PDB Short entry for 2QSQ
HEADER    CELL ADHESION                           31-JUL-07   2QSQ              
TITLE     CRYSTAL STRUCTURE OF THE N-TERMINAL DOMAIN OF CARCINOEMBRYONIC ANTIGEN
TITLE    2 (CEA)                                                                
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: CARCINOEMBRYONIC ANTIGEN-RELATED CELL ADHESION MOLECULE 5; 
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 FRAGMENT: N-TERMINAL DOMAIN OF CEA (UNP RESIDUES 34-110);            
COMPND   5 SYNONYM: CARCINOEMBRYONIC ANTIGEN, CEA, MECONIUM ANTIGEN 100, CD66E  
COMPND   6 ANTIGEN;                                                             
COMPND   7 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: CEACAM5, CEA;                                                  
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3);                       
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 469008;                                     
SOURCE   8 EXPRESSION_SYSTEM_STRAIN: BL21(DE3);                                 
SOURCE   9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  10 EXPRESSION_SYSTEM_PLASMID: PET-21D                                   
KEYWDS    CELL ADHESION, GLYCOPROTEIN, GPI-ANCHOR, IMMUNOGLOBULIN DOMAIN,       
KEYWDS   2 LIPOPROTEIN, MEMBRANE                                                
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    I.LE TRONG,N.KOROTKOVA,S.L.MOSELEY,R.E.STENKAMP                       
REVDAT   6   21-FEB-24 2QSQ    1       REMARK                                   
REVDAT   5   25-OCT-17 2QSQ    1       REMARK                                   
REVDAT   4   13-JUL-11 2QSQ    1       VERSN                                    
REVDAT   3   24-FEB-09 2QSQ    1       VERSN                                    
REVDAT   2   29-JAN-08 2QSQ    1       JRNL                                     
REVDAT   1   01-JAN-08 2QSQ    0                                                
JRNL        AUTH   N.KOROTKOVA,Y.YANG,I.LE TRONG,E.COTA,B.DEMELER,J.MARCHANT,   
JRNL        AUTH 2 W.E.THOMAS,R.E.STENKAMP,S.L.MOSELEY,S.MATTHEWS               
JRNL        TITL   BINDING OF DR ADHESINS OF ESCHERICHIA COLI TO                
JRNL        TITL 2 CARCINOEMBRYONIC ANTIGEN TRIGGERS RECEPTOR DISSOCIATION.     
JRNL        REF    MOL.MICROBIOL.                V.  67   420 2008              
JRNL        REFN                   ISSN 0950-382X                               
JRNL        PMID   18086185                                                     
JRNL        DOI    10.1111/J.1365-2958.2007.06054.X                             
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.95 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC                                               
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) : 1.95                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 10.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 98.0                           
REMARK   3   NUMBER OF REFLECTIONS             : 38432                          
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) : 0.181                           
REMARK   3   R VALUE            (WORKING SET) : 0.180                           
REMARK   3   FREE R VALUE                     : 0.203                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 1936                            
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) : 1.95                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.00                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 2214                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 82.64                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2880                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 123                          
REMARK   3   BIN FREE R VALUE                    : 0.3240                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 1743                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 26                                      
REMARK   3   SOLVENT ATOMS            : 193                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 41.01                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -0.30000                                             
REMARK   3    B22 (A**2) : -0.30000                                             
REMARK   3    B33 (A**2) : 0.46000                                              
REMARK   3    B12 (A**2) : -0.15000                                             
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): 0.096         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.096         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.073         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 2.600         
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.969                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.962                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  1888 ; 0.013 ; 0.022       
REMARK   3   BOND LENGTHS OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  2559 ; 1.340 ; 1.960       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   220 ; 6.215 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):   101 ;36.758 ;24.752       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   320 ;14.568 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):    11 ;18.371 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   276 ; 0.102 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  1447 ; 0.005 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):   786 ; 0.202 ; 0.200       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  1277 ; 0.309 ; 0.200       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):   182 ; 0.157 ; 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):    76 ; 0.209 ; 0.200       
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):    15 ; 0.257 ; 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):  1146 ; 0.834 ; 1.500       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  1797 ; 1.396 ; 2.000       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):   863 ; 1.925 ; 3.000       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):   762 ; 2.902 ; 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 : BABINET MODEL WITH MASK                              
REMARK   3   PARAMETERS FOR MASK CALCULATION                                    
REMARK   3   VDW PROBE RADIUS   : 1.40                                          
REMARK   3   ION PROBE RADIUS   : 0.80                                          
REMARK   3   SHRINKAGE RADIUS   : 0.80                                          
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THE RIDING   
REMARK   3  POSITIONS                                                           
REMARK   4                                                                      
REMARK   4 2QSQ COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 15-AUG-07.                  
