PDB Short entry for 1INV
HEADER    HYDROLASE                               26-SEP-94   1INV              
TITLE     A SIALIC ACID DERIVED PHOSPHONATE ANALOG INHIBITS DIFFERENT STRAINS OF
TITLE    2 INFLUENZA VIRUS NEURAMINIDASE WITH DIFFERENT EFFICIENCIES            
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: INFLUENZA VIRUS B/LEE/40 NEURAMINIDASE;                    
COMPND   3 CHAIN: A;                                                            
COMPND   4 EC: 3.2.1.18;                                                        
COMPND   5 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: INFLUENZA B VIRUS;                              
SOURCE   3 ORGANISM_TAXID: 11520;                                               
SOURCE   4 CELL_LINE: 293;                                                      
SOURCE   5 EXPRESSION_SYSTEM_STRAIN: 293                                        
KEYWDS    HYDROLASE, O-GLYCOSYL, NEURAMINIDASE, SIALIDASE                       
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    C.L.WHITE,M.N.JANAKIRAMAN,W.G.LAVER,C.PHILIPPON,A.VASELLA,G.M.AIR,    
AUTHOR   2 M.LUO                                                                
REVDAT   6   29-JUL-20 1INV    1       COMPND REMARK SEQADV HETNAM              
REVDAT   6 2                   1       LINK   SITE   ATOM                       
REVDAT   5   16-NOV-11 1INV    1       HETATM                                   
REVDAT   4   13-JUL-11 1INV    1       VERSN                                    
REVDAT   3   24-FEB-09 1INV    1       VERSN                                    
REVDAT   2   01-APR-03 1INV    1       JRNL                                     
REVDAT   1   07-FEB-95 1INV    0                                                
JRNL        AUTH   C.L.WHITE,M.N.JANAKIRAMAN,W.G.LAVER,C.PHILIPPON,A.VASELLA,   
JRNL        AUTH 2 G.M.AIR,M.LUO                                                
JRNL        TITL   A SIALIC ACID-DERIVED PHOSPHONATE ANALOG INHIBITS DIFFERENT  
JRNL        TITL 2 STRAINS OF INFLUENZA VIRUS NEURAMINIDASE WITH DIFFERENT      
JRNL        TITL 3 EFFICIENCIES.                                                
JRNL        REF    J.MOL.BIOL.                   V. 245   623 1995              
JRNL        REFN                   ISSN 0022-2836                               
JRNL        PMID   7844831                                                      
JRNL        DOI    10.1006/JMBI.1994.0051                                       
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   M.N.JANAKIRAMAN,C.L.WHITE,W.G.LAVER,G.M.AIR,M.LUO            
REMARK   1  TITL   STRUCTURE OF INFLUENZA VIRUS NEURAMINIDASE                   
REMARK   1  TITL 2 B(SLASH)LEE(SLASH)40 COMPLEXED WITH SIALIC ACID AND A        
REMARK   1  TITL 3 DEHYDRO ANALOG AT 1.8 ANGSTROMS RESOLUTION: IMPLICATIONS FOR 
REMARK   1  TITL 4 THE CATALYTIC MECHANISM                                      
REMARK   1  REF    BIOCHEMISTRY                  V.  33  8172 1994              
REMARK   1  REFN                   ISSN 0006-2960                               
REMARK   1 REFERENCE 2                                                          
REMARK   1  AUTH   J.N.VARGHESE,P.M.COLMAN                                      
REMARK   1  TITL   THREE-DIMENSIONAL STRUCTURE OF THE INFLUENZA VIRUS           
REMARK   1  TITL 2 A(SLASH)TOKYO(SLASH)3(SLASH)67 AT 2.2 ANGSTROMS RESOLUTION   
REMARK   1  REF    J.MOL.BIOL.                   V. 221   473 1991              
REMARK   1  REFN                   ISSN 0022-2836                               
REMARK   1 REFERENCE 3                                                          
REMARK   1  AUTH   W.R.LIP,J.N.VARGHESE,A.T.BAKER,A.VAN DANELAAR,W.G.LAVER,     
REMARK   1  AUTH 2 R.G.WEBSTER,P.M.COLMAN                                       
REMARK   1  TITL   REFINED ATOMIC STRUCTURES OF N9 SUBTYPE INFLUENZA VIRUS      
REMARK   1  TITL 2 NEURAMINIDASE AND ESCAPE MUTANTS                             
REMARK   1  REF    J.MOL.BIOL.                   V. 221   487 1991              
REMARK   1  REFN                   ISSN 0022-2836                               
REMARK   1 REFERENCE 4                                                          
REMARK   1  AUTH   K.WALLIMAN,A.VASELLA                                         
REMARK   1  TITL   PHOSPHONIC-ACID ANALOGS OF THE N-ACETYL-2-DEOXYNEURAMINIC    
REMARK   1  TITL 2 ACIDS: SYNTHESIS AND INHIBITION OF VIBRIO CHOLEAE SIALIDASE  
REMARK   1  REF    HELV.CHIM.ACTA                V.  73  1359 1990              
REMARK   1  REFN                   ISSN 0018-019X                               
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.40 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : X-PLOR                                               
REMARK   3   AUTHORS     : BRUNGER                                              
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.40                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 8.00                           
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 2.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : NULL                           
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : NULL                           
REMARK   3   NUMBER OF REFLECTIONS             : 16341                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : NULL                            
REMARK   3   FREE R VALUE TEST SET SELECTION  : NULL                            
REMARK   3   R VALUE            (WORKING SET) : 0.154                           
REMARK   3   FREE R VALUE                     : NULL                            
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : NULL                            
REMARK   3   FREE R VALUE TEST SET COUNT      : NULL                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : NULL                            
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : NULL                         
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : NULL                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : NULL                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : NULL                         
