PDB Short entry for 1DIG
HEADER    OXIDOREDUCTASE,HYDROLASE                29-NOV-99   1DIG              
TITLE     HUMAN METHYLENETETRAHYDROFOLATE DEHYDROGENASE / CYCLOHYDROLASE        
TITLE    2 COMPLEXED WITH NADP AND INHIBITOR LY374571                           
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: METHYLENETETRAHYDROFOLATE DEHYDROGENASE / CYCLOHYDROLASE;  
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 SYNONYM: DC301;                                                      
COMPND   5 EC: 1.5.1.5, 3.5.4.9;                                                
COMPND   6 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   3 ORGANISM_COMMON: HUMAN;                                              
SOURCE   4 ORGANISM_TAXID: 9606;                                                
SOURCE   5 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   6 EXPRESSION_SYSTEM_TAXID: 562                                         
KEYWDS    TETRAHYDROFOLATE, DEHYDROGENASE, CYCLOHYDROLASE, NADP, INHIBITOR,     
KEYWDS   2 ROSSMANN FOLD, OXIDOREDUCTASE, HYDROLASE                             
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    A.SCHMIDT,H.WU,R.E.MACKENZIE,V.J.CHEN,J.R.BEWLY,J.E.RAY,J.E.TOTH,     
AUTHOR   2 M.CYGLER                                                             
REVDAT   4   07-FEB-24 1DIG    1       REMARK                                   
REVDAT   3   31-JAN-18 1DIG    1       REMARK                                   
REVDAT   2   24-FEB-09 1DIG    1       VERSN                                    
REVDAT   1   05-JUL-00 1DIG    0                                                
JRNL        AUTH   A.SCHMIDT,H.WU,R.E.MACKENZIE,V.J.CHEN,J.R.BEWLY,J.E.RAY,     
JRNL        AUTH 2 J.E.TOTH,M.CYGLER                                            
JRNL        TITL   STRUCTURES OF THREE INHIBITOR COMPLEXES PROVIDE INSIGHT INTO 
JRNL        TITL 2 THE REACTION MECHANISM OF THE HUMAN                          
JRNL        TITL 3 METHYLENETETRAHYDROFOLATE DEHYDROGENASE/CYCLOHYDROLASE.      
JRNL        REF    BIOCHEMISTRY                  V.  39  6325 2000              
JRNL        REFN                   ISSN 0006-2960                               
JRNL        PMID   10828945                                                     
JRNL        DOI    10.1021/BI992734Y                                            
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   M.ALLAIRE,Y.LI,R.E.MACKENZIE,M.CYGLER                        
REMARK   1  TITL   THE 3-D STRUCTURE OF A FOLATE-DEPENDENT                      
REMARK   1  TITL 2 DEHYDROGENASE/CYCLOHYDROLASE BIFUNCTIONAL ENZYME AT 1.5 A    
REMARK   1  TITL 3 RESOLUTION                                                   
REMARK   1  REF    STRUCTURE                     V.   6   173 1998              
REMARK   1  REFN                   ISSN 0969-2126                               
REMARK   1  DOI    10.1016/S0969-2126(98)00019-7                                
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.20 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS                                                  
REMARK   3   AUTHORS     : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE-              
REMARK   3               : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU,              
REMARK   3               : READ,RICE,SIMONSON,WARREN                            
REMARK   3                                                                      
REMARK   3  REFINEMENT TARGET : ENGH & HUBER                                    
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.20                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 15.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : NULL                           
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 99.8                           
REMARK   3   NUMBER OF REFLECTIONS             : 29650                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : NULL                            
REMARK   3   FREE R VALUE TEST SET SELECTION  : RANDOM                          
REMARK   3   R VALUE            (WORKING SET) : 0.226                           
REMARK   3   FREE R VALUE                     : 0.267                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : NULL                            
REMARK   3   FREE R VALUE TEST SET COUNT      : 2900                            
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            : 4396                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 131                                     
REMARK   3   SOLVENT ATOMS            : 218                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : NULL                           
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 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) : NULL                            
REMARK   3   ESD FROM SIGMAA              (A) : NULL                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : NULL                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : NULL                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : NULL                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : NULL                            
REMARK   3   BOND ANGLES            (DEGREES) : NULL                            
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : NULL                            
REMARK   3   IMPROPER ANGLES        (DEGREES) : NULL                            
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : NULL                                      
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : NULL                                                 
REMARK   3   KSOL        : NULL                                                 
REMARK   3   BSOL        : NULL                                                 
REMARK   3                                                                      
REMARK   3  NCS MODEL : NULL                                                    
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS.                         RMS   SIGMA/WEIGHT          
REMARK   3   GROUP  1  POSITIONAL            (A) : NULL  ; NULL                 
REMARK   3   GROUP  1  B-FACTOR           (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  PARAMETER FILE  1  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: BULK SOLVENT CORRECTION APPLIED           
REMARK   4                                                                      
REMARK   4 1DIG COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 13-DEC-99.                  