REMARK 100 THE DEPOSITION ID IS D_1000044007.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 15-APR-06                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 7.0                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : ALS                                
REMARK 200  BEAMLINE                       : 5.0.1                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.00                               
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : MARRESEARCH                        
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK, HKL-2000                
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 38912                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.950                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 50.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 97.8                               
REMARK 200  DATA REDUNDANCY                : 4.400                              
REMARK 200  R MERGE                    (I) : 0.09400                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 15.0000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.95                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.02                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 83.4                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 2.50                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.80200                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 1.000                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL                         
REMARK 200 SOFTWARE USED: MOLREP                                                
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 78.14                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 5.63                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 3.0 M NACL, 100 MM TRIS-HCL PH 7.0,      
REMARK 280  TEMPERATURE 277K, VAPOR DIFFUSION                                   
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: H 3                              
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -Y,X-Y,Z                                                
REMARK 290       3555   -X+Y,-X,Z                                               
REMARK 290       4555   X+2/3,Y+1/3,Z+1/3                                       
REMARK 290       5555   -Y+2/3,X-Y+1/3,Z+1/3                                    
REMARK 290       6555   -X+Y+2/3,-X+1/3,Z+1/3                                   
REMARK 290       7555   X+1/3,Y+2/3,Z+2/3                                       
REMARK 290       8555   -Y+1/3,X-Y+2/3,Z+2/3                                    
REMARK 290       9555   -X+Y+1/3,-X+2/3,Z+2/3                                   
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 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   3 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   3 -0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       66.26550            
REMARK 290   SMTRY2   4  0.000000  1.000000  0.000000       38.25840            
REMARK 290   SMTRY3   4  0.000000  0.000000  1.000000       27.58733            
REMARK 290   SMTRY1   5 -0.500000 -0.866025  0.000000       66.26550            
REMARK 290   SMTRY2   5  0.866025 -0.500000  0.000000       38.25840            
REMARK 290   SMTRY3   5  0.000000  0.000000  1.000000       27.58733            
REMARK 290   SMTRY1   6 -0.500000  0.866025  0.000000       66.26550            
REMARK 290   SMTRY2   6 -0.866025 -0.500000  0.000000       38.25840            
REMARK 290   SMTRY3   6  0.000000  0.000000  1.000000       27.58733            
REMARK 290   SMTRY1   7  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   7  0.000000  1.000000  0.000000       76.51681            
REMARK 290   SMTRY3   7  0.000000  0.000000  1.000000       55.17467            
REMARK 290   SMTRY1   8 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   8  0.866025 -0.500000  0.000000       76.51681            
REMARK 290   SMTRY3   8  0.000000  0.000000  1.000000       55.17467            
REMARK 290   SMTRY1   9 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   9 -0.866025 -0.500000  0.000000       76.51681            
