PDB Short entry for 2HD1
HEADER    HYDROLASE                               19-JUN-06   2HD1              
TITLE     CRYSTAL STRUCTURE OF PDE9 IN COMPLEX WITH IBMX                        
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: PHOSPHODIESTERASE 9A;                                      
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 FRAGMENT: CATALYTIC DOMAIN (RESIDUES 181-506);                       
COMPND   5 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   3 ORGANISM_COMMON: HUMAN;                                              
SOURCE   4 ORGANISM_TAXID: 9606;                                                
SOURCE   5 GENE: PDE;                                                           
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21;                            
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 511693;                                     
SOURCE   8 EXPRESSION_SYSTEM_STRAIN: BL21;                                      
SOURCE   9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  10 EXPRESSION_SYSTEM_PLASMID: PET15B                                    
KEYWDS    CGMP, PDE9, IBMX, HYDROLASE                                           
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    Q.HUAI,H.WANG,W.ZHANG,R.W.COLMAN,H.ROBINSON,H.KE                      
REVDAT   2   24-FEB-09 2HD1    1       VERSN                                    
REVDAT   1   27-JUN-06 2HD1    0                                                
SPRSDE     27-JUN-06 2HD1      1TBM                                             
JRNL        AUTH   Q.HUAI,H.WANG,W.ZHANG,R.W.COLMAN,H.ROBINSON,H.KE             
JRNL        TITL   CRYSTAL STRUCTURE OF PHOSPHODIESTERASE 9 SHOWS               
JRNL        TITL 2 ORIENTATION VARIATION OF INHIBITOR IBMX BINDING              
JRNL        REF    PROC.NATL.ACAD.SCI.USA        V. 101  9624 2004              
JRNL        REFN                   ISSN 0027-8424                               
JRNL        PMID   15210993                                                     
JRNL        DOI    10.1073/PNAS.0401120101                                      
REMARK   1                                                                      
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.23 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS 1.0                                              
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) : 2.23                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 30.00                          
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)   (%) : NULL                           
REMARK   3   NUMBER OF REFLECTIONS             : 67397                          
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) : 0.215                           
REMARK   3   FREE R VALUE                     : 0.231                           
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            : 5390                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 36                                      
REMARK   3   SOLVENT ATOMS            : 195                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 35.80                          
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) : 0.006                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.20                            
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : NULL                            
REMARK   3   IMPROPER ANGLES        (DEGREES) : NULL                            
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : ISOTROPIC                                 
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: NULL                                      
REMARK   4                                                                      
REMARK   4 2HD1 COMPLIES WITH FORMAT V. 3.15, 01-DEC-08                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 20-JUN-06.                  
REMARK 100 THE RCSB ID CODE IS RCSB038212.                                      
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : NULL                               
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 7.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : NSLS                               
REMARK 200  BEAMLINE                       : X12C                               
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.1                                
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 : ADSC, DENZO                        
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 70925                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.230                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 30.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : NULL                               
