PDB Short entry for 1QAE
HEADER    ENDONUCLEASE                            03-MAR-99   1QAE              
TITLE     THE ACTIVE SITE OF SERRATIA ENDONUCLEASE CONTAINS A CONSERVED         
TITLE    2 MAGNESIUM-WATER CLUSTER                                              
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: PROTEIN (EXTRACELLULAR ENDONUCLEASE);                      
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 EC: 3.1.30.2;                                                        
COMPND   5 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: SERRATIA MARCESCENS;                            
SOURCE   3 ORGANISM_TAXID: 615;                                                 
SOURCE   4 STRAIN: SM6;                                                         
SOURCE   5 CELLULAR_LOCATION: EXTRACELLULAR;                                    
SOURCE   6 EXPRESSION_SYSTEM: SERRATIA MARCESCENS;                              
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 615;                                        
SOURCE   8 EXPRESSION_SYSTEM_STRAIN: PROTEASE DEFICIENT STRAIN;                 
SOURCE   9 EXPRESSION_SYSTEM_PLASMID: PUC19NUC4OC;                              
SOURCE  10 EXPRESSION_SYSTEM_GENE: NUCA                                         
KEYWDS    NUCLEASE, DNASE, RNASE, SUGAR-NONSPECIFIC NUCLEASE, MAGNESIUM,        
KEYWDS   2 ENDONUCLEASE                                                         
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    M.D.MILLER,K.L.KRAUSE                                                 
REVDAT   4   18-APR-18 1QAE    1       REMARK                                   
REVDAT   3   04-OCT-17 1QAE    1       REMARK                                   
REVDAT   2   24-FEB-09 1QAE    1       VERSN                                    
REVDAT   1   18-MAY-99 1QAE    0                                                
JRNL        AUTH   M.D.MILLER,J.CAI,K.L.KRAUSE                                  
JRNL        TITL   THE ACTIVE SITE OF SERRATIA ENDONUCLEASE CONTAINS A          
JRNL        TITL 2 CONSERVED MAGNESIUM-WATER CLUSTER.                           
JRNL        REF    J.MOL.BIOL.                   V. 288   975 1999              
JRNL        REFN                   ISSN 0022-2836                               
JRNL        PMID   10329193                                                     
JRNL        DOI    10.1006/JMBI.1999.2729                                       
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   M.D.MILLER,K.L.KRAUSE                                        
REMARK   1  TITL   IDENTIFICATION OF THE SERRATIA ENDONUCLEASE DIMER:           
REMARK   1  TITL 2 STRUCTURAL BASIS AND IMPLICATIONS FOR CATALYSIS              
REMARK   1  REF    PROTEIN SCI.                  V.   5    24 1996              
REMARK   1  REFN                   ISSN 0961-8368                               
REMARK   1 REFERENCE 2                                                          
REMARK   1  AUTH   M.D.MILLER,J.TANNER,M.ALPAUGH,M.J.BENEDIK,K.L.KRAUSE         
REMARK   1  TITL   2.1 ANGSTROMS STRUCTURE OF SERRATIA ENDONUCLEASE SUGGESTS A  
REMARK   1  TITL 2 MECHANISM FOR BINDING TO DOUBLE-STRANDED DNA                 
REMARK   1  REF    NAT.STRUCT.BIOL.              V.   1   461 1994              
REMARK   1  REFN                   ISSN 1072-8368                               
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.05 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : X-PLOR 3.851                                         
REMARK   3   AUTHORS     : BRUNGER                                              
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.05                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 50.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 2.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 10000000.000                   
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : 0.0000                         
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 83.0                           
REMARK   3   NUMBER OF REFLECTIONS             : 29209                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : THROUGHOUT                      
REMARK   3   FREE R VALUE TEST SET SELECTION  : RANDOM                          
REMARK   3   R VALUE            (WORKING SET) : 0.167                           
REMARK   3   FREE R VALUE                     : 0.210                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.100                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 1483                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : 0.005                           
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 6                            
