PDB Short entry for 4HBN
HEADER    NEUROPEPTIDE                            28-SEP-12   4HBN              
TITLE     CRYSTAL STRUCTURE OF THE HUMAN HCN4 CHANNEL C-TERMINUS CARRYING THE   
TITLE    2 S672R MUTATION                                                       
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: POTASSIUM/SODIUM HYPERPOLARIZATION-ACTIVATED CYCLIC        
COMPND   3 NUCLEOTIDE-GATED CHANNEL 4;                                          
COMPND   4 CHAIN: A;                                                            
COMPND   5 FRAGMENT: C-LINKER AND CNBD: UNP RESIDUES 521-724;                   
COMPND   6 ENGINEERED: YES;                                                     
COMPND   7 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   3 ORGANISM_COMMON: HUMAN;                                              
SOURCE   4 ORGANISM_TAXID: 9606;                                                
SOURCE   5 GENE: HCN4;                                                          
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 469008;                                     
SOURCE   8 EXPRESSION_SYSTEM_STRAIN: BL21(DE3);                                 
SOURCE   9 EXPRESSION_SYSTEM_VECTOR_TYPE: PET28;                                
SOURCE  10 EXPRESSION_SYSTEM_PLASMID: PSMT3_HHCN4_S672R                         
KEYWDS    CAMP BINDING, CAMP, NEUROPEPTIDE                                      
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    X.XU,F.MARNI,X.WU,Z.SU,F.MUSAYEV,S.SHRESTHA,C.XIE,W.GAO,Q.LIU,L.ZHOU  
REVDAT   1   16-JAN-13 4HBN    0                                                
JRNL        AUTH   X.XU,F.MARNI,S.WU,Z.SU,F.MUSAYEV,S.SHRESTHA,C.XIE,W.GAO,     
JRNL        AUTH 2 Q.LIU,L.ZHOU                                                 
JRNL        TITL   LOCAL AND GLOBAL INTERPRETATIONS OF A DISEASE-CAUSING        
JRNL        TITL 2 MUTATION NEAR THE LIGAND ENTRY PATH IN                       
JRNL        TITL 3 HYPERPOLARIZATION-ACTIVATED CAMP-GATED CHANNEL.              
JRNL        REF    STRUCTURE                     V.  20  2116 2012              
JRNL        REFN                   ISSN 0969-2126                               
JRNL        PMID   23103389                                                     
JRNL        DOI    10.1016/J.STR.2012.09.017                                    
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.60 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.5.0102                                      
REMARK   3   AUTHORS     : MURSHUDOV,VAGIN,DODSON                               
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : MAXIMUM LIKELIHOOD                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.60                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 50.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   COMPLETENESS FOR RANGE        (%) : 97.7                           
REMARK   3   NUMBER OF REFLECTIONS             : 7972                           
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : THROUGHOUT                      
REMARK   3   FREE R VALUE TEST SET SELECTION  : RANDOM                          
REMARK   3   R VALUE     (WORKING + TEST SET) : 0.259                           
REMARK   3   R VALUE            (WORKING SET) : 0.257                           
REMARK   3   FREE R VALUE                     : 0.297                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 4.800                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 400                             
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 20                           
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.60                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.67                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 581                          
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 100.00                       
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2510                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 30                           
REMARK   3   BIN FREE R VALUE                    : 0.2860                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 1605                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 27                                      
REMARK   3   SOLVENT ATOMS            : 60                                      
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 48.09                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -1.85000                                             
REMARK   3    B22 (A**2) : -1.85000                                             
REMARK   3    B33 (A**2) : 3.69000                                              
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 OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): 0.816         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.364         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.293         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 13.493        
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.903                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.879                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  1668 ; 0.007 ; 0.022       
REMARK   3   BOND LENGTHS OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  2251 ; 1.238 ; 1.980       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   197 ; 6.488 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):    84 ;34.072 ;22.500       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   287 ;20.028 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):    18 ;23.661 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   239 ; 0.083 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  1270 ; 0.009 ; 0.021       
REMARK   3   GENERAL PLANES OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW REFINED ATOMS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND OTHERS            (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.     COUNT   RMS    WEIGHT      
REMARK   3   MAIN-CHAIN BOND REFINED ATOMS  (A**2):   989 ; 1.017 ; 1.500       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  1584 ; 1.900 ; 2.000       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):   679 ; 2.848 ; 3.000       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):   667 ; 4.491 ; 4.500       
REMARK   3                                                                      
REMARK   3 ANISOTROPIC THERMAL FACTOR RESTRAINTS.    COUNT   RMS   WEIGHT       
REMARK   3   RIGID-BOND RESTRAINTS          (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; FREE ATOMS         (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; BONDED ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS STATISTICS                                           
REMARK   3   NUMBER OF DIFFERENT NCS GROUPS : NULL                              
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : NULL                                       
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED : MASK                                                 
REMARK   3   PARAMETERS FOR MASK CALCULATION                                    
REMARK   3   VDW PROBE RADIUS   : 1.40                                          
REMARK   3   ION PROBE RADIUS   : 0.80                                          
REMARK   3   SHRINKAGE RADIUS   : 0.80                                          
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THE RIDING   
REMARK   3  POSITIONS                                                           
REMARK   4                                                                      
REMARK   4 4HBN COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 02-OCT-12.                  