REMARK 200  DATA REDUNDANCY                : 6.700                              
REMARK 200  R MERGE                    (I) : 0.07200                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 27.8000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.23                     
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) : 0.48900                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 3.000                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: AMORE                                                 
REMARK 200 STARTING MODEL: PDE4                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 73.74                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 4.68                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: THE PROTEIN DROPS CONTAIN 3 MICROL       
REMARK 280  PDE9A2-IBMX COMPLEX AND 1 MICROL WELL BUFFER OF 0.1 M HEPES,        
REMARK 280  2.2 M NA FORMATE, AND 5% XYLITOL, PH 7.5, VAPOR DIFFUSION,          
REMARK 280  HANGING DROP, TEMPERATURE 277K                                      
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 41 21 2                        
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,-Y,Z+1/2                                             
REMARK 290       3555   -Y+1/2,X+1/2,Z+1/4                                      
REMARK 290       4555   Y+1/2,-X+1/2,Z+3/4                                      
REMARK 290       5555   -X+1/2,Y+1/2,-Z+1/4                                     
REMARK 290       6555   X+1/2,-Y+1/2,-Z+3/4                                     
REMARK 290       7555   Y,X,-Z                                                  
REMARK 290       8555   -Y,-X,-Z+1/2                                            
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      134.86350            
REMARK 290   SMTRY1   3  0.000000 -1.000000  0.000000       51.75650            
REMARK 290   SMTRY2   3  1.000000  0.000000  0.000000       51.75650            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000       67.43175            
REMARK 290   SMTRY1   4  0.000000  1.000000  0.000000       51.75650            
REMARK 290   SMTRY2   4 -1.000000  0.000000  0.000000       51.75650            
REMARK 290   SMTRY3   4  0.000000  0.000000  1.000000      202.29525            
REMARK 290   SMTRY1   5 -1.000000  0.000000  0.000000       51.75650            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       51.75650            
REMARK 290   SMTRY3   5  0.000000  0.000000 -1.000000       67.43175            
REMARK 290   SMTRY1   6  1.000000  0.000000  0.000000       51.75650            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       51.75650            
REMARK 290   SMTRY3   6  0.000000  0.000000 -1.000000      202.29525            
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      134.86350            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1, 2                                                    
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC                         
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A                                     
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 2                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC                         
REMARK 350 APPLY THE FOLLOWING TO CHAINS: B                                     
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 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 300     -178.11    -67.76                                   
REMARK 500    SER A 319       60.29     28.31                                   
REMARK 500    ASN A 381       66.99   -163.29                                   
REMARK 500    PHE A 441        1.79    -68.62                                   
REMARK 500    VAL A 460      -61.42   -126.53                                   
REMARK 500    GLN A 504     -168.05   -101.91                                   
REMARK 500    LYS A 505       81.06     58.71                                   
REMARK 500    PRO B 199       -9.38    -57.61                                   
REMARK 500    ASP B 317       10.55     59.98                                   
REMARK 500    SER B 319       59.91     27.55                                   
REMARK 500    ASN B 381       63.70   -151.92                                   
REMARK 500    LYS B 505       44.51   -164.22                                   
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                              ZN A 101  ZN                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HIS A 256   NE2                                                    