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.05                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.18                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 49.40                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 2728                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.1920                       
REMARK   3   BIN FREE R VALUE                    : 0.2100                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 4.30                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 122                          
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.019                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 3690                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 2                                       
REMARK   3   SOLVENT ATOMS            : 251                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 6.60                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 14.80                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 0.00000                                              
REMARK   3    B22 (A**2) : 0.00000                                              
REMARK   3    B33 (A**2) : 0.00000                                              
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : 0.19                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.15                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : 5.00                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : 0.24                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.15                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.005                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.300                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 26.60                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 0.610                           
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : RESTRAINED                                
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : 1.120 ; 1.500                
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : 1.830 ; 2.000                
REMARK   3   SIDE-CHAIN BOND              (A**2) : 2.320 ; 2.250                
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : 3.530 ; 2.500                
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) : 0.782 ; 1.0                  
REMARK   3   GROUP  2  POSITIONAL            (A) : NULL  ; NULL                 
REMARK   3   GROUP  2  B-FACTOR           (A**2) : 0.275 ; 0.3                  
REMARK   3                                                                      
REMARK   3  PARAMETER FILE  1  : PROTEIN_REP.PARAM                              
REMARK   3  PARAMETER FILE  2  : NULL                                           
REMARK   3  PARAMETER FILE  3  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : TOPHCSDX.PRO                                   
REMARK   3  TOPOLOGY FILE  2   : TOPH19.SOL                                     
REMARK   3  TOPOLOGY FILE  3   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS:                                           
REMARK   3  BULK SOLVENT MODEL USED, NCS B-FACTORS RESTRAINTS WERE APPLIED TO   
REMARK   3  PROTEIN                                                             
REMARK   3  ATOMS AND PAIRS OF WATER MOLECULES WHICH DEVIATED LESS THAN 1.0     
REMARK   3  ANGSTROMS FROM                                                      
REMARK   3                                                                      
REMARK   3  NCS. THE PROTEIN ATOMS ARE IN GROUP 1 AND THE WATER IS IN GROUP 2.  
REMARK   3  WATER HOH                                                           
REMARK   3  1 SITS ON THE NON-CRYSTALLOGRAPHIC 2-FOLD AXIS AND IT IS ITS OWN    
REMARK   3  NCS MATE. THE                                                       
REMARK   3                                                                      
REMARK   3  WATER PAIRS IN GROUP 2 BEGIN WITH (HOH  2,HOH  3) AND END WITH      
REMARK   3  (HOH  188,                                                          
REMARK   3  HOH  189). WATERS HOH  190 TO HOH  241 DO NOT HAVE NCS MATES        
REMARK   3  WITHIN 1.0                                                          
REMARK   3  ANGSTROMS.                                                          
REMARK   3                                                                      
REMARK   3  CRYST1                                                              
REMARK   3    THERE IS STRONG PSEUDO-CENTERING ARISING FROM THE                 
REMARK   3    NON-CRYSTALLOGRAPHIC SYMMETRY.  SHIFTING ONE MONOMER BY           
REMARK   3    ONLY 1.4 ANGSTROMS WITH A 1 DEGREE ROTATION WOULD CHANGE          
REMARK   3    THE SPACE GROUP TO I 2 2 2.                                       
REMARK   4                                                                      
REMARK   4 1QAE COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 03-MAR-99.                  