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : NULL                         
REMARK   3   BIN R VALUE           (WORKING SET) : NULL                         
REMARK   3   BIN FREE R VALUE                    : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : NULL                         
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : NULL                         
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 3040                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 37                                      
REMARK   3   SOLVENT ATOMS            : 117                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 13.13                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : NULL                                                 
REMARK   3    B22 (A**2) : NULL                                                 
REMARK   3    B33 (A**2) : NULL                                                 
REMARK   3    B12 (A**2) : NULL                                                 
REMARK   3    B13 (A**2) : NULL                                                 
REMARK   3    B23 (A**2) : NULL                                                 
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : 0.22                            
REMARK   3   ESD FROM SIGMAA              (A) : NULL                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : NULL                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : NULL                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : NULL                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.012                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.770                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 26.88                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 1.450                           
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : NULL                                      
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  NCS MODEL : NULL                                                    
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS.                         RMS   SIGMA/WEIGHT          
REMARK   3   GROUP  1  POSITIONAL            (A) : NULL  ; NULL                 
REMARK   3   GROUP  1  B-FACTOR           (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  PARAMETER FILE  1  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1INV COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL.                                
REMARK 100 THE DEPOSITION ID IS D_1000174217.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : NULL                               
REMARK 200  TEMPERATURE           (KELVIN) : NULL                               
REMARK 200  PH                             : NULL                               
REMARK 200  NUMBER OF CRYSTALS USED        : NULL                               
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : NULL                               
REMARK 200  RADIATION SOURCE               : NULL                               
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : NULL                               
REMARK 200  WAVELENGTH OR RANGE        (A) : NULL                               
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : NULL                               
REMARK 200  DETECTOR MANUFACTURER          : NULL                               
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : NULL                               
REMARK 200  DATA SCALING SOFTWARE          : NULL                               
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 17019                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : NULL                               
REMARK 200  RESOLUTION RANGE LOW       (A) : NULL                               
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 2.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 72.3                               
REMARK 200  DATA REDUNDANCY                : NULL                               
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : NULL                               
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : NULL                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : NULL                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: NULL                                           
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL                         
REMARK 200 SOFTWARE USED: X-PLOR                                                
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 61.74                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.22                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: NATIVE CRYSTALS SOAKED IN 10MM EPANA     
REMARK 280  SOLUTION, PH 7.4.                                                   
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 4 21 2                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,-Y,Z                                                 
REMARK 290       3555   -Y+1/2,X+1/2,Z                                          
REMARK 290       4555   Y+1/2,-X+1/2,Z                                          
REMARK 290       5555   -X+1/2,Y+1/2,-Z                                         
REMARK 290       6555   X+1/2,-Y+1/2,-Z                                         
REMARK 290       7555   Y,X,-Z                                                  
REMARK 290       8555   -Y,-X,-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        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   3  0.000000 -1.000000  0.000000       62.36500            
REMARK 290   SMTRY2   3  1.000000  0.000000  0.000000       62.36500            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   4  0.000000  1.000000  0.000000       62.36500            
REMARK 290   SMTRY2   4 -1.000000  0.000000  0.000000       62.36500            
REMARK 290   SMTRY3   4  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   5 -1.000000  0.000000  0.000000       62.36500            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       62.36500            