REMARK 620 2 ASP A 402   OD1  88.5                                              
REMARK 620 3 HOH A 507   O    85.9  83.3                                        
REMARK 620 4 HIS A 292   NE2  87.4  88.8 169.8                                  
REMARK 620 5 ASP A 293   OD2  86.4 166.1 109.2  78.0                            
REMARK 620 N                    1     2     3     4                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG A 102  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HOH A 509   O                                                      
REMARK 620 2 ASP A 293   OD1 172.3                                              
REMARK 620 3 HOH A 510   O    86.4  94.4                                        
REMARK 620 4 HOH A 511   O    83.2  89.2  97.5                                  
REMARK 620 5 HOH A 508   O    92.8  94.8  74.3 171.1                            
REMARK 620 N                    1     2     3     4                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              ZN B 101  ZN                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 ASP B 402   OD1                                                    
REMARK 620 2 ASP B 293   OD2 166.2                                              
REMARK 620 3 HIS B 292   NE2  86.4  79.9                                        
REMARK 620 4 HIS B 256   NE2  88.0  91.4  93.6                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG B 102  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HOH B 508   O                                                      
REMARK 620 2 HOH B 511   O   172.4                                              
REMARK 620 3 HOH B 509   O    86.5  86.0                                        
REMARK 620 4 HOH B 510   O    88.9  91.7  88.1                                  
REMARK 620 5 ASP B 293   OD1 112.2  75.3 161.3  92.9                            
REMARK 620 N                    1     2     3     4                             
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 101                  
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 102                  
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN B 101                  
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG B 102                  
REMARK 800 SITE_IDENTIFIER: AC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE IBM A 1                   
REMARK 800 SITE_IDENTIFIER: AC6                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE IBM B 1                   
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1TBM   RELATED DB: PDB                                   
DBREF  2HD1 A  181   506  UNP    Q53Y40   Q53Y40_HUMAN   181    506             
DBREF  2HD1 B  181   506  UNP    Q53Y40   Q53Y40_HUMAN   181    506             
SEQRES   1 A  326  PRO THR TYR PRO LYS TYR LEU LEU SER PRO GLU THR ILE          
SEQRES   2 A  326  GLU ALA LEU ARG LYS PRO THR PHE ASP VAL TRP LEU TRP          
SEQRES   3 A  326  GLU PRO ASN GLU MET LEU SER CYS LEU GLU HIS MET TYR          
SEQRES   4 A  326  HIS ASP LEU GLY LEU VAL ARG ASP PHE SER ILE ASN PRO          
SEQRES   5 A  326  VAL THR LEU ARG ARG TRP LEU PHE CYS VAL HIS ASP ASN          
SEQRES   6 A  326  TYR ARG ASN ASN PRO PHE HIS ASN PHE ARG HIS CYS PHE          
SEQRES   7 A  326  CYS VAL ALA GLN MET MET TYR SER MET VAL TRP LEU CYS          
SEQRES   8 A  326  SER LEU GLN GLU LYS PHE SER GLN THR ASP ILE LEU ILE          
SEQRES   9 A  326  LEU MET THR ALA ALA ILE CYS HIS ASP LEU ASP HIS PRO          
SEQRES  10 A  326  GLY TYR ASN ASN THR TYR GLN ILE ASN ALA ARG THR GLU          
SEQRES  11 A  326  LEU ALA VAL ARG TYR ASN ASP ILE SER PRO LEU GLU ASN          
SEQRES  12 A  326  HIS HIS CYS ALA VAL ALA PHE GLN ILE LEU ALA GLU PRO          
SEQRES  13 A  326  GLU CYS ASN ILE PHE SER ASN ILE PRO PRO ASP GLY PHE          
SEQRES  14 A  326  LYS GLN ILE ARG GLN GLY MET ILE THR LEU ILE LEU ALA          
SEQRES  15 A  326  THR ASP MET ALA ARG HIS ALA GLU ILE MET ASP SER PHE          
SEQRES  16 A  326  LYS GLU LYS MET GLU ASN PHE ASP TYR SER ASN GLU GLU          
SEQRES  17 A  326  HIS MET THR LEU LEU LYS MET ILE LEU ILE LYS CYS CYS          
SEQRES  18 A  326  ASP ILE SER ASN GLU VAL ARG PRO MET GLU VAL ALA GLU          
SEQRES  19 A  326  PRO TRP VAL ASP CYS LEU LEU GLU GLU TYR PHE MET GLN          
SEQRES  20 A  326  SER ASP ARG GLU LYS SER GLU GLY LEU PRO VAL ALA PRO          
SEQRES  21 A  326  PHE MET ASP ARG ASP LYS VAL THR LYS ALA THR ALA GLN          
SEQRES  22 A  326  ILE GLY PHE ILE LYS PHE VAL LEU ILE PRO MET PHE GLU          
SEQRES  23 A  326  THR VAL THR LYS LEU PHE PRO MET VAL GLU GLU ILE MET          
SEQRES  24 A  326  LEU GLN PRO LEU TRP GLU SER ARG ASP ARG TYR GLU GLU          
SEQRES  25 A  326  LEU LYS ARG ILE ASP ASP ALA MET LYS GLU LEU GLN LYS          