REMARK 100 THE DEPOSITION ID IS D_1000009007.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 02-FEB-98                          
REMARK 200  TEMPERATURE           (KELVIN) : 288                                
REMARK 200  PH                             : 8.2                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : N                                  
REMARK 200  RADIATION SOURCE               : ROTATING ANODE                     
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : RIGAKU RU200                       
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.5418                             
REMARK 200  MONOCHROMATOR                  : GRAPHITE                           
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : DIFFRACTOMETER                     
REMARK 200  DETECTOR MANUFACTURER          : ENRAF-NONIUS FAST                  
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : PROCOR, MADNESS                    
REMARK 200  DATA SCALING SOFTWARE          : PROCOR, XSCALE                     
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 30574                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.050                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 45.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 84.3                               
REMARK 200  DATA REDUNDANCY                : 3.100                              
REMARK 200  R MERGE                    (I) : 0.02500                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 40.8700                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.05                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.10                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 20.4                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 1.60                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.04500                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 18.90                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL                         
REMARK 200 SOFTWARE USED: X-PLOR 3.851                                          
REMARK 200 STARTING MODEL: 1.4 ANGSTROM STRUCTURE OF THE SERRATIAL              
REMARK 200  ENDONUCLEASE (CAI, MILLER AND KRAUSE) WITH WATER AND ALTERNATE      
REMARK 200  SIDE CHAIN CONFORMERS REMOVED AND THE SIDE CHAINS FOR THE ACTIVE    
REMARK 200  SITE RESIDUES ARG 57, HIS 89, ASN 199 AND GLU 127 OMITTED           
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 52.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.57                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: CRYSTALLIZATION METHOD: VAPOR            
REMARK 280  DIFFUSION SITTING DROP CRYSTALLIZATION TEMPERATURE: 277 K           
REMARK 280  CRYSTALLIZATION PH: 4.6 CRYSTALS WERE GROWN FROM PEG 3350,          
REMARK 280  AMMONIUM SULFATE, SODIUM ACETATE, AND STORED IN A STABILIZATION     
REMARK 280  SOLUTION CONTAINING 20% PEG 3000, 400MM GLYCINE, 40MM TRIS,         
REMARK 280  PH8.2 (293 K), 20% PEG 3000, 10% PEG 400. THIS SOLUTION WAS         
REMARK 280  EXCHANGED THREE TIMES TO MINIMIZE CARRY OVER FROM THE STORAGE       
REMARK 280  SOLUTION. AFTER 3 DAYS IN THE MAGNESIUM STABILIZATION SOLUTION,     
REMARK 280  THE CRYSTAL OF DIMENSION 0.4 X 0.4 X 0.3 MM**2 WAS MOUNTED IN A     
REMARK 280  SILICONIZED SPECIAL GLASS CAPILLARY. , VAPOR DIFFUSION, SITTING     
REMARK 280  DROP                                                                
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 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   -X+1/2,Y+1/2,-Z                                         
REMARK 290       4555   X+1/2,-Y+1/2,-Z                                         
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000        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 -1.000000  0.000000  0.000000       53.35000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       37.25000            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       53.35000            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       37.25000            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 300 REMARK: MTRIX                                                        
REMARK 300  THE TRANSFORMATIONS PRESENTED ON MTRIX RECORDS BELOW                
REMARK 300  DESCRIBE NON-CRYSTALLOGRAPHIC RELATIONSHIPS AMONG THE               
REMARK 300  VARIOUS DOMAINS IN THIS ENTRY.  APPLYING THE APPROPRIATE            
REMARK 300  MTRIX TRANSFORMATION TO THE RESIDUES LISTED FIRST WILL              
REMARK 300  YIELD APPROXIMATE COORDINATES FOR THE RESIDUES LISTED               