REMARK 290   SMTRY3   5  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   6  1.000000  0.000000  0.000000       62.36500            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       62.36500            
REMARK 290   SMTRY3   6  0.000000  0.000000 -1.000000        0.00000            
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        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: TETRAMERIC                        
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TETRAMERIC                 
REMARK 350 SOFTWARE USED: PISA,PQS                                              
REMARK 350 TOTAL BURIED SURFACE AREA: 19480 ANGSTROM**2                         
REMARK 350 SURFACE AREA OF THE COMPLEX: 45970 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -123.0 KCAL/MOL                       
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   BIOMT1   2 -1.000000  0.000000  0.000000      124.73000            
REMARK 350   BIOMT2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   3  0.000000 -1.000000  0.000000       62.36500            
REMARK 350   BIOMT2   3  1.000000  0.000000  0.000000      -62.36500            
REMARK 350   BIOMT3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   4  0.000000  1.000000  0.000000       62.36500            
REMARK 350   BIOMT2   4 -1.000000  0.000000  0.000000       62.36500            
REMARK 350   BIOMT3   4  0.000000  0.000000  1.000000        0.00000            
REMARK 375                                                                      
REMARK 375 SPECIAL POSITION                                                     
REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS            
REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL          
REMARK 375 POSITIONS.                                                           
REMARK 375                                                                      
REMARK 375 ATOM RES CSSEQI                                                      
REMARK 375 CA    CA A 469  LIES ON A SPECIAL POSITION.                          
REMARK 450                                                                      
REMARK 450 SOURCE                                                               
REMARK 450 EPANA                                                                
REMARK 450  SEE WALLIMAN & VASELLA (1990) FOR SYNTHESIS.                        
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  HH22  ARG A   374    HOP3  EQP A   500              0.81            
REMARK 500   HG   SER A   158     HE2  HIS A   173              0.99            
REMARK 500   H1   HOH A   595     H1   HOH A   596              1.06            
REMARK 500   H    SER A   110     H2   HOH A   509              1.10            
REMARK 500  HD21  ASN A   230     H2   HOH A   559              1.14            
REMARK 500   H    PHE A   281     H2   HOH A   575              1.15            
REMARK 500   H    GLY A   145     H2   HOH A   606              1.15            
REMARK 500   H    GLY A   350     H1   HOH A   585              1.16            
REMARK 500   H    ASN A   198     H2   HOH A   543              1.17            
REMARK 500   HG1  THR A   443     H2   HOH A   611              1.18            
REMARK 500   H    ALA A   312     H2   HOH A   569              1.19            
REMARK 500   HE2  HIS A   101     HG   SER A   440              1.20            
REMARK 500   HG1  THR A   309     HG1  THR A   311              1.22            
REMARK 500   H    LYS A    94     H2   HOH A   613              1.24            
REMARK 500  HE21  GLN A    93     H    LEU A   455              1.27            
REMARK 500   HD1  HIS A   173     H2   HOH A   536              1.27            
REMARK 500   H    HIS A   101     H1   HOH A   603              1.28            
REMARK 500   HG1  THR A   166     H    ASN A   169              1.28            
REMARK 500   HH   TYR A   322     H    ILE A   333              1.31            
REMARK 500   HH   TYR A   210     H1   HOH A   549              1.32            
REMARK 500  HH11  ARG A   270    HD21  ASN A   340              1.33            
REMARK 500   HZ2  LYS A   263     H1   HOH A   565              1.35            
REMARK 500   O    GLY A   412     H1   HOH A   573              1.49            
REMARK 500   O    ASP A   384     H1   HOH A   592              1.53            
REMARK 500   NH2  ARG A   374    HOP3  EQP A   500              1.56            
REMARK 500  HH22  ARG A   116     O3P  EQP A   500              1.59            
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   HH   TYR A   142     H    ASP A   463     4555     1.12            
REMARK 500   H    ALA A   137     H2   HOH A   508     4555     1.16            
REMARK 500   H    GLN A   453     H2   HOH A   551     3545     1.23            
REMARK 500   H    LEU A    97     HE2  HIS A   155     3545     1.35            
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    CYS A 229   CA  -  CB  -  SG  ANGL. DEV. =   6.8 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    GLU A 126      145.05    173.79                                   
REMARK 500    ARG A 186      -32.95   -130.58                                   
REMARK 500    ASP A 199       57.70   -164.55                                   
REMARK 500    ILE A 221       71.08     51.00                                   
REMARK 500    THR A 224     -154.48   -127.57                                   
REMARK 500    SER A 283     -174.86   -173.28                                   
REMARK 500    ARG A 382      117.38   -161.74                                   
REMARK 500    ASP A 384     -155.65     53.57                                   
REMARK 500    TRP A 408     -125.05   -103.01                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 600                                                                      
REMARK 600 HETEROGEN                                                            
REMARK 600                                                                      
REMARK 600 TWO CALCIUMS ATOMS ARE INCLUDED IN THE REFINED STRUCTURE.            