SEQRES  26 A  326  LYS                                                          
SEQRES   1 B  326  PRO THR TYR PRO LYS TYR LEU LEU SER PRO GLU THR ILE          
SEQRES   2 B  326  GLU ALA LEU ARG LYS PRO THR PHE ASP VAL TRP LEU TRP          
SEQRES   3 B  326  GLU PRO ASN GLU MET LEU SER CYS LEU GLU HIS MET TYR          
SEQRES   4 B  326  HIS ASP LEU GLY LEU VAL ARG ASP PHE SER ILE ASN PRO          
SEQRES   5 B  326  VAL THR LEU ARG ARG TRP LEU PHE CYS VAL HIS ASP ASN          
SEQRES   6 B  326  TYR ARG ASN ASN PRO PHE HIS ASN PHE ARG HIS CYS PHE          
SEQRES   7 B  326  CYS VAL ALA GLN MET MET TYR SER MET VAL TRP LEU CYS          
SEQRES   8 B  326  SER LEU GLN GLU LYS PHE SER GLN THR ASP ILE LEU ILE          
SEQRES   9 B  326  LEU MET THR ALA ALA ILE CYS HIS ASP LEU ASP HIS PRO          
SEQRES  10 B  326  GLY TYR ASN ASN THR TYR GLN ILE ASN ALA ARG THR GLU          
SEQRES  11 B  326  LEU ALA VAL ARG TYR ASN ASP ILE SER PRO LEU GLU ASN          
SEQRES  12 B  326  HIS HIS CYS ALA VAL ALA PHE GLN ILE LEU ALA GLU PRO          
SEQRES  13 B  326  GLU CYS ASN ILE PHE SER ASN ILE PRO PRO ASP GLY PHE          
SEQRES  14 B  326  LYS GLN ILE ARG GLN GLY MET ILE THR LEU ILE LEU ALA          
SEQRES  15 B  326  THR ASP MET ALA ARG HIS ALA GLU ILE MET ASP SER PHE          
SEQRES  16 B  326  LYS GLU LYS MET GLU ASN PHE ASP TYR SER ASN GLU GLU          
SEQRES  17 B  326  HIS MET THR LEU LEU LYS MET ILE LEU ILE LYS CYS CYS          
SEQRES  18 B  326  ASP ILE SER ASN GLU VAL ARG PRO MET GLU VAL ALA GLU          
SEQRES  19 B  326  PRO TRP VAL ASP CYS LEU LEU GLU GLU TYR PHE MET GLN          
SEQRES  20 B  326  SER ASP ARG GLU LYS SER GLU GLY LEU PRO VAL ALA PRO          
SEQRES  21 B  326  PHE MET ASP ARG ASP LYS VAL THR LYS ALA THR ALA GLN          
SEQRES  22 B  326  ILE GLY PHE ILE LYS PHE VAL LEU ILE PRO MET PHE GLU          
SEQRES  23 B  326  THR VAL THR LYS LEU PHE PRO MET VAL GLU GLU ILE MET          
SEQRES  24 B  326  LEU GLN PRO LEU TRP GLU SER ARG ASP ARG TYR GLU GLU          
SEQRES  25 B  326  LEU LYS ARG ILE ASP ASP ALA MET LYS GLU LEU GLN LYS          
SEQRES  26 B  326  LYS                                                          
HET     ZN  A 101       1                                                       
HET     MG  A 102       1                                                       
HET     ZN  B 101       1                                                       
HET     MG  B 102       1                                                       
HET    IBM  A   1      16                                                       
HET    IBM  B   1      16                                                       
HETNAM      ZN ZINC ION                                                         
HETNAM      MG MAGNESIUM ION                                                    
HETNAM     IBM 3-ISOBUTYL-1-METHYLXANTHINE                                      
FORMUL   3   ZN    2(ZN 2+)                                                     
FORMUL   4   MG    2(MG 2+)                                                     
FORMUL   7  IBM    2(C10 H14 N4 O2)                                             
FORMUL   9  HOH   *195(H2 O)                                                    
HELIX    1   1 SER A  189  LEU A  196  1                                   8    
HELIX    2   2 GLU A  207  LEU A  222  1                                  16    
HELIX    3   3 GLY A  223  PHE A  228  1                                   6    
HELIX    4   4 ASN A  231  ASN A  245  1                                  15    
HELIX    5   5 ASN A  253  CYS A  271  1                                  19    
HELIX    6   6 SER A  272  PHE A  277  1                                   6    
HELIX    7   7 SER A  278  HIS A  292  1                                  15    
HELIX    8   8 ASN A  300  ALA A  307  1                                   8    
HELIX    9   9 THR A  309  TYR A  315  1                                   7    
HELIX   10  10 SER A  319  ALA A  334  1                                  16    
HELIX   11  11 GLU A  335  ASN A  339  5                                   5    
HELIX   12  12 PRO A  345  ALA A  362  1                                  18    
HELIX   13  13 THR A  363  ALA A  366  5                                   4    
HELIX   14  14 ARG A  367  MET A  379  1                                  13    
HELIX   15  15 GLU A  380  PHE A  382  5                                   3    
HELIX   16  16 ASN A  386  ILE A  403  1                                  18    
HELIX   17  17 SER A  404  ARG A  408  5                                   5    
HELIX   18  18 PRO A  409  GLU A  434  1                                  26    
HELIX   19  19 ALA A  439  ASP A  443  5                                   5    