REMARK 100 THE DEPOSITION ID IS D_1000010112.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 30-MAR-99                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 5.2                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : NSLS                               
REMARK 200  BEAMLINE                       : X8C                                
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.000                              
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 4                     
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 29810                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.200                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 15.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : -3.000                             
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.8                               
REMARK 200  DATA REDUNDANCY                : 4.000                              
REMARK 200  R MERGE                    (I) : 0.04400                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 7.0000                             
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.20                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.23                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 98.2                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 5.00                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.14700                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL                         
REMARK 200 SOFTWARE USED: CNS                                                   
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 42.45                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.14                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 3350, GLYCEROL, SODIUM CITRATE,      
REMARK 280  AMMONIUM ACETATE, PH 5.2, VAPOR DIFFUSION, HANGING DROP,            
REMARK 280  TEMPERATURE 20K, TEMPERATURE 293.0K                                 
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21                       
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X+1/2,-Y,Z+1/2                                         
REMARK 290       3555   -X,Y+1/2,-Z+1/2                                         
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       33.94450            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       30.78950            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       68.20950            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       30.78950            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       33.94450            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       68.20950            
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: DC301 FORMS DIMERS, THE TWO MONOMERS (CHAINS A AND B) BEING  
REMARK 300 RELATED BY A NONCRYSTALLOGRAPHIC TWOFOLD AXIS IN THE CRYSTAL         
REMARK 300 STRUCTURE.                                                           
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: 6000 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 24120 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -19.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B                                  
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 465                                                                      
REMARK 465 MISSING RESIDUES                                                     
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                       
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                
REMARK 465                                                                      
REMARK 465   M RES C SSSEQI                                                     
REMARK 465     MET A     1                                                      
REMARK 465     VAL A   241                                                      
REMARK 465     PRO A   242                                                      
REMARK 465     ASP A   243                                                      
REMARK 465     ASP A   244                                                      
REMARK 465     LYS A   245                                                      
REMARK 465     LYS A   246                                                      
REMARK 465     PRO A   247                                                      
REMARK 465     ASN A   248                                                      
REMARK 465     GLY A   249                                                      
REMARK 465     ARG A   250                                                      
REMARK 465     LYS A   297                                                      