REMARK 600 RESIDUE CA 467 STABILIZES A LOOP NEAR THE NEURAMINIDASE              
REMARK 600 ACTIVE SITE, WHILE CA 468 IS LOCATED ON THE                          
REMARK 600 CRYSTALLOGRAPHIC NEURAMINIDASE TETRAMER FOUR-FOLD AXIS.              
REMARK 600                                                                      
REMARK 600 THE EQUATORIAL PHOSPHONATE INHIBITOR IS RESIDUE EQP 500.             
REMARK 600 EQP IS AN EQUATORIAL PHOSPHONATE ANALOG OF O-SIALIC ACID.            
REMARK 620                                                                      
REMARK 620 METAL COORDINATION                                                   
REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE):                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              CA A 469  CA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLU A 168   OE1                                                    
REMARK 620 2 GLU A 168   OE1  89.8                                              
REMARK 620 3 GLU A 168   OE1 175.2  89.9                                        
REMARK 620 4 GLU A 168   OE1  89.9 175.2  90.0                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              CA A 468  CA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 ASP A 293   O                                                      
REMARK 620 2 THR A 297   O    91.1                                              
REMARK 620 3 ASP A 324   OD2  89.9 102.4                                        
REMARK 620 4 GLY A 346   O    98.0 151.1 105.0                                  
REMARK 620 5 HOH A 501   O   173.9  83.5  94.1  85.5                            
REMARK 620 6 HOH A 502   O    81.2  79.3 171.0  75.2  94.9                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: CAT                                                 
REMARK 800 EVIDENCE_CODE: AUTHOR                                                
REMARK 800 SITE_DESCRIPTION: SUBSTRATE (SIALIC ACID) BINDING RESIDUES IN        
REMARK 800  CATALYTIC SITE                                                      
DBREF  1INV A   77   466  UNP    P03474   NRAM_INBLE      77    466             
SEQADV 1INV ARG A  382  UNP  P03474    LYS   382 CONFLICT                       
SEQRES   1 A  390  GLU PRO GLU TRP THR TYR PRO ARG LEU SER CYS GLN GLY          
SEQRES   2 A  390  SER THR PHE GLN LYS ALA LEU LEU ILE SER PRO HIS ARG          
SEQRES   3 A  390  PHE GLY GLU ILE LYS GLY ASN SER ALA PRO LEU ILE ILE          
SEQRES   4 A  390  ARG GLU PRO PHE VAL ALA CYS GLY PRO LYS GLU CYS ARG          
SEQRES   5 A  390  HIS PHE ALA LEU THR HIS TYR ALA ALA GLN PRO GLY GLY          
SEQRES   6 A  390  TYR TYR ASN GLY THR ARG LYS ASP ARG ASN LYS LEU ARG          
SEQRES   7 A  390  HIS LEU VAL SER VAL LYS LEU GLY LYS ILE PRO THR VAL          
SEQRES   8 A  390  GLU ASN SER ILE PHE HIS MET ALA ALA TRP SER GLY SER          
SEQRES   9 A  390  ALA CYS HIS ASP GLY ARG GLU TRP THR TYR ILE GLY VAL          
SEQRES  10 A  390  ASP GLY PRO ASP ASN ASP ALA LEU VAL LYS ILE LYS TYR          
SEQRES  11 A  390  GLY GLU ALA TYR THR ASP THR TYR HIS SER TYR ALA HIS          
SEQRES  12 A  390  ASN ILE LEU ARG THR GLN GLU SER ALA CYS ASN CYS ILE          
SEQRES  13 A  390  GLY GLY ASP CYS TYR LEU MET ILE THR ASP GLY SER ALA          
SEQRES  14 A  390  SER GLY ILE SER LYS CYS ARG PHE LEU LYS ILE ARG GLU          
SEQRES  15 A  390  GLY ARG ILE ILE LYS GLU ILE LEU PRO THR GLY ARG VAL          