HELIX   20  20 THR A  448  VAL A  460  1                                  13    
HELIX   21  21 VAL A  460  PHE A  472  1                                  13    
HELIX   22  22 MET A  474  LYS A  501  1                                  28    
HELIX   23  23 SER B  189  LEU B  196  1                                   8    
HELIX   24  24 GLU B  207  LEU B  222  1                                  16    
HELIX   25  25 GLY B  223  PHE B  228  1                                   6    
HELIX   26  26 ASN B  231  ASN B  245  1                                  15    
HELIX   27  27 ASN B  253  CYS B  271  1                                  19    
HELIX   28  28 SER B  272  PHE B  277  1                                   6    
HELIX   29  29 SER B  278  HIS B  292  1                                  15    
HELIX   30  30 ASN B  300  ALA B  307  1                                   8    
HELIX   31  31 THR B  309  TYR B  315  1                                   7    
HELIX   32  32 SER B  319  ALA B  334  1                                  16    
HELIX   33  33 GLU B  335  ASN B  339  5                                   5    
HELIX   34  34 PRO B  345  ALA B  362  1                                  18    
HELIX   35  35 THR B  363  ALA B  366  5                                   4    
HELIX   36  36 ARG B  367  GLU B  380  1                                  14    
HELIX   37  37 ASN B  386  ILE B  403  1                                  18    
HELIX   38  38 SER B  404  ARG B  408  5                                   5    
HELIX   39  39 PRO B  409  GLY B  435  1                                  27    
HELIX   40  40 ALA B  439  ASP B  443  5                                   5    
HELIX   41  41 THR B  448  VAL B  460  1                                  13    
HELIX   42  42 VAL B  460  PHE B  472  1                                  13    
HELIX   43  43 MET B  474  MET B  479  1                                   6    
HELIX   44  44 MET B  479  LEU B  503  1                                  25    
LINK        ZN    ZN A 101                 NE2 HIS A 256     1555   1555  2.13  
LINK        ZN    ZN A 101                 OD1 ASP A 402     1555   1555  2.06  
LINK        ZN    ZN A 101                 O   HOH A 507     1555   1555  2.64  
LINK        ZN    ZN A 101                 NE2 HIS A 292     1555   1555  2.11  
LINK        ZN    ZN A 101                 OD2 ASP A 293     1555   1555  2.06  
LINK        MG    MG A 102                 O   HOH A 509     1555   1555  2.38  
LINK        MG    MG A 102                 OD1 ASP A 293     1555   1555  2.13  
LINK        MG    MG A 102                 O   HOH A 510     1555   1555  2.41  
LINK        MG    MG A 102                 O   HOH A 511     1555   1555  2.20  
LINK        MG    MG A 102                 O   HOH A 508     1555   1555  2.28  
LINK        ZN    ZN B 101                 OD1 ASP B 402     1555   1555  2.06  
LINK        ZN    ZN B 101                 OD2 ASP B 293     1555   1555  2.06  
LINK        ZN    ZN B 101                 NE2 HIS B 292     1555   1555  2.11  
LINK        ZN    ZN B 101                 NE2 HIS B 256     1555   1555  2.12  
LINK        MG    MG B 102                 O   HOH B 508     1555   1555  2.20  
LINK        MG    MG B 102                 O   HOH B 511     1555   1555  2.28  
LINK        MG    MG B 102                 O   HOH B 509     1555   1555  2.28  
LINK        MG    MG B 102                 O   HOH B 510     1555   1555  2.30  
LINK        MG    MG B 102                 OD1 ASP B 293     1555   1555  2.10  
SITE     1 AC1  6  MG A 102  HIS A 256  HIS A 292  ASP A 293                    
SITE     2 AC1  6 ASP A 402  HOH A 507                                          
SITE     1 AC2  6  ZN A 101  ASP A 293  HOH A 508  HOH A 509                    
SITE     2 AC2  6 HOH A 510  HOH A 511                                          
SITE     1 AC3  5  MG B 102  HIS B 256  HIS B 292  ASP B 293                    
SITE     2 AC3  5 ASP B 402                                                     
SITE     1 AC4  6  ZN B 101  ASP B 293  HOH B 508  HOH B 509                    
SITE     2 AC4  6 HOH B 510  HOH B 511                                          
SITE     1 AC5  5 ILE A 403  LEU A 420  TYR A 424  GLN A 453                    
SITE     2 AC5  5 PHE A 456                                                     
SITE     1 AC6  7 ALA A 499  LEU B 420  TYR B 424  PHE B 441                    
SITE     2 AC6  7 ALA B 452  GLN B 453  PHE B 456                               
CRYST1  103.513  103.513  269.727  90.00  90.00  90.00 P 41 21 2    16          
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      0.009661  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.009661  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.003707        0.00000