PDB Short entry for 3M19
HEADER    IMMUNE SYSTEM                           04-MAR-10   3M19              
TITLE     CRYSTAL STRUCTURE OF VARIABLE LYMPHOCYTE RECEPTOR VLRA.R5.1           
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: VARIABLE LYMPHOCYTE RECEPTOR A DIVERSITY REGION;           
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 FRAGMENT: ECTODOMAIN;                                                
COMPND   5 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: PETROMYZON MARINUS;                             
SOURCE   3 ORGANISM_COMMON: MARINE LAMPREY;                                     
SOURCE   4 ORGANISM_TAXID: 7757;                                                
SOURCE   5 GENE: VLRA;                                                          
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   8 EXPRESSION_SYSTEM_STRAIN: BL21 CODONPLUS(DE3);                       
SOURCE   9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  10 EXPRESSION_SYSTEM_VECTOR: PT7-7                                      
KEYWDS    VARIABLE LYMPHOCYTE RECEPTOR, ADAPTIVE IMMUNITY, ANTIBODY, T CELL, B  
KEYWDS   2 CELL, LEUCINE-RICH REPEAT, IMMUNE SYSTEM                             
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    L.DENG,C.A.VELIKOVSKY,R.A.MARIUZZA                                    
REVDAT   4   06-SEP-23 3M19    1       SEQADV                                   
REVDAT   3   11-AUG-10 3M19    1       JRNL                                     
REVDAT   2   28-JUL-10 3M19    1       JRNL                                     
REVDAT   1   30-JUN-10 3M19    0                                                
JRNL        AUTH   L.DENG,C.A.VELIKOVSKY,G.XU,L.M.IYER,S.TASUMI,M.C.KERZIC,     
JRNL        AUTH 2 M.F.FLAJNIK,L.ARAVIND,Z.PANCER,R.A.MARIUZZA                  
JRNL        TITL   A STRUCTURAL BASIS FOR ANTIGEN RECOGNITION BY THE T          
JRNL        TITL 2 CELL-LIKE LYMPHOCYTES OF SEA LAMPREY.                        
JRNL        REF    PROC.NATL.ACAD.SCI.USA        V. 107 13408 2010              
JRNL        REFN                   ISSN 0027-8424                               
JRNL        PMID   20616002                                                     
JRNL        DOI    10.1073/PNAS.1005475107                                      
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.70 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.2.0019                                      
REMARK   3   AUTHORS     : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER,              
REMARK   3               : NICHOLLS,WINN,LONG,VAGIN                             
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : MAXIMUM LIKELIHOOD                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.70                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 50.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   COMPLETENESS FOR RANGE        (%) : 99.8                           
REMARK   3   NUMBER OF REFLECTIONS             : 48278                          
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 + TEST SET) : 0.212                           
REMARK   3   R VALUE            (WORKING SET) : 0.209                           
REMARK   3   FREE R VALUE                     : 0.255                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 2561                            
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 20                           
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 1.70                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.74                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 3597                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 100.0                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2550                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 189                          
REMARK   3   BIN FREE R VALUE                    : 0.3310                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 3632                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 0                                       
REMARK   3   SOLVENT ATOMS            : 328                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 16.90                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 25.21                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -1.31000                                             
REMARK   3    B22 (A**2) : 2.23000                                              
REMARK   3    B33 (A**2) : -1.41000                                             
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : -0.65000                                             
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): 0.127         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.127         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.086         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 2.523         
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.949                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.928                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  3705 ; 0.017 ; 0.022       
REMARK   3   BOND LENGTHS OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  5026 ; 1.626 ; 1.983       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   474 ; 6.116 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):   163 ;37.583 ;26.196       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   670 ;14.205 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):    15 ;14.721 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   600 ; 0.108 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  2723 ; 0.008 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):  1680 ; 0.222 ; 0.200       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  2503 ; 0.314 ; 0.200       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):   285 ; 0.145 ; 0.200       
REMARK   3   H-BOND (X...Y) OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW REFINED ATOMS        (A):    69 ; 0.213 ; 0.200       
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):    21 ; 0.151 ; 0.200       
REMARK   3   SYMMETRY H-BOND OTHERS            (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.     COUNT   RMS    WEIGHT      
REMARK   3   MAIN-CHAIN BOND REFINED ATOMS  (A**2):  2408 ; 1.135 ; 1.500       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  3785 ; 1.787 ; 2.000       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):  1431 ; 3.045 ; 3.000       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):  1239 ; 4.775 ; 4.500       
REMARK   3   SIDE-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B REFINED ATOMS     (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B OTHER ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3 ANISOTROPIC THERMAL FACTOR RESTRAINTS.    COUNT   RMS   WEIGHT       
REMARK   3   RIGID-BOND RESTRAINTS          (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; FREE ATOMS         (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; BONDED ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS STATISTICS                                           
REMARK   3   NUMBER OF DIFFERENT NCS GROUPS : NULL                              
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : NULL                                       
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED : MASK                                                 
REMARK   3   PARAMETERS FOR MASK CALCULATION                                    
REMARK   3   VDW PROBE RADIUS   : 1.20                                          
REMARK   3   ION PROBE RADIUS   : 0.80                                          
REMARK   3   SHRINKAGE RADIUS   : 0.80                                          
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 3M19 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 05-MAR-10.                  