REMARK 290   SMTRY3   9  0.000000  0.000000  1.000000       55.17467            
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: DIMERIC                           
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 2610 ANGSTROM**2                          
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 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     GLU B   109                                                      
REMARK 465     LEU B   110                                                      
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   NH1  ARG B    38     O    HOH B   422              2.08            
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    ALA A  71       -7.34     84.23                                   
REMARK 500    LEU A  95       18.84     59.60                                   
REMARK 500    HIS B  27       73.83     67.65                                   
REMARK 500    ALA B  71       -7.98     82.48                                   
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 201                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL A 502                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE GOL A 202                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL B 501                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE GOL A 203                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC6                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE GOL A 204                 
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 2QST   RELATED DB: PDB                                   
REMARK 900 STRUCTURE OF THE V39C MUTANT OF THE N-TERMINAL DOMAIN OF             
REMARK 900 CARCINOEMBRYONIC ANTIGEN (CEA)                                       
REMARK 999                                                                      
REMARK 999 SEQUENCE                                                             
REMARK 999 THE SEQUENCE WAS OBTAINED FROM HUMAN CDNA                            
REMARK 999 AND THE AUTHORS CONFIRMED THAT ALA IS THE                            
REMARK 999 CORRECT SEQUENCE. HOWEVER, THE AUTHORS DO                            
REMARK 999 NOT KNOW IF IT IS A MUTATION INTRODUCED BY                           
REMARK 999 PCR OR WHETHER IT IS AN SNP THAT RESULTS IN                          
REMARK 999 THE DIFFERENT AMINO ACID.                                            
DBREF  2QSQ A    0   110  UNP    P06731   CEAM5_HUMAN     34    144             
DBREF  2QSQ B    0   110  UNP    P06731   CEAM5_HUMAN     34    144             
SEQADV 2QSQ ALA A   83  UNP  P06731    THR   117 SEE REMARK 999                 
SEQADV 2QSQ ALA B   83  UNP  P06731    THR   117 SEE REMARK 999                 
SEQRES   1 A  111  ALA LYS LEU THR ILE GLU SER THR PRO PHE ASN VAL ALA          
SEQRES   2 A  111  GLU GLY LYS GLU VAL LEU LEU LEU VAL HIS ASN LEU PRO          
SEQRES   3 A  111  GLN HIS LEU PHE GLY TYR SER TRP TYR LYS GLY GLU ARG          
SEQRES   4 A  111  VAL ASP GLY ASN ARG GLN ILE ILE GLY TYR VAL ILE GLY          
SEQRES   5 A  111  THR GLN GLN ALA THR PRO GLY PRO ALA TYR SER GLY ARG          
SEQRES   6 A  111  GLU ILE ILE TYR PRO ASN ALA SER LEU LEU ILE GLN ASN          
SEQRES   7 A  111  ILE ILE GLN ASN ASP ALA GLY PHE TYR THR LEU HIS VAL          
SEQRES   8 A  111  ILE LYS SER ASP LEU VAL ASN GLU GLU ALA THR GLY GLN          
SEQRES   9 A  111  PHE ARG VAL TYR PRO GLU LEU                                  
SEQRES   1 B  111  ALA LYS LEU THR ILE GLU SER THR PRO PHE ASN VAL ALA          
SEQRES   2 B  111  GLU GLY LYS GLU VAL LEU LEU LEU VAL HIS ASN LEU PRO          
SEQRES   3 B  111  GLN HIS LEU PHE GLY TYR SER TRP TYR LYS GLY GLU ARG          
SEQRES   4 B  111  VAL ASP GLY ASN ARG GLN ILE ILE GLY TYR VAL ILE GLY          
SEQRES   5 B  111  THR GLN GLN ALA THR PRO GLY PRO ALA TYR SER GLY ARG          
SEQRES   6 B  111  GLU ILE ILE TYR PRO ASN ALA SER LEU LEU ILE GLN ASN          
SEQRES   7 B  111  ILE ILE GLN ASN ASP ALA GLY PHE TYR THR LEU HIS VAL          
SEQRES   8 B  111  ILE LYS SER ASP LEU VAL ASN GLU GLU ALA THR GLY GLN          