REMARK 465     PHE A   298                                                      
REMARK 465     LYS A   299                                                      
REMARK 465     PRO A   300                                                      
REMARK 465     GLY A   301                                                      
REMARK 465     LYS A   302                                                      
REMARK 465     TRP A   303                                                      
REMARK 465     MET A   304                                                      
REMARK 465     ILE A   305                                                      
REMARK 465     GLN A   306                                                      
REMARK 465     MET B  1001                                                      
REMARK 465     LYS B  1297                                                      
REMARK 465     PHE B  1298                                                      
REMARK 465     LYS B  1299                                                      
REMARK 465     PRO B  1300                                                      
REMARK 465     GLY B  1301                                                      
REMARK 465     LYS B  1302                                                      
REMARK 465     TRP B  1303                                                      
REMARK 465     MET B  1304                                                      
REMARK 465     ILE B  1305                                                      
REMARK 465     GLN B  1306                                                      
REMARK 480                                                                      
REMARK 480 ZERO OCCUPANCY ATOM                                                  
REMARK 480 THE FOLLOWING RESIDUES HAVE ATOMS MODELED WITH ZERO                  
REMARK 480 OCCUPANCY. THE LOCATION AND PROPERTIES OF THESE ATOMS                
REMARK 480 MAY NOT BE RELIABLE. (M=MODEL NUMBER; RES=RESIDUE NAME;              
REMARK 480 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE):         
REMARK 480   M RES C SSEQI ATOMS                                                
REMARK 480     LYS A   83   CG   CD   CE   NZ                                   
REMARK 480     GLU A  296   CG   CD   OE1  OE2                                  
REMARK 480     GLU B 1296   CG   CD   OE1  OE2                                  
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    ASN A  45       47.46   -148.67                                   
REMARK 500    VAL A 177      -66.36   -125.36                                   
REMARK 500    ASN B1045       44.23   -148.06                                   
REMARK 500    ARG B1173       34.43   -143.16                                   
REMARK 500    VAL B1177      -73.07   -127.25                                   
REMARK 500    ALA B1215       80.15   -150.13                                   
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 ACT B 4000                
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NAP A 2001                
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NAP B 2002                
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE L37 A 3001                
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1A4I   RELATED DB: PDB                                   
REMARK 900 STRUCTURE OF THE NATIVE HUMAN METHYLENETETRAHYDROFOLATE              
REMARK 900 DEHYDROGENASE / CYCLOHYDROLASE (DC301) COMPLEXED WITH THE COFACTOR   
REMARK 900 NADP                                                                 
REMARK 900 RELATED ID: 1DIA   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1DIB   RELATED DB: PDB                                   
DBREF  1DIG A    1   306  UNP    P11586   C1TC_HUMAN       1    306             
DBREF  1DIG B 1001  1306  UNP    P11586   C1TC_HUMAN       1    306             
SEQRES   1 A  306  MET ALA PRO ALA GLU ILE LEU ASN GLY LYS GLU ILE SER          
SEQRES   2 A  306  ALA GLN ILE ARG ALA ARG LEU LYS ASN GLN VAL THR GLN          
SEQRES   3 A  306  LEU LYS GLU GLN VAL PRO GLY PHE THR PRO ARG LEU ALA          
SEQRES   4 A  306  ILE LEU GLN VAL GLY ASN ARG ASP ASP SER ASN LEU TYR          
SEQRES   5 A  306  ILE ASN VAL LYS LEU LYS ALA ALA GLU GLU ILE GLY ILE          
SEQRES   6 A  306  LYS ALA THR HIS ILE LYS LEU PRO ARG THR THR THR GLU          
SEQRES   7 A  306  SER GLU VAL MET LYS TYR ILE THR SER LEU ASN GLU ASP          
SEQRES   8 A  306  SER THR VAL HIS GLY PHE LEU VAL GLN LEU PRO LEU ASP          
SEQRES   9 A  306  SER GLU ASN SER ILE ASN THR GLU GLU VAL ILE ASN ALA          
SEQRES  10 A  306  ILE ALA PRO GLU LYS ASP VAL ASP GLY LEU THR SER ILE          
SEQRES  11 A  306  ASN ALA GLY ARG LEU ALA ARG GLY ASP LEU ASN ASP CYS          