REMARK 300  SECOND.                                                             
REMARK 300                                                                      
REMARK 300            APPLIED TO           TRANSFORMED TO                       
REMARK 300  MTRIX      RESIDUES               RESIDUES         RMSD             
REMARK 300    M1   A    5  ..  A  245     B    5  ..  B  245   0.131            
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 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     ASP A     1                                                      
REMARK 465     THR A     2                                                      
REMARK 465     LEU A     3                                                      
REMARK 465     GLU A     4                                                      
REMARK 465     SER A     5                                                      
REMARK 465     ASP B     1                                                      
REMARK 465     THR B     2                                                      
REMARK 465     LEU B     3                                                      
REMARK 465     GLU B     4                                                      
REMARK 465     SER B     5                                                      
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  10      -51.38     68.14                                   
REMARK 500    LYS A  37        6.74     83.81                                   
REMARK 500    GLN A  90      -63.22    -92.61                                   
REMARK 500    ALA A  97       -2.38    -56.74                                   
REMARK 500    ASN A 177      -99.62     63.12                                   
REMARK 500    ALA B  10      -47.09     65.48                                   
REMARK 500    LYS B  37        6.79     83.08                                   
REMARK 500    ALA B  52      134.28   -170.52                                   
REMARK 500    GLN B  90      -62.54    -91.73                                   
REMARK 500    ASN B 177      -95.88     61.80                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
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                              MG A 251  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 ASN A 119   OD1                                                    
REMARK 620 2 HOH A 253   O    87.2                                              
REMARK 620 3 HOH A 256   O   171.4  90.4                                        
REMARK 620 4 HOH A 254   O    80.4  99.2  91.9                                  
REMARK 620 5 HOH A 252   O    96.2 102.9  92.4 157.5                            
REMARK 620 6 HOH A 255   O    85.4 172.4  96.7  77.9  79.7                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG B 251  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 ASN B 119   OD1                                                    
REMARK 620 2 HOH B 255   O    84.6                                              
REMARK 620 3 HOH B 256   O   177.3  95.4                                        
REMARK 620 4 HOH B 252   O    97.6  76.2  85.0                                  
REMARK 620 5 HOH B 254   O    83.7  82.7  93.6 158.6                            
REMARK 620 6 HOH B 253   O    90.8 172.0  89.5  98.1 103.3                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: ASA                                                 
REMARK 800 EVIDENCE_CODE: AUTHOR                                                
REMARK 800 SITE_DESCRIPTION: ACTIVE SITE REGION IN MONOMER A WITH CATALYTIC     
REMARK 800  MAGNESIUM WATER CLUSTER                                             
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: ASB                                                 
REMARK 800 EVIDENCE_CODE: AUTHOR                                                
REMARK 800 SITE_DESCRIPTION: ACTIVE SITE REGION IN MONOMER B WITH CATALYTIC     
REMARK 800  MAGNESIUM WATER CLUSTER                                             
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 251                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG B 251                  
REMARK 999                                                                      
REMARK 999 SEQUENCE                                                             
REMARK 999 REFERENCE                                                            
REMARK 999   DATABASE: GENBANK                                                  
REMARK 999   ENTRY_NAME: SMANUCES                                               
DBREF  1QAE A    1   245  UNP    P13717   NUCA_SERMA      22    266             