SEQRES  16 A  390  GLU HIS THR GLU GLU CYS THR CYS GLY PHE ALA SER ASN          
SEQRES  17 A  390  LYS THR ILE GLU CYS ALA CYS ARG ASP ASN SER TYR THR          
SEQRES  18 A  390  ALA LYS ARG PRO PHE VAL LYS LEU ASN VAL GLU THR ASP          
SEQRES  19 A  390  THR ALA GLU ILE ARG LEU MET CYS THR LYS THR TYR LEU          
SEQRES  20 A  390  ASP THR PRO ARG PRO ASP ASP GLY SER ILE ALA GLY PRO          
SEQRES  21 A  390  CYS GLU SER ASN GLY ASP LYS TRP LEU GLY GLY ILE LYS          
SEQRES  22 A  390  GLY GLY PHE VAL HIS GLN ARG MET ALA SER LYS ILE GLY          
SEQRES  23 A  390  ARG TRP TYR SER ARG THR MET SER LYS THR ASN ARG MET          
SEQRES  24 A  390  GLY MET GLU LEU TYR VAL ARG TYR ASP GLY ASP PRO TRP          
SEQRES  25 A  390  THR ASP SER ASP ALA LEU THR LEU SER GLY VAL MET VAL          
SEQRES  26 A  390  SER ILE GLU GLU PRO GLY TRP TYR SER PHE GLY PHE GLU          
SEQRES  27 A  390  ILE LYS ASP LYS LYS CYS ASP VAL PRO CYS ILE GLY ILE          
SEQRES  28 A  390  GLU MET VAL HIS ASP GLY GLY LYS ASP THR TRP HIS SER          
SEQRES  29 A  390  ALA ALA THR ALA ILE TYR CYS LEU MET GLY SER GLY GLN          
SEQRES  30 A  390  LEU LEU TRP ASP THR VAL THR GLY VAL ASP MET ALA LEU          
MODRES 1INV ASN A  284  ASN  GLYCOSYLATION SITE                                 
HET    NAG  A 467A     28                                                       
HET     CA  A 468       1                                                       
HET     CA  A 469       1                                                       
HET    EQP  A 500      40                                                       
HETNAM     NAG 2-ACETAMIDO-2-DEOXY-BETA-D-GLUCOPYRANOSE                         
HETNAM      CA CALCIUM ION                                                      
HETNAM     EQP (1R)-4-ACETAMIDO-1,5-ANHYDRO-2,4-DIDEOXY-1-PHOSPHONO-D-          
HETNAM   2 EQP  GLYCERO-D-GALACTO-OCTITOL                                       
FORMUL   2  NAG    C8 H15 N O6                                                  
FORMUL   3   CA    2(CA 2+)                                                     
FORMUL   5  EQP    C10 H20 N O9 P                                               
FORMUL   6  HOH   *117(H2 O)                                                    
HELIX    1   1 SER A   99  GLY A  104  5                                   6    
HELIX    2   2 PRO A  196  ASP A  199  5                                   4    
SHEET    1   A 4 PHE A  92  ILE A  98  0                                        
SHEET    2   A 4 SER A 440  LEU A 448 -1  O  THR A 443   N  ILE A  98           
SHEET    3   A 4 ASP A 421  HIS A 431 -1  O  PRO A 423   N  LEU A 448           
SHEET    4   A 4 SER A 410  LYS A 416 -1  O  PHE A 411   N  GLY A 426           
SHEET    1   B 4 LEU A 113  CYS A 122  0                                        
SHEET    2   B 4 CYS A 127  ALA A 137 -1  N  ARG A 128   O  ALA A 121           
SHEET    3   B 4 HIS A 155  LYS A 160 -1  O  HIS A 155   N  THR A 133           
SHEET    4   B 4 ILE A 171  ALA A 175 -1  N  ILE A 171   O  SER A 158           
SHEET    1   C 4 SER A 178  HIS A 183  0                                        
SHEET    2   C 4 TRP A 188  ASP A 194 -1  N  THR A 189   O  CYS A 182           
SHEET    3   C 4 LEU A 201  TYR A 206 -1  N  LEU A 201   O  ASP A 194           
SHEET    4   C 4 ALA A 209  HIS A 215 -1  O  ALA A 209   N  TYR A 206           
SHEET    1   D 4 ARG A 260  ILE A 265  0                                        