SEQRES  12 A  306  PHE ILE PRO CYS THR PRO LYS GLY CYS LEU GLU LEU ILE          
SEQRES  13 A  306  LYS GLU THR GLY VAL PRO ILE ALA GLY ARG HIS ALA VAL          
SEQRES  14 A  306  VAL VAL GLY ARG SER LYS ILE VAL GLY ALA PRO MET HIS          
SEQRES  15 A  306  ASP LEU LEU LEU TRP ASN ASN ALA THR VAL THR THR CYS          
SEQRES  16 A  306  HIS SER LYS THR ALA HIS LEU ASP GLU GLU VAL ASN LYS          
SEQRES  17 A  306  GLY ASP ILE LEU VAL VAL ALA THR GLY GLN PRO GLU MET          
SEQRES  18 A  306  VAL LYS GLY GLU TRP ILE LYS PRO GLY ALA ILE VAL ILE          
SEQRES  19 A  306  ASP CYS GLY ILE ASN TYR VAL PRO ASP ASP LYS LYS PRO          
SEQRES  20 A  306  ASN GLY ARG LYS VAL VAL GLY ASP VAL ALA TYR ASP GLU          
SEQRES  21 A  306  ALA LYS GLU ARG ALA SER PHE ILE THR PRO VAL PRO GLY          
SEQRES  22 A  306  GLY VAL GLY PRO MET THR VAL ALA MET LEU MET GLN SER          
SEQRES  23 A  306  THR VAL GLU SER ALA LYS ARG PHE LEU GLU LYS PHE LYS          
SEQRES  24 A  306  PRO GLY LYS TRP MET ILE GLN                                  
SEQRES   1 B  306  MET ALA PRO ALA GLU ILE LEU ASN GLY LYS GLU ILE SER          
SEQRES   2 B  306  ALA GLN ILE ARG ALA ARG LEU LYS ASN GLN VAL THR GLN          
SEQRES   3 B  306  LEU LYS GLU GLN VAL PRO GLY PHE THR PRO ARG LEU ALA          
SEQRES   4 B  306  ILE LEU GLN VAL GLY ASN ARG ASP ASP SER ASN LEU TYR          
SEQRES   5 B  306  ILE ASN VAL LYS LEU LYS ALA ALA GLU GLU ILE GLY ILE          
SEQRES   6 B  306  LYS ALA THR HIS ILE LYS LEU PRO ARG THR THR THR GLU          
SEQRES   7 B  306  SER GLU VAL MET LYS TYR ILE THR SER LEU ASN GLU ASP          
SEQRES   8 B  306  SER THR VAL HIS GLY PHE LEU VAL GLN LEU PRO LEU ASP          
SEQRES   9 B  306  SER GLU ASN SER ILE ASN THR GLU GLU VAL ILE ASN ALA          
SEQRES  10 B  306  ILE ALA PRO GLU LYS ASP VAL ASP GLY LEU THR SER ILE          
SEQRES  11 B  306  ASN ALA GLY ARG LEU ALA ARG GLY ASP LEU ASN ASP CYS          
SEQRES  12 B  306  PHE ILE PRO CYS THR PRO LYS GLY CYS LEU GLU LEU ILE          
SEQRES  13 B  306  LYS GLU THR GLY VAL PRO ILE ALA GLY ARG HIS ALA VAL          
SEQRES  14 B  306  VAL VAL GLY ARG SER LYS ILE VAL GLY ALA PRO MET HIS          
SEQRES  15 B  306  ASP LEU LEU LEU TRP ASN ASN ALA THR VAL THR THR CYS          
SEQRES  16 B  306  HIS SER LYS THR ALA HIS LEU ASP GLU GLU VAL ASN LYS          
SEQRES  17 B  306  GLY ASP ILE LEU VAL VAL ALA THR GLY GLN PRO GLU MET          
SEQRES  18 B  306  VAL LYS GLY GLU TRP ILE LYS PRO GLY ALA ILE VAL ILE          
SEQRES  19 B  306  ASP CYS GLY ILE ASN TYR VAL PRO ASP ASP LYS LYS PRO          
SEQRES  20 B  306  ASN GLY ARG LYS VAL VAL GLY ASP VAL ALA TYR ASP GLU          
SEQRES  21 B  306  ALA LYS GLU ARG ALA SER PHE ILE THR PRO VAL PRO GLY          
SEQRES  22 B  306  GLY VAL GLY PRO MET THR VAL ALA MET LEU MET GLN SER          
SEQRES  23 B  306  THR VAL GLU SER ALA LYS ARG PHE LEU GLU LYS PHE LYS          
SEQRES  24 B  306  PRO GLY LYS TRP MET ILE GLN                                  
HET    NAP  A2001      48                                                       
HET    L37  A3001      31                                                       
HET    ACT  B4000       4                                                       
HET    NAP  B2002      48                                                       
HETNAM     NAP NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE                 
HETNAM     L37 [[N'-(2,5-DIAMINO-6-HYDROXY-PYRIMIDIN-4-YL)-UREAYL]-             
HETNAM   2 L37  PHEN-4-YL]-CARBONYL-GLUTAMIC ACID                               
HETNAM     ACT ACETATE ION                                                      
HETSYN     NAP 2'-MONOPHOSPHOADENOSINE 5'-DIPHOSPHORIBOSE                       
HETSYN     L37 LY374571                                                         
FORMUL   3  NAP    2(C21 H28 N7 O17 P3)                                         
FORMUL   4  L37    C17 H19 N7 O7                                                
FORMUL   5  ACT    C2 H3 O2 1-                                                  
FORMUL   7  HOH   *218(H2 O)                                                    
HELIX    1   1 ASN A    8  VAL A   31  1                                  24    
HELIX    2   2 ARG A   46  GLY A   64  1                                  19    
HELIX    3   3 THR A   77  ASP A   91  1                                  15    
HELIX    4   4 ASN A  110  ASN A  116  1                                   7    
HELIX    5   5 ALA A  117  ILE A  118  5                                   2    
HELIX    6   6 ALA A  119  LYS A  122  5                                   4    
HELIX    7   7 THR A  128  ARG A  137  1                                  10    
HELIX    8   8 PRO A  146  GLU A  158  1                                  13    
HELIX    9   9 VAL A  177  TRP A  187  1                                  11    