REMARK 100 THE DEPOSITION ID IS D_1000057980.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 01-NOV-09                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 4.0                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : APS                                
REMARK 200  BEAMLINE                       : 22-ID                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.0                                
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : MARMOSAIC 300 MM CCD               
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : HKL-2000                           
REMARK 200  DATA SCALING SOFTWARE          : HKL-2000                           
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 48278                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.700                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 50.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : NULL                               
REMARK 200  DATA REDUNDANCY                : 3.700                              
REMARK 200  R MERGE                    (I) : 0.10100                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 12.9000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.70                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.82                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : NULL                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 2.90                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.32200                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 2.500                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: PHASER                                                
REMARK 200 STARTING MODEL: PDB ENTRY 3M18                                       
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 42.76                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.15                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 20% (W/V) POLYETHYLENE GLYCOL 6000,      
REMARK 280  1.0 M LICL AND 0.1 M CITRIC ACID, PH 4.0, VAPOR DIFFUSION,          
REMARK 280  HANGING DROP, TEMPERATURE 293K                                      
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       38.52650            
REMARK 290   SMTRY3   2  0.000000  0.000000 -1.000000        0.00000            
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: MONOMERIC                         
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC                  
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A                                     
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 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC                         
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC                  
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 APPLY THE FOLLOWING TO CHAINS: 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     0                                                      
REMARK 465     LYS A     1                                                      
REMARK 465     THR A     2                                                      
REMARK 465     GLY A   214                                                      
REMARK 465     THR A   215                                                      
REMARK 465     GLY A   216                                                      
REMARK 465     GLN A   217                                                      
REMARK 465     ASN A   218                                                      
REMARK 465     LEU A   219                                                      
REMARK 465     HIS A   220                                                      
REMARK 465     PRO A   247                                                      
REMARK 465     PHE A   248                                                      
REMARK 465     VAL A   249                                                      
REMARK 465     GLU A   250                                                      
REMARK 465     MET B     0                                                      
REMARK 465     LYS B     1                                                      
REMARK 465     THR B     2                                                      
REMARK 465     GLY B   214                                                      
REMARK 465     THR B   215                                                      
REMARK 465     GLY B   216                                                      
