)              
REMARK 900 RELATED ID: 1JYR   RELATED DB: PDB                                   
REMARK 900 XRAY STRUCTURE OF GRB2 SH2 DOMAIN COMPLEXED WITH A PHOSPHORYLATED    
REMARK 900 PEPTIDE                                                              
REMARK 900 RELATED ID: 1TZE   RELATED DB: PDB                                   
REMARK 900 SIGNAL TRANSDUCTION ADAPTOR GROWTH FACTOR, GRB2 SH2 DOMAIN           
REMARK 900 COMPLEXED WITH PHOSPHOTYROSYL HEPTAPEPTIDE LYS-PRO-PHE-PTYR-VAL-ASN- 
REMARK 900 VAL-NH2 (KFPPYVNC-NH2)                                               
DBREF  3N8M A   53   163  UNP    P62993   GRB2_HUMAN      53    163             
DBREF  3N8M B    1     6  PDB    3N8M     3N8M             1      6             
SEQADV 3N8M HIS A  164  UNP  P62993              EXPRESSION TAG                 
SEQADV 3N8M HIS A  165  UNP  P62993              EXPRESSION TAG                 
SEQADV 3N8M HIS A  166  UNP  P62993              EXPRESSION TAG                 
SEQADV 3N8M HIS A  167  UNP  P62993              EXPRESSION TAG                 
SEQADV 3N8M HIS A  168  UNP  P62993              EXPRESSION TAG                 
SEQADV 3N8M HIS A  169  UNP  P62993              EXPRESSION TAG                 
SEQRES   1 A  117  ILE GLU MET LYS PRO HIS PRO TRP PHE PHE GLY LYS ILE          
SEQRES   2 A  117  PRO ARG ALA LYS ALA GLU GLU MET LEU SER LYS GLN ARG          
SEQRES   3 A  117  HIS ASP GLY ALA PHE LEU ILE ARG GLU SER GLU SER ALA          
SEQRES   4 A  117  PRO GLY ASP PHE SER LEU SER VAL LYS PHE GLY ASN ASP          
SEQRES   5 A  117  VAL GLN HIS PHE LYS VAL LEU ARG ASP GLY ALA GLY LYS          
SEQRES   6 A  117  TYR PHE LEU TRP VAL VAL LYS PHE ASN SER LEU ASN GLU          
SEQRES   7 A  117  LEU VAL ASP TYR HIS ARG SER THR SER VAL SER ARG ASN          
SEQRES   8 A  117  GLN GLN ILE PHE LEU ARG ASP ILE GLU GLN VAL PRO GLN          
SEQRES   9 A  117  GLN PRO THR TYR VAL GLN ALA HIS HIS HIS HIS HIS HIS          
SEQRES   1 B    6  6NA PTR VAL ASN VAL 9PR                                      
MODRES 3N8M PTR B    2  TYR  O-PHOSPHOTYROSINE                                  
HET    6NA  B   1       7                                                       
HET    PTR  B   2      16                                                       
HET    9PR  B   6       9                                                       
HET    GOL  B   9       6                                                       
HETNAM     6NA HEXANOIC ACID                                                    
HETNAM     PTR O-PHOSPHOTYROSINE                                                
HETNAM     9PR N-METHYL-L-PROLINAMIDE                                           
HETNAM     GOL GLYCEROL                                                         
HETSYN     PTR PHOSPHONOTYROSINE                                                
HETSYN     GOL GLYCERIN; PROPANE-1,2,3-TRIOL                                    
FORMUL   2  6NA    C6 H12 O2                                                    
FORMUL   2  PTR    C9 H12 N O6 P                                                
FORMUL   2  9PR    C6 H12 N2 O                                                  
FORMUL   3  GOL    C3 H8 O3                                                     
FORMUL   4  HOH   *107(H2 O)                                                    
HELIX    1   1 PRO A   66  SER A   75  1                                  10    
HELIX    2   2 SER A  127  HIS A  135  1                                   9    
SHEET    1   A 5 PHE A  83  GLU A  87  0                                        
SHEET    2   A 5 PHE A  95  PHE A 101 -1  O  SER A  96   N  ARG A  86           
SHEET    3   A 5 ASP A 104  ARG A 112 -1  O  PHE A 108   N  LEU A  97           
SHEET    4   A 5 TYR A 118  PHE A 119 -1  O  PHE A 119   N  LEU A 111           
SHEET    5   A 5 LYS A 124  PHE A 125 -1  O  PHE A 125   N  TYR A 118           
LINK         C   6NA B   1                 N   PTR B   2     1555   1555  1.33  
LINK         C   PTR B   2                 N   VAL B   3     1555   1555  1.33  
LINK         C   VAL B   5                 N   9PR B   6     1555   1555  1.33  
CISPEP   1 VAL B    5    9PR B    6          0        -0.05                     
SITE     1 AC1  7 HOH A   4  LEU A 111  PHE A 119  PHE A 147                    
SITE     2 AC1  7 HOH A 207  HOH A 211  9PR B   6                               
SITE     1 AC2 18 HOH A   3  HOH A  33  ARG A  67  ARG A  86                    
SITE     2 AC2 18 SER A  88  SER A  90  SER A  96  ASN A 103                    
SITE     3 AC2 18 HIS A 107  PHE A 108  LYS A 109  LEU A 120                    
SITE     4 AC2 18 TRP A 121  SER A 137  GOL B   9  HOH B  10                    
SITE     5 AC2 18 HOH B  30  HOH B 106                                          
CRYST1   49.240   49.240   86.128  90.00  90.00  90.00 P 41 21 2     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      0.020309  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.020309  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.011611        0.00000