SEQRES   9 B  111  PHE ARG VAL TYR PRO GLU LEU                                  
HET     CL  A 502       1                                                       
HET    GOL  A 202       6                                                       
HET    GOL  A 203       6                                                       
HET    GOL  A 204       6                                                       
HET    GOL  B 201       6                                                       
HET     CL  B 501       1                                                       
HETNAM      CL CHLORIDE ION                                                     
HETNAM     GOL GLYCEROL                                                         
HETSYN     GOL GLYCERIN; PROPANE-1,2,3-TRIOL                                    
FORMUL   3   CL    2(CL 1-)                                                     
FORMUL   4  GOL    4(C3 H8 O3)                                                  
FORMUL   9  HOH   *193(H2 O)                                                    
HELIX    1   1 ASP A   40  ASN A   42  5                                   3    
HELIX    2   2 ILE A   79  ALA A   83  5                                   5    
HELIX    3   3 ASP B   40  ASN B   42  5                                   3    
HELIX    4   4 ILE B   79  ALA B   83  5                                   5    
SHEET    1   A 4 THR A   3  THR A   7  0                                        
SHEET    2   A 4 VAL A  17  HIS A  22 -1  O  HIS A  22   N  THR A   3           
SHEET    3   A 4 LEU A  73  ILE A  75 -1  O  LEU A  73   N  LEU A  19           
SHEET    4   A 4 GLU A  65  ILE A  67 -1  N  ILE A  66   O  LEU A  74           
SHEET    1   B 6 ASN A  10  ALA A  12  0                                        
SHEET    2   B 6 GLU A  98  TYR A 107  1  O  ARG A 105   N  VAL A  11           
SHEET    3   B 6 GLY A  84  LYS A  92 -1  N  VAL A  90   O  GLU A  98           
SHEET    4   B 6 LEU A  28  LYS A  35 -1  N  PHE A  29   O  ILE A  91           
SHEET    5   B 6 GLN A  44  VAL A  49 -1  O  TYR A  48   N  TYR A  31           
SHEET    6   B 6 GLN A  54  PRO A  57 -1  O  THR A  56   N  GLY A  47           
SHEET    1   C 4 THR B   3  THR B   7  0                                        
SHEET    2   C 4 VAL B  17  HIS B  22 -1  O  HIS B  22   N  THR B   3           
SHEET    3   C 4 LEU B  73  ILE B  75 -1  O  LEU B  73   N  LEU B  19           
SHEET    4   C 4 GLU B  65  ILE B  67 -1  N  ILE B  66   O  LEU B  74           
SHEET    1   D 6 ASN B  10  ALA B  12  0                                        
SHEET    2   D 6 GLU B  98  TYR B 107  1  O  ARG B 105   N  VAL B  11           
SHEET    3   D 6 GLY B  84  LYS B  92 -1  N  VAL B  90   O  GLU B  98           
SHEET    4   D 6 LEU B  28  LYS B  35 -1  N  PHE B  29   O  ILE B  91           
SHEET    5   D 6 GLN B  44  VAL B  49 -1  O  ILE B  45   N  TRP B  33           
SHEET    6   D 6 THR B  56  PRO B  57 -1  O  THR B  56   N  GLY B  47           
CISPEP   1 THR A    7    PRO A    8          0        -3.36                     
CISPEP   2 THR B    7    PRO B    8          0        -4.85                     
SITE     1 AC1  6 SER A  93  TYR B  48  VAL B  49  THR B  52                    
SITE     2 AC1  6 GLN B  54  THR B  56                                          
SITE     1 AC2  3 LYS A  35  PHE A  85  HOH A 443                               
SITE     1 AC3  7 VAL A  21  HIS A  22  ASN A  23  HOH A 382                    
SITE     2 AC3  7 GLN B  76  ASN B  77  HOH B 480                               
SITE     1 AC4  2 LYS B  35  PHE B  85                                          
SITE     1 AC5  5 GLU A  16  HOH A 311  TYR B  68  ASN B  70                    
SITE     2 AC5  5 SER B  72                                                     
SITE     1 AC6  8 TYR A  61  GLY A  63  ARG A  64  GLU A  65                    
SITE     2 AC6  8 GLN A  76  TYR B  48  GLY B  51  THR B  52                    
CRYST1  132.531  132.531   82.762  90.00  90.00 120.00 H 3          18          
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      0.007545  0.004356  0.000000        0.00000                         
SCALE2      0.000000  0.008713  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.012083        0.00000