REMARK 465     GLN B   217                                                      
REMARK 465     ASN B   218                                                      
REMARK 465     LEU B   219                                                      
REMARK 465     HIS B   220                                                      
REMARK 465     PRO B   247                                                      
REMARK 465     PHE B   248                                                      
REMARK 465     VAL B   249                                                      
REMARK 465     GLU B   250                                                      
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    GLY A   225     O    HOH A   272              2.16            
REMARK 500   CE   LYS A    59     O    HOH A   302              2.18            
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    LYS A  59   CD  -  CE  -  NZ  ANGL. DEV. =  14.8 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    ASN A  68     -161.98   -110.32                                   
REMARK 500    LEU A  81       50.26    -91.69                                   
REMARK 500    ASN A  92     -155.47   -110.02                                   
REMARK 500    LEU A 105       58.02    -95.66                                   
REMARK 500    ASN A 116     -158.51   -117.87                                   
REMARK 500    ASN A 140     -154.61   -120.27                                   
REMARK 500    ASN A 164     -162.90   -126.07                                   
REMARK 500    SER A 222       59.12   -158.35                                   
REMARK 500    TYR A 244       19.72     57.16                                   
REMARK 500    ASN B  68     -164.02   -108.98                                   
REMARK 500    LEU B  81       56.95    -96.04                                   
REMARK 500    ASN B  92     -160.57   -108.45                                   
REMARK 500    LEU B 105       54.29    -92.22                                   
REMARK 500    ASN B 116     -157.51   -112.47                                   
REMARK 500    ASN B 140     -157.48   -128.04                                   
REMARK 500    SER B 222       58.14   -159.57                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 3M18   RELATED DB: PDB                                   
DBREF  3M19 A    1   250  UNP    C7B6Z3   C7B6Z3_PETMA     1    250             
DBREF  3M19 B    1   250  UNP    C7B6Z3   C7B6Z3_PETMA     1    250             
SEQADV 3M19 MET A    0  UNP  C7B6Z3              INITIATING METHIONINE          
SEQADV 3M19 MET B    0  UNP  C7B6Z3              INITIATING METHIONINE          
SEQRES   1 A  251  MET LYS THR CYS GLU THR VAL THR GLY CYS THR CYS ASN          
SEQRES   2 A  251  GLU GLY LYS LYS GLU VAL ASP CYS GLN GLY LYS SER LEU          
SEQRES   3 A  251  ASP SER VAL PRO SER GLY ILE PRO ALA ASP THR GLU LYS          
SEQRES   4 A  251  LEU ASP LEU GLN SER THR GLY LEU ALA THR LEU SER ASP          
SEQRES   5 A  251  ALA THR PHE ARG GLY LEU THR LYS LEU THR TRP LEU ASN          
SEQRES   6 A  251  LEU ASP TYR ASN GLN LEU GLN THR LEU SER ALA GLY VAL          
SEQRES   7 A  251  PHE ASP ASP LEU THR GLU LEU GLY THR LEU GLY LEU ALA          
SEQRES   8 A  251  ASN ASN GLN LEU ALA SER LEU PRO LEU GLY VAL PHE ASP          
SEQRES   9 A  251  HIS LEU THR GLN LEU ASP LYS LEU TYR LEU GLY GLY ASN          
SEQRES  10 A  251  GLN LEU LYS SER LEU PRO SER GLY VAL PHE ASP ARG LEU          
SEQRES  11 A  251  THR LYS LEU LYS GLU LEU ARG LEU ASN THR ASN GLN LEU          
SEQRES  12 A  251  GLN SER ILE PRO ALA GLY ALA PHE ASP LYS LEU THR ASN          
SEQRES  13 A  251  LEU GLN THR LEU SER LEU SER THR ASN GLN LEU GLN SER          
SEQRES  14 A  251  VAL PRO HIS GLY ALA PHE ASP ARG LEU GLY LYS LEU GLN          
SEQRES  15 A  251  THR ILE THR LEU PHE GLY ASN GLN PHE ASP CYS SER ARG          
SEQRES  16 A  251  CYS GLU ILE LEU TYR LEU SER GLN TRP ILE ARG GLU ASN          
SEQRES  17 A  251  SER ASN LYS VAL LYS ASP GLY THR GLY GLN ASN LEU HIS          
SEQRES  18 A  251  GLU SER PRO ASP GLY VAL THR CYS SER ASP GLY LYS VAL          
SEQRES  19 A  251  VAL ARG THR VAL THR ASN GLU THR LEU LYS TYR GLU CYS          
SEQRES  20 A  251  PRO PHE VAL GLU                                              
SEQRES   1 B  251  MET LYS THR CYS GLU THR VAL THR GLY CYS THR CYS ASN          
SEQRES   2 B  251  GLU GLY LYS LYS GLU VAL ASP CYS GLN GLY LYS SER LEU          
SEQRES   3 B  251  ASP SER VAL PRO SER GLY ILE PRO ALA ASP THR GLU LYS          
SEQRES   4 B  251  LEU ASP LEU GLN SER THR GLY LEU ALA THR LEU SER ASP          