HELIX   10  10 HIS A  201  ASN A  207  1                                   7    
HELIX   11  11 ALA A  257  LYS A  262  1                                   6    
HELIX   12  12 GLY A  274  GLU A  296  1                                  23    
HELIX   13  13 ASN B 1008  VAL B 1031  1                                  24    
HELIX   14  14 ARG B 1046  GLY B 1064  1                                  19    
HELIX   15  15 THR B 1077  ASP B 1091  1                                  15    
HELIX   16  16 ASN B 1110  ASN B 1116  1                                   7    
HELIX   17  17 ALA B 1117  ILE B 1118  5                                   2    
HELIX   18  18 ALA B 1119  LYS B 1122  5                                   4    
HELIX   19  19 THR B 1128  ARG B 1137  1                                  10    
HELIX   20  20 PRO B 1146  GLU B 1158  1                                  13    
HELIX   21  21 VAL B 1177  TRP B 1187  1                                  11    
HELIX   22  22 HIS B 1201  ASN B 1207  1                                   7    
HELIX   23  23 ALA B 1257  LYS B 1262  1                                   6    
HELIX   24  24 VAL B 1275  PRO B 1277  5                                   3    
HELIX   25  25 MET B 1278  GLU B 1296  1                                  19    
SHEET    1   A12 GLU A   5  ILE A   6  0                                        
SHEET    2   A12 PHE A 267  ILE A 268  1  N  ILE A 268   O  GLU A   5           
SHEET    3   A12 ILE A 232  ASP A 235  1  N  VAL A 233   O  PHE A 267           
SHEET    4   A12 ILE A 211  VAL A 214  1  O  LEU A 212   N  ILE A 234           
SHEET    5   A12 HIS A 167  VAL A 171  1  O  HIS A 167   N  ILE A 211           
SHEET    6   A12 THR A 191  CYS A 195  1  O  THR A 191   N  ALA A 168           
SHEET    7   A12 THR B1191  CYS B1195 -1  O  VAL B1192   N  THR A 194           
SHEET    8   A12 HIS B1167  VAL B1171  1  N  ALA B1168   O  THR B1191           
SHEET    9   A12 ILE B1211  VAL B1214  1  O  ILE B1211   N  VAL B1169           
SHEET   10   A12 ILE B1232  ASP B1235  1  O  ILE B1232   N  LEU B1212           
SHEET   11   A12 PHE B1267  ILE B1268  1  O  PHE B1267   N  VAL B1233           
SHEET   12   A12 GLU B1005  ILE B1006  1  O  GLU B1005   N  ILE B1268           
SHEET    1   B 3 LYS A  66  LEU A  72  0                                        
SHEET    2   B 3 ARG A  37  VAL A  43  1  N  LEU A  38   O  LYS A  66           
SHEET    3   B 3 GLY A  96  VAL A  99  1  O  GLY A  96   N  ALA A  39           
SHEET    1   C 3 LYS B1066  LEU B1072  0                                        
SHEET    2   C 3 ARG B1037  VAL B1043  1  N  LEU B1038   O  LYS B1066           
SHEET    3   C 3 GLY B1096  VAL B1099  1  N  GLY B1096   O  ARG B1037           
SHEET    1   D 2 ASN B1239  PRO B1242  0                                        
SHEET    2   D 2 ARG B1250  VAL B1253 -1  N  LYS B1251   O  VAL B1241           
CISPEP   1 LEU A  101    PRO A  102          0         0.39                     
CISPEP   2 VAL A  271    PRO A  272          0         0.07                     
CISPEP   3 LEU B 1101    PRO B 1102          0         0.02                     
CISPEP   4 VAL B 1271    PRO B 1272          0        -0.62                     
SITE     1 AC1  5 PRO A 162  GLN B1023  GLU B1289  LYS B1292                    
SITE     2 AC1  5 HOH B4208                                                     
SITE     1 AC2 20 THR A 148  ARG A 173  SER A 174  HIS A 196                    
SITE     2 AC2 20 SER A 197  LEU A 202  ALA A 215  THR A 216                    
SITE     3 AC2 20 GLY A 217  GLN A 218  MET A 221  CYS A 236                    
SITE     4 AC2 20 ILE A 238  GLY A 276  THR A 279  L37 A3001                    
SITE     5 AC2 20 HOH A4011  HOH A4111  HOH A4112  HOH A4163                    
SITE     1 AC3 22 THR B1148  GLY B1172  ARG B1173  SER B1174                    
SITE     2 AC3 22 HIS B1196  SER B1197  ALA B1215  THR B1216                    
SITE     3 AC3 22 GLY B1217  GLN B1218  MET B1221  CYS B1236                    
SITE     4 AC3 22 ILE B1238  GLY B1276  THR B1279  HOH B4025                    
SITE     5 AC3 22 HOH B4026  HOH B4087  HOH B4088  HOH B4107                    
SITE     6 AC3 22 HOH B4198  HOH B4201                                          
SITE     1 AC4  9 LYS A  56  LEU A 101  ILE A 238  GLY A 273                    
SITE     2 AC4  9 GLY A 274  GLY A 276  PRO A 277  NAP A2001                    
SITE     3 AC4  9 HOH A4012                                                     
CRYST1   67.889  136.419   61.579  90.00  90.00  90.00 P 21 21 21    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      0.014730  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.007330  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.016239        0.00000