SHEET    2   D 4 SER A 249  ARG A 257 -1  O  PHE A 253   N  ILE A 265           
SHEET    3   D 4 ASP A 235  GLY A 243 -1  N  CYS A 236   O  ILE A 256           
SHEET    4   D 4 ARG A 223  THR A 224 -1  N  ARG A 223   O  THR A 241           
SHEET    1   E 4 ARG A 260  ILE A 265  0                                        
SHEET    2   E 4 SER A 249  ARG A 257 -1  O  PHE A 253   N  ILE A 265           
SHEET    3   E 4 ASP A 235  GLY A 243 -1  N  CYS A 236   O  ILE A 256           
SHEET    4   E 4 ASN A 230  ILE A 232 -1  O  ASN A 230   N  TYR A 237           
SHEET    1   F 5 THR A 268  GLY A 269  0                                        
SHEET    2   F 5 THR A 311  LEU A 316  1  O  ALA A 312   N  THR A 268           
SHEET    3   F 5 PRO A 301  ASN A 306 -1  N  PHE A 302   O  ARG A 315           
SHEET    4   F 5 THR A 286  ARG A 292 -1  O  ILE A 287   N  LEU A 305           
SHEET    5   F 5 GLU A 275  PHE A 281 -1  O  GLU A 275   N  ARG A 292           
SHEET    1   G 4 PHE A 352  ARG A 356  0                                        
SHEET    2   G 4 ILE A 361  ARG A 367 -1  N  GLY A 362   O  GLN A 355           
SHEET    3   G 4 MET A 375  TYR A 383 -1  N  GLU A 378   O  ARG A 367           
SHEET    4   G 4 THR A 395  PRO A 406 -1  N  THR A 395   O  VAL A 381           
SSBOND   1 CYS A   87    CYS A  420                          1555   1555  2.01  
SSBOND   2 CYS A  122    CYS A  127                          1555   1555  2.03  
SSBOND   3 CYS A  182    CYS A  229                          1555   1555  2.02  
SSBOND   4 CYS A  231    CYS A  236                          1555   1555  2.03  
SSBOND   5 CYS A  277    CYS A  291                          1555   1555  2.02  
SSBOND   6 CYS A  279    CYS A  289                          1555   1555  2.02  
SSBOND   7 CYS A  318    CYS A  337                          1555   1555  2.02  
SSBOND   8 CYS A  424    CYS A  447                          1555   1555  2.02  
LINK         ND2 ASN A 284                 C1  NAG A 467A    1555   1555  1.44  
LINK         OE1 GLU A 168                CA    CA A 469     1555   1555  2.26  
LINK         OE1 GLU A 168                CA    CA A 469     3545   1555  2.26  
LINK         OE1 GLU A 168                CA    CA A 469     2655   1555  2.26  
LINK         OE1 GLU A 168                CA    CA A 469     4555   1555  2.26  
LINK         O   ASP A 293                CA    CA A 468     1555   1555  2.48  
LINK         O   THR A 297                CA    CA A 468     1555   1555  2.54  
LINK         OD2 ASP A 324                CA    CA A 468     1555   1555  2.26  
LINK         O   GLY A 346                CA    CA A 468     1555   1555  2.40  
LINK        CA    CA A 468                 O   HOH A 501     1555   1555  2.55  
LINK        CA    CA A 468                 O   HOH A 502     1555   1555  2.48  
CISPEP   1 GLN A  138    PRO A  139          0         0.39                     
CISPEP   2 THR A  325    PRO A  326          0        -0.57                     
SITE     1 CAT 11 ARG A 116  GLU A 117  ASP A 149  ARG A 150                    
SITE     2 CAT 11 TRP A 177  ILE A 221  ARG A 223  GLU A 275                    
SITE     3 CAT 11 ARG A 292  ARG A 374  TYR A 409                               
CRYST1  124.730  124.730   71.880  90.00  90.00  90.00 P 4 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      0.008017  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.008017  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.013912        0.00000