SEQRES   5 B  251  ALA THR PHE ARG GLY LEU THR LYS LEU THR TRP LEU ASN          
SEQRES   6 B  251  LEU ASP TYR ASN GLN LEU GLN THR LEU SER ALA GLY VAL          
SEQRES   7 B  251  PHE ASP ASP LEU THR GLU LEU GLY THR LEU GLY LEU ALA          
SEQRES   8 B  251  ASN ASN GLN LEU ALA SER LEU PRO LEU GLY VAL PHE ASP          
SEQRES   9 B  251  HIS LEU THR GLN LEU ASP LYS LEU TYR LEU GLY GLY ASN          
SEQRES  10 B  251  GLN LEU LYS SER LEU PRO SER GLY VAL PHE ASP ARG LEU          
SEQRES  11 B  251  THR LYS LEU LYS GLU LEU ARG LEU ASN THR ASN GLN LEU          
SEQRES  12 B  251  GLN SER ILE PRO ALA GLY ALA PHE ASP LYS LEU THR ASN          
SEQRES  13 B  251  LEU GLN THR LEU SER LEU SER THR ASN GLN LEU GLN SER          
SEQRES  14 B  251  VAL PRO HIS GLY ALA PHE ASP ARG LEU GLY LYS LEU GLN          
SEQRES  15 B  251  THR ILE THR LEU PHE GLY ASN GLN PHE ASP CYS SER ARG          
SEQRES  16 B  251  CYS GLU ILE LEU TYR LEU SER GLN TRP ILE ARG GLU ASN          
SEQRES  17 B  251  SER ASN LYS VAL LYS ASP GLY THR GLY GLN ASN LEU HIS          
SEQRES  18 B  251  GLU SER PRO ASP GLY VAL THR CYS SER ASP GLY LYS VAL          
SEQRES  19 B  251  VAL ARG THR VAL THR ASN GLU THR LEU LYS TYR GLU CYS          
SEQRES  20 B  251  PRO PHE VAL GLU                                              
FORMUL   3  HOH   *328(H2 O)                                                    
HELIX    1   1 CYS A    3  GLY A    8  1                                   6    
HELIX    2   2 GLU A   13  LYS A   15  5                                   3    
HELIX    3   3 GLU A  196  ASN A  207  1                                  12    
HELIX    4   4 SER A  208  VAL A  211  5                                   4    
HELIX    5   5 SER A  222  VAL A  226  5                                   5    
HELIX    6   6 VAL A  233  VAL A  237  5                                   5    
HELIX    7   7 CYS B    3  GLY B    8  1                                   6    
HELIX    8   8 GLU B  196  ASN B  207  1                                  12    
HELIX    9   9 SER B  208  VAL B  211  5                                   4    
HELIX   10  10 SER B  222  VAL B  226  5                                   5    
HELIX   11  11 VAL B  233  VAL B  237  5                                   5    
SHEET    1   A 9 THR A  10  ASN A  12  0                                        
SHEET    2   A 9 GLU A  17  ASP A  19 -1  O  ASP A  19   N  THR A  10           
SHEET    3   A 9 LYS A  38  ASP A  40  1  O  ASP A  40   N  VAL A  18           
SHEET    4   A 9 TRP A  62  ASN A  64  1  O  TRP A  62   N  LEU A  39           
SHEET    5   A 9 THR A  86  GLY A  88  1  O  GLY A  88   N  LEU A  63           
SHEET    6   A 9 LYS A 110  TYR A 112  1  O  TYR A 112   N  LEU A  87           
SHEET    7   A 9 GLU A 134  ARG A 136  1  O  ARG A 136   N  LEU A 111           
SHEET    8   A 9 THR A 158  SER A 160  1  O  THR A 158   N  LEU A 135           
SHEET    9   A 9 THR A 182  THR A 184  1  O  THR A 182   N  LEU A 159           
SHEET    1   B 9 THR B  10  ASN B  12  0                                        
SHEET    2   B 9 GLU B  17  ASP B  19 -1  O  ASP B  19   N  THR B  10           
SHEET    3   B 9 LYS B  38  ASP B  40  1  O  LYS B  38   N  VAL B  18           
SHEET    4   B 9 TRP B  62  ASN B  64  1  O  TRP B  62   N  LEU B  39           
SHEET    5   B 9 THR B  86  GLY B  88  1  O  GLY B  88   N  LEU B  63           
SHEET    6   B 9 LYS B 110  TYR B 112  1  O  TYR B 112   N  LEU B  87           
SHEET    7   B 9 GLU B 134  ARG B 136  1  O  GLU B 134   N  LEU B 111           
SHEET    8   B 9 THR B 158  SER B 160  1  O  THR B 158   N  LEU B 135           
SHEET    9   B 9 THR B 182  THR B 184  1  O  THR B 182   N  LEU B 159           
SSBOND   1 CYS A    3    CYS A   11                          1555   1555  2.03  
SSBOND   2 CYS A    9    CYS A   20                          1555   1555  2.05  
SSBOND   3 CYS A  192    CYS A  228                          1555   1555  1.99  
SSBOND   4 CYS A  195    CYS A  246                          1555   1555  2.03  
SSBOND   5 CYS B    3    CYS B   11                          1555   1555  2.06  
SSBOND   6 CYS B    9    CYS B   20                          1555   1555  2.04  
SSBOND   7 CYS B  192    CYS B  228                          1555   1555  2.02  
SSBOND   8 CYS B  195    CYS B  246                          1555   1555  2.05  
CRYST1   50.333   77.053   65.392  90.00 112.04  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      0.019868  0.000000  0.008043        0.00000                         
SCALE2      0.000000  0.012978  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.016498        0.00000