HEADER    HYDROLASE/HYDROLASE INHIBITOR           22-AUG-13   4MD6              
TITLE     CRYSTAL STRUCTURE OF PDE5 IN COMPLEX WITH INHIBITOR 5R                
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: CGMP-SPECIFIC 3',5'-CYCLIC PHOSPHODIESTERASE;              
COMPND   3 CHAIN: A;                                                            
COMPND   4 FRAGMENT: CATALYTIC DOMAIN (UNP RESIDUES 535-860);                   
COMPND   5 SYNONYM: CGMP-BINDING CGMP-SPECIFIC PHOSPHODIESTERASE, CGB-PDE;      
COMPND   6 EC: 3.1.4.35;                                                        
COMPND   7 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   3 ORGANISM_COMMON: HUMAN;                                              
SOURCE   4 ORGANISM_TAXID: 9606;                                                
SOURCE   5 GENE: PDE5A, PDE5;                                                   
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE   9 EXPRESSION_SYSTEM_PLASMID: PET15                                     
KEYWDS    PROTEIN-INHIBITOR COMPLEX, PHOSPHODIESTERASE, PDE5 INHIBITOR,         
KEYWDS   2 HYDROLASE-HYDROLASE INHIBITOR COMPLEX                                
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    W.CUI,M.HUANG,Y.SHAO,H.LUO                                            
REVDAT   2   20-NOV-24 4MD6    1       REMARK LINK                              
REVDAT   1   09-JUL-14 4MD6    0                                                
JRNL        AUTH   N.N.SHANG,Y.X.SHAO,Y.H.CAI,M.GUAN,M.HUANG,W.CUI,L.HE,Y.J.YU, 
JRNL        AUTH 2 L.HUANG,Z.LI,X.Z.BU,H.KE,H.B.LUO                             
JRNL        TITL   DISCOVERY OF                                                 
JRNL        TITL 2 3-(4-HYDROXYBENZYL)-1-(THIOPHEN-2-YL)CHROMENO[2,             
JRNL        TITL 3 3-C]PYRROL-9(2H)-ONE AS A PHOSPHODIESTERASE-5 INHIBITOR AND  
JRNL        TITL 4 ITS COMPLEX CRYSTAL STRUCTURE.                               
JRNL        REF    BIOCHEM PHARMACOL             V.  89    86 2014              
JRNL        REFN                                                                
JRNL        PMID   24565909                                                     
JRNL        DOI    10.1016/J.BCP.2014.02.013                                    
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.00 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) : 2.00                           
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)   (%) : 97.7                           
REMARK   3   NUMBER OF REFLECTIONS             : 28434                          
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) : 0.217                           
REMARK   3   FREE R VALUE                     : 0.248                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 9.700                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 2830                            
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            : 2418                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 34                                      
REMARK   3   SOLVENT ATOMS            : 71                                      
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 47.80                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 1.02000                                              
REMARK   3    B22 (A**2) : 1.02000                                              
REMARK   3    B33 (A**2) : -2.04000                                             
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) : 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) : 0.005                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.100                           
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) : 1.475 ; 1.500                
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : 2.326 ; 2.000                
REMARK   3   SIDE-CHAIN BOND              (A**2) : 2.175 ; 2.000                
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : 3.121 ; 2.500                
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : NULL                                                 
REMARK   3   KSOL        : NULL                                                 
REMARK   3   BSOL        : 60.18                                                
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  : CNS_TOPPAR:PROTEIN_REP.PARAM                   
REMARK   3  PARAMETER FILE  2  : CNS_TOPPAR:WATER_REP.PARAM                     
REMARK   3  PARAMETER FILE  3  : CNS_TOPPAR:DNA-RNA_REP.PARAM                   
REMARK   3  PARAMETER FILE  4  : 5R.PARAM                                       
REMARK   3  PARAMETER FILE  5  : ION.PARAM                                      
REMARK   3  PARAMETER FILE  6  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : NULL                                           
REMARK   3  TOPOLOGY FILE  2   : NULL                                           
REMARK   3  TOPOLOGY FILE  3   : NULL                                           
REMARK   3  TOPOLOGY FILE  4   : NULL                                           
REMARK   3  TOPOLOGY FILE  5   : NULL                                           
REMARK   3  TOPOLOGY FILE  6   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 4MD6 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 27-AUG-13.                  