DBREF  1QAE B    1   245  UNP    P13717   NUCA_SERMA      22    266             
SEQRES   1 A  245  ASP THR LEU GLU SER ILE ASP ASN CYS ALA VAL GLY CYS          
SEQRES   2 A  245  PRO THR GLY GLY SER SER ASN VAL SER ILE VAL ARG HIS          
SEQRES   3 A  245  ALA TYR THR LEU ASN ASN ASN SER THR THR LYS PHE ALA          
SEQRES   4 A  245  ASN TRP VAL ALA TYR HIS ILE THR LYS ASP THR PRO ALA          
SEQRES   5 A  245  SER GLY LYS THR ARG ASN TRP LYS THR ASP PRO ALA LEU          
SEQRES   6 A  245  ASN PRO ALA ASP THR LEU ALA PRO ALA ASP TYR THR GLY          
SEQRES   7 A  245  ALA ASN ALA ALA LEU LYS VAL ASP ARG GLY HIS GLN ALA          
SEQRES   8 A  245  PRO LEU ALA SER LEU ALA GLY VAL SER ASP TRP GLU SER          
SEQRES   9 A  245  LEU ASN TYR LEU SER ASN ILE THR PRO GLN LYS SER ASP          
SEQRES  10 A  245  LEU ASN GLN GLY ALA TRP ALA ARG LEU GLU ASP GLN GLU          
SEQRES  11 A  245  ARG LYS LEU ILE ASP ARG ALA ASP ILE SER SER VAL TYR          
SEQRES  12 A  245  THR VAL THR GLY PRO LEU TYR GLU ARG ASP MET GLY LYS          
SEQRES  13 A  245  LEU PRO GLY THR GLN LYS ALA HIS THR ILE PRO SER ALA          
SEQRES  14 A  245  TYR TRP LYS VAL ILE PHE ILE ASN ASN SER PRO ALA VAL          
SEQRES  15 A  245  ASN HIS TYR ALA ALA PHE LEU PHE ASP GLN ASN THR PRO          
SEQRES  16 A  245  LYS GLY ALA ASP PHE CYS GLN PHE ARG VAL THR VAL ASP          
SEQRES  17 A  245  GLU ILE GLU LYS ARG THR GLY LEU ILE ILE TRP ALA GLY          
SEQRES  18 A  245  LEU PRO ASP ASP VAL GLN ALA SER LEU LYS SER LYS PRO          
SEQRES  19 A  245  GLY VAL LEU PRO GLU LEU MET GLY CYS LYS ASN                  
SEQRES   1 B  245  ASP THR LEU GLU SER ILE ASP ASN CYS ALA VAL GLY CYS          
SEQRES   2 B  245  PRO THR GLY GLY SER SER ASN VAL SER ILE VAL ARG HIS          
SEQRES   3 B  245  ALA TYR THR LEU ASN ASN ASN SER THR THR LYS PHE ALA          
SEQRES   4 B  245  ASN TRP VAL ALA TYR HIS ILE THR LYS ASP THR PRO ALA          
SEQRES   5 B  245  SER GLY LYS THR ARG ASN TRP LYS THR ASP PRO ALA LEU          
SEQRES   6 B  245  ASN PRO ALA ASP THR LEU ALA PRO ALA ASP TYR THR GLY          
SEQRES   7 B  245  ALA ASN ALA ALA LEU LYS VAL ASP ARG GLY HIS GLN ALA          
SEQRES   8 B  245  PRO LEU ALA SER LEU ALA GLY VAL SER ASP TRP GLU SER          
SEQRES   9 B  245  LEU ASN TYR LEU SER ASN ILE THR PRO GLN LYS SER ASP          
SEQRES  10 B  245  LEU ASN GLN GLY ALA TRP ALA ARG LEU GLU ASP GLN GLU          
SEQRES  11 B  245  ARG LYS LEU ILE ASP ARG ALA ASP ILE SER SER VAL TYR          
SEQRES  12 B  245  THR VAL THR GLY PRO LEU TYR GLU ARG ASP MET GLY LYS          
SEQRES  13 B  245  LEU PRO GLY THR GLN LYS ALA HIS THR ILE PRO SER ALA          
SEQRES  14 B  245  TYR TRP LYS VAL ILE PHE ILE ASN ASN SER PRO ALA VAL          
SEQRES  15 B  245  ASN HIS TYR ALA ALA PHE LEU PHE ASP GLN ASN THR PRO          
SEQRES  16 B  245  LYS GLY ALA ASP PHE CYS GLN PHE ARG VAL THR VAL ASP          
SEQRES  17 B  245  GLU ILE GLU LYS ARG THR GLY LEU ILE ILE TRP ALA GLY          
SEQRES  18 B  245  LEU PRO ASP ASP VAL GLN ALA SER LEU LYS SER LYS PRO          
SEQRES  19 B  245  GLY VAL LEU PRO GLU LEU MET GLY CYS LYS ASN                  
HET     MG  A 251       1                                                       
HET     MG  B 251       1                                                       
HETNAM      MG MAGNESIUM ION                                                    
FORMUL   3   MG    2(MG 2+)                                                     
FORMUL   5  HOH   *251(H2 O)                                                    
HELIX    1   1 PRO A   67  ASP A   69  5                                   3    
HELIX    2   2 PRO A   73  TYR A   76  5                                   4    
HELIX    3   3 ALA A   79  LEU A   83  1                                   5    
HELIX    4   4 LEU A   93  LEU A   96  1                                   4    
HELIX    5   5 TRP A  102  ASN A  106  5                                   5    
HELIX    6   6 LEU A  108  ASN A  110  5                                   3    
HELIX    7   7 SER A  116  ASN A  119  1                                   4    
HELIX    8   8 ALA A  122  LEU A  133  1                                  12    
HELIX    9   9 PHE A  200  PHE A  203  5                                   4    
HELIX   10  10 VAL A  207  THR A  214  1                                   8    
HELIX   11  11 ASP A  224  LEU A  230  1                                   7    
HELIX   12  12 LEU A  237  MET A  241  5                                   5    
HELIX   13  13 PRO B   67  ASP B   69  5                                   3    
HELIX   14  14 PRO B   73  TYR B   76  5                                   4    