REMARK 100 THE DEPOSITION ID IS D_1000081762.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 20-JUN-13                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 6.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : NSLS                               
REMARK 200  BEAMLINE                       : X29A                               
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1                                  
REMARK 200  MONOCHROMATOR                  : ROSENBAUM-ROCK DOUBLE CRYSTAL      
REMARK 200                                   SAGITTAL FOCUSING                  
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 315                   
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : HKL-2000                           
REMARK 200  DATA SCALING SOFTWARE          : HKL-2000                           
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 29180                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.000                              
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     (%) : 100.0                              
REMARK 200  DATA REDUNDANCY                : 22.80                              
REMARK 200  R MERGE                    (I) : 0.06500                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 14.0000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.00                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : NULL                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : NULL                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: AMORE                                                 
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 55.69                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.78                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 6-10 MG/ML UNLIGANDED PDE5A1 IN          
REMARK 280  STORAGE BUFFER (50 MM SODIUM CHLORIDE, 20 MM TRIS-HCL, PH 7.5, 1    
REMARK 280  MM BME, 1 MM EDTA) AGAINST 0.2 M MAGNESIUM SULFATE, 0.1 M SODIUM    
REMARK 280  CACODYLATE, PH 6.5, 18% PEG3350, VAPOR DIFFUSION, HANGING DROP,     
REMARK 280  TEMPERATURE 277K                                                    
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 31 2 1                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -Y,X-Y,Z+1/3                                            
REMARK 290       3555   -X+Y,-X,Z+2/3                                           
REMARK 290       4555   Y,X,-Z                                                  
REMARK 290       5555   X-Y,-Y,-Z+2/3                                           
REMARK 290       6555   -X,-X+Y,-Z+1/3                                          
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       44.11467            
REMARK 290   SMTRY1   3 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   3 -0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000       88.22933            
REMARK 290   SMTRY1   4 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   4  0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   5  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   5  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   5  0.000000  0.000000 -1.000000       88.22933            
REMARK 290   SMTRY1   6 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   6 -0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   6  0.000000  0.000000 -1.000000       44.11467            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC                  
REMARK 350 SOFTWARE USED: PISA                                                  
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 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     ARG A   667                                                      
REMARK 465     SER A   668                                                      
REMARK 465     GLU A   669                                                      
REMARK 465     HIS A   670                                                      
REMARK 465     PRO A   671                                                      
REMARK 465     LEU A   672                                                      
REMARK 465     ALA A   673                                                      
REMARK 465     GLN A   674                                                      
REMARK 465     LEU A   675                                                      
REMARK 465     TYR A   676                                                      
REMARK 465     ASP A   791                                                      
REMARK 465     ARG A   792                                                      
REMARK 465     GLU A   793                                                      
REMARK 465     ARG A   794                                                      
REMARK 465     LYS A   795                                                      
REMARK 465     GLU A   796                                                      
REMARK 465     LEU A   797                                                      
REMARK 465     ASN A   798                                                      
REMARK 465     ILE A   799                                                      
REMARK 465     GLU A   800                                                      
REMARK 465     PRO A   801                                                      
REMARK 465     THR A   802                                                      
REMARK 465     ASP A   803                                                      
REMARK 465     LEU A   804                                                      
REMARK 465     MET A   805                                                      
REMARK 465     ASN A   806                                                      
REMARK 465     ARG A   807                                                      
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    LYS A 630      -79.61    -84.84                                   
REMARK 500    ASN A 662       42.17   -101.28                                   
REMARK 500    HIS A 678       21.53     34.80                                   
REMARK 500    SER A 679       71.21     31.52                                   
REMARK 500    PHE A 787      -67.23    -94.78                                   
REMARK 500    ASP A 788        7.22    -59.42                                   
REMARK 500    LYS A 809     -100.73    -15.10                                   
REMARK 500    GLN A 859      104.94     70.03                                   
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 903  ZN                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HIS A 617   NE2                                                    
REMARK 620 2 HIS A 653   NE2  88.7                                              
REMARK 620 3 ASP A 654   OD2  87.6  85.9                                        
REMARK 620 4 ASP A 764   OD1  84.3  86.2 168.8                                  
REMARK 620 5 SO4 A 901   O3   94.1 176.5  96.1  92.1                            
REMARK 620 6 HOH A1001   O   171.9  91.5 100.6  87.6  85.4                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG A 904  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 ASP A 654   OD1                                                    
REMARK 620 2 HOH A1001   O   103.2                                              
REMARK 620 3 HOH A1002   O    99.3  96.0                                        
REMARK 620 4 HOH A1003   O    81.5  85.2 178.3                                  
REMARK 620 5 HOH A1004   O   164.3  80.0  95.5  83.5                            
REMARK 620 6 HOH A1005   O    86.5 169.0  87.2  91.3  89.3                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 901                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE 24E A 902                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 903                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 904                  
DBREF  4MD6 A  535   860  UNP    O76074   PDE5A_HUMAN    535    860             
SEQRES   1 A  326  GLU GLU THR ARG GLU LEU GLN SER LEU ALA ALA ALA VAL          
SEQRES   2 A  326  VAL PRO SER ALA GLN THR LEU LYS ILE THR ASP PHE SER          
SEQRES   3 A  326  PHE SER ASP PHE GLU LEU SER ASP LEU GLU THR ALA LEU          
SEQRES   4 A  326  CYS THR ILE ARG MET PHE THR ASP LEU ASN LEU VAL GLN          
SEQRES   5 A  326  ASN PHE GLN MET LYS HIS GLU VAL LEU CYS ARG TRP ILE          
SEQRES   6 A  326  LEU SER VAL LYS LYS ASN TYR ARG LYS ASN VAL ALA TYR          
SEQRES   7 A  326  HIS ASN TRP ARG HIS ALA PHE ASN THR ALA GLN CYS MET          
SEQRES   8 A  326  PHE ALA ALA LEU LYS ALA GLY LYS ILE GLN ASN LYS LEU          
SEQRES   9 A  326  THR ASP LEU GLU ILE LEU ALA LEU LEU ILE ALA ALA LEU          
SEQRES  10 A  326  SER HIS ASP LEU ASP HIS ARG GLY VAL ASN ASN SER TYR          
SEQRES  11 A  326  ILE GLN ARG SER GLU HIS PRO LEU ALA GLN LEU TYR CYS          
SEQRES  12 A  326  HIS SER ILE MET GLU HIS HIS HIS PHE ASP GLN CYS LEU          
SEQRES  13 A  326  MET ILE LEU ASN SER PRO GLY ASN GLN ILE LEU SER GLY          
SEQRES  14 A  326  LEU SER ILE GLU GLU TYR LYS THR THR LEU LYS ILE ILE          
SEQRES  15 A  326  LYS GLN ALA ILE LEU ALA THR ASP LEU ALA LEU TYR ILE          
SEQRES  16 A  326  LYS ARG ARG GLY GLU PHE PHE GLU LEU ILE ARG LYS ASN          
SEQRES  17 A  326  GLN PHE ASN LEU GLU ASP PRO HIS GLN LYS GLU LEU PHE          
SEQRES  18 A  326  LEU ALA MET LEU MET THR ALA CYS ASP LEU SER ALA ILE          
SEQRES  19 A  326  THR LYS PRO TRP PRO ILE GLN GLN ARG ILE ALA GLU LEU          
SEQRES  20 A  326  VAL ALA THR GLU PHE PHE ASP GLN GLY ASP ARG GLU ARG          
SEQRES  21 A  326  LYS GLU LEU ASN ILE GLU PRO THR ASP LEU MET ASN ARG          
SEQRES  22 A  326  GLU LYS LYS ASN LYS ILE PRO SER MET GLN VAL GLY PHE          
SEQRES  23 A  326  ILE ASP ALA ILE CYS LEU GLN LEU TYR GLU ALA LEU THR          