HELIX   15  15 ALA B   79  LEU B   83  1                                   5    
HELIX   16  16 LEU B   93  LEU B   96  1                                   4    
HELIX   17  17 TRP B  102  ASN B  106  5                                   5    
HELIX   18  18 LEU B  108  ASN B  110  5                                   3    
HELIX   19  19 SER B  116  ASN B  119  1                                   4    
HELIX   20  20 ALA B  122  LEU B  133  1                                  12    
HELIX   21  21 PHE B  200  PHE B  203  5                                   4    
HELIX   22  22 VAL B  207  THR B  214  1                                   8    
HELIX   23  23 ASP B  224  LEU B  230  1                                   7    
HELIX   24  24 LEU B  237  MET B  241  5                                   5    
SHEET    1   A 6 ILE A  23  VAL A  24  0                                        
SHEET    2   A 6 THR A  29  ASN A  32 -1  O  LEU A  30   N  ILE A  23           
SHEET    3   A 6 ALA A  39  ILE A  46 -1  N  ASN A  40   O  ASN A  31           
SHEET    4   A 6 VAL A 142  LEU A 149 -1  O  VAL A 142   N  ILE A  46           
SHEET    5   A 6 ALA A 169  ILE A 176 -1  O  ALA A 169   N  LEU A 149           
SHEET    6   A 6 TYR A 185  ASP A 191 -1  O  ALA A 186   N  ILE A 174           
SHEET    1   B 2 VAL A  85  HIS A  89  0                                        
SHEET    2   B 2 ILE A 111  LYS A 115 -1  O  THR A 112   N  GLY A  88           
SHEET    1   C 6 ILE B  23  VAL B  24  0                                        
SHEET    2   C 6 THR B  29  ASN B  32 -1  O  LEU B  30   N  ILE B  23           
SHEET    3   C 6 ALA B  39  ILE B  46 -1  N  ASN B  40   O  ASN B  31           
SHEET    4   C 6 VAL B 142  LEU B 149 -1  O  VAL B 142   N  ILE B  46           
SHEET    5   C 6 ALA B 169  ILE B 176 -1  O  ALA B 169   N  LEU B 149           
SHEET    6   C 6 TYR B 185  ASP B 191 -1  O  ALA B 186   N  ILE B 174           
SHEET    1   D 2 VAL B  85  HIS B  89  0                                        
SHEET    2   D 2 ILE B 111  LYS B 115 -1  O  THR B 112   N  GLY B  88           
SSBOND   1 CYS A    9    CYS A   13                          1555   1555  2.03  
SSBOND   2 CYS A  201    CYS A  243                          1555   1555  2.03  
SSBOND   3 CYS B    9    CYS B   13                          1555   1555  2.03  
SSBOND   4 CYS B  201    CYS B  243                          1555   1555  2.03  
LINK         OD1 ASN A 119                MG    MG A 251     1555   1555  2.14  
LINK         OD1 ASN B 119                MG    MG B 251     1555   1555  2.18  
LINK        MG    MG A 251                 O   HOH A 253     1555   1555  2.23  
LINK        MG    MG A 251                 O   HOH A 256     1555   1555  2.16  
LINK        MG    MG A 251                 O   HOH A 254     1555   1555  2.22  
LINK        MG    MG A 251                 O   HOH A 252     1555   1555  2.24  
LINK        MG    MG A 251                 O   HOH A 255     1555   1555  2.29  
LINK        MG    MG B 251                 O   HOH B 255     1555   1555  2.21  
LINK        MG    MG B 251                 O   HOH B 256     1555   1555  2.17  
LINK        MG    MG B 251                 O   HOH B 252     1555   1555  2.19  
LINK        MG    MG B 251                 O   HOH B 254     1555   1555  2.16  
LINK        MG    MG B 251                 O   HOH B 253     1555   1555  2.20  
SITE     1 ASA  9 HIS A  89  GLU A 127  ASN A 119   MG A 251                    
SITE     2 ASA  9 HOH A 252  HOH A 253  HOH A 254  HOH A 255                    
SITE     3 ASA  9 HOH A 256                                                     
SITE     1 ASB  9 HIS B  89  GLU B 127  ASN B 119   MG B 251                    
SITE     2 ASB  9 HOH B 252  HOH B 253  HOH B 254  HOH B 255                    
SITE     3 ASB  9 HOH B 256                                                     
SITE     1 AC1  6 ASN A 119  HOH A 252  HOH A 253  HOH A 254                    
SITE     2 AC1  6 HOH A 255  HOH A 256                                          
SITE     1 AC2  6 ASN B 119  HOH B 252  HOH B 253  HOH B 254                    
SITE     2 AC2  6 HOH B 255  HOH B 256                                          
CRYST1  106.700   74.500   68.900  90.00  90.00  90.00 P 21 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      0.009372  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.013423  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.014514        0.00000                         
MTRIX1   1 -0.999819 -0.018722 -0.003478       -1.08760    1                    
MTRIX2   1 -0.018758  0.999769  0.010535       -0.56390    1                    
MTRIX3   1  0.003280  0.010599 -0.999938      103.23040    1