SEQRES  24 A  326  HIS VAL SER GLU ASP CYS PHE PRO LEU LEU ASP GLY CYS          
SEQRES  25 A  326  ARG LYS ASN ARG GLN LYS TRP GLN ALA LEU ALA GLU GLN          
SEQRES  26 A  326  GLN                                                          
HET    SO4  A 901       5                                                       
HET    24E  A 902      27                                                       
HET     ZN  A 903       1                                                       
HET     MG  A 904       1                                                       
HETNAM     SO4 SULFATE ION                                                      
HETNAM     24E 3-(4-HYDROXYBENZYL)-1-(THIOPHEN-2-YL)CHROMENO[2,3-               
HETNAM   2 24E  C]PYRROL-9(2H)-ONE                                              
HETNAM      ZN ZINC ION                                                         
HETNAM      MG MAGNESIUM ION                                                    
FORMUL   2  SO4    O4 S 2-                                                      
FORMUL   3  24E    C22 H15 N O3 S                                               
FORMUL   4   ZN    ZN 2+                                                        
FORMUL   5   MG    MG 2+                                                        
FORMUL   6  HOH   *71(H2 O)                                                     
HELIX    1   1 GLU A  535  ALA A  546  1                                  12    
HELIX    2   2 SER A  550  LYS A  555  1                                   6    
HELIX    3   3 SER A  567  LEU A  582  1                                  16    
HELIX    4   4 ASN A  583  PHE A  588  1                                   6    
HELIX    5   5 LYS A  591  ASN A  605  1                                  15    
HELIX    6   6 ASN A  614  ALA A  631  1                                  18    
HELIX    7   7 ILE A  634  LEU A  638  5                                   5    
HELIX    8   8 THR A  639  HIS A  653  1                                  15    
HELIX    9   9 GLY A  659  SER A  663  5                                   5    
HELIX   10  10 SER A  679  ASN A  694  1                                  16    
HELIX   11  11 SER A  705  THR A  723  1                                  19    
HELIX   12  12 ASP A  724  LYS A  741  1                                  18    
HELIX   13  13 ASP A  748  SER A  766  1                                  19    
HELIX   14  14 ALA A  767  LYS A  770  5                                   4    
HELIX   15  15 PRO A  771  PHE A  787  1                                  17    
HELIX   16  16 GLU A  808  ASN A  811  5                                   4    
HELIX   17  17 LYS A  812  ILE A  824  1                                  13    
HELIX   18  18 ILE A  824  SER A  836  1                                  13    
HELIX   19  19 CYS A  839  GLU A  858  1                                  20    
SSBOND   1 CYS A  677    CYS A  677                          1555   5555  1.85  
LINK         NE2 HIS A 617                ZN    ZN A 903     1555   1555  2.28  
LINK         NE2 HIS A 653                ZN    ZN A 903     1555   1555  2.23  
LINK         OD2 ASP A 654                ZN    ZN A 903     1555   1555  2.28  
LINK         OD1 ASP A 654                MG    MG A 904     1555   1555  2.22  
LINK         OD1 ASP A 764                ZN    ZN A 903     1555   1555  2.28  
LINK         O3  SO4 A 901                ZN    ZN A 903     1555   1555  2.18  
LINK        ZN    ZN A 903                 O   HOH A1001     1555   1555  2.42  
LINK        MG    MG A 904                 O   HOH A1001     1555   1555  2.21  
LINK        MG    MG A 904                 O   HOH A1002     1555   1555  2.30  
LINK        MG    MG A 904                 O   HOH A1003     1555   1555  2.34  
LINK        MG    MG A 904                 O   HOH A1004     1555   1555  2.40  
LINK        MG    MG A 904                 O   HOH A1005     1555   1555  2.38  
SITE     1 AC1  7 HIS A 613  HIS A 617  ASP A 654  ASP A 764                    
SITE     2 AC1  7 24E A 902   ZN A 903  HOH A1002                               
SITE     1 AC2 12 LEU A 725  ALA A 767  ILE A 768  GLN A 775                    
SITE     2 AC2 12 VAL A 782  ALA A 783  PHE A 787  ILE A 813                    
SITE     3 AC2 12 MET A 816  GLN A 817  PHE A 820  SO4 A 901                    
SITE     1 AC3  7 HIS A 617  HIS A 653  ASP A 654  ASP A 764                    
SITE     2 AC3  7 SO4 A 901   MG A 904  HOH A1001                               
SITE     1 AC4  7 ASP A 654   ZN A 903  HOH A1001  HOH A1002                    
SITE     2 AC4  7 HOH A1003  HOH A1004  HOH A1005                               
CRYST1   74.106   74.106  132.344  90.00  90.00 120.00 P 31 2 1      6          
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      0.013494  0.007791  0.000000        0.00000                         
SCALE2      0.000000  0.015582  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.007556        0.00000