REMARK 100 THE RCSB ID CODE IS RCSB075263.                                      
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 21-DEC-10                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 4.2                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : N                                  
REMARK 200  RADIATION SOURCE               : ROTATING ANODE                     
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : RIGAKU MICROMAX-007                
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.54                               
REMARK 200  MONOCHROMATOR                  : NO.                                
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : AREA DETECTOR                      
REMARK 200  DETECTOR MANUFACTURER          : RIGAKU RAXIS IV++                  
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : D*TREK                             
REMARK 200  DATA SCALING SOFTWARE          : D*TREK                             
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 8484                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.600                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 50.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 1.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.1                               
REMARK 200  DATA REDUNDANCY                : NULL                               
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : NULL                               
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.60                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.69                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 100.0                              
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.23200                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 7.600                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: PHASES                                                
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 54.93                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.73                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 1.6 M KH2PO4/NA2HPO4 AND 0.1 M           
REMARK 280  PHOSPHATE-CITRATE, PH 4.2, VAPOR DIFFUSION, HANGING DROP,           
REMARK 280  TEMPERATURE 277K                                                    
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: I 4 2 2                          
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,-Y,Z                                                 
REMARK 290       3555   -Y,X,Z                                                  
REMARK 290       4555   Y,-X,Z                                                  
REMARK 290       5555   -X,Y,-Z                                                 
REMARK 290       6555   X,-Y,-Z                                                 
REMARK 290       7555   Y,X,-Z                                                  
REMARK 290       8555   -Y,-X,-Z                                                
REMARK 290       9555   X+1/2,Y+1/2,Z+1/2                                       
REMARK 290      10555   -X+1/2,-Y+1/2,Z+1/2                                     
REMARK 290      11555   -Y+1/2,X+1/2,Z+1/2                                      
REMARK 290      12555   Y+1/2,-X+1/2,Z+1/2                                      
REMARK 290      13555   -X+1/2,Y+1/2,-Z+1/2                                     
REMARK 290      14555   X+1/2,-Y+1/2,-Z+1/2                                     
REMARK 290      15555   Y+1/2,X+1/2,-Z+1/2                                      
REMARK 290      16555   -Y+1/2,-X+1/2,-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        0.00000            
REMARK 290   SMTRY1   3  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   4  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   4 -1.000000  0.000000  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        0.00000            
REMARK 290   SMTRY1   6  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   6  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   7  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   7  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   7  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   8  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   8 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   8  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   9  1.000000  0.000000  0.000000       47.73350            
REMARK 290   SMTRY2   9  0.000000  1.000000  0.000000       47.73350            
REMARK 290   SMTRY3   9  0.000000  0.000000  1.000000       57.99500            
REMARK 290   SMTRY1  10 -1.000000  0.000000  0.000000       47.73350            
REMARK 290   SMTRY2  10  0.000000 -1.000000  0.000000       47.73350            
REMARK 290   SMTRY3  10  0.000000  0.000000  1.000000       57.99500            
REMARK 290   SMTRY1  11  0.000000 -1.000000  0.000000       47.73350            
REMARK 290   SMTRY2  11  1.000000  0.000000  0.000000       47.73350            
REMARK 290   SMTRY3  11  0.000000  0.000000  1.000000       57.99500            
REMARK 290   SMTRY1  12  0.000000  1.000000  0.000000       47.73350            
REMARK 290   SMTRY2  12 -1.000000  0.000000  0.000000       47.73350            
REMARK 290   SMTRY3  12  0.000000  0.000000  1.000000       57.99500            
REMARK 290   SMTRY1  13 -1.000000  0.000000  0.000000       47.73350            
REMARK 290   SMTRY2  13  0.000000  1.000000  0.000000       47.73350            
REMARK 290   SMTRY3  13  0.000000  0.000000 -1.000000       57.99500            
REMARK 290   SMTRY1  14  1.000000  0.000000  0.000000       47.73350            
REMARK 290   SMTRY2  14  0.000000 -1.000000  0.000000       47.73350            
REMARK 290   SMTRY3  14  0.000000  0.000000 -1.000000       57.99500            
REMARK 290   SMTRY1  15  0.000000  1.000000  0.000000       47.73350            
REMARK 290   SMTRY2  15  1.000000  0.000000  0.000000       47.73350            
REMARK 290   SMTRY3  15  0.000000  0.000000 -1.000000       57.99500            
REMARK 290   SMTRY1  16  0.000000 -1.000000  0.000000       47.73350            
REMARK 290   SMTRY2  16 -1.000000  0.000000  0.000000       47.73350            
REMARK 290   SMTRY3  16  0.000000  0.000000 -1.000000       57.99500            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: TETRAMERIC                        
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TETRAMERIC                 
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 12630 ANGSTROM**2                         
REMARK 350 SURFACE AREA OF THE COMPLEX: 38170 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -74.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A                                     
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   2 -1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   3  0.000000 -1.000000  0.000000        0.00000            
REMARK 350   BIOMT2   3  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   4  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT2   4 -1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT3   4  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     LYS A   645                                                      
REMARK 465     ILE A   720                                                      
REMARK 465     LEU A   721                                                      
REMARK 465     LEU A   722                                                      
REMARK 465     HIS A   723                                                      
REMARK 465     LYS A   724                                                      
REMARK 470                                                                      
REMARK 470 MISSING ATOM                                                         
REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER;           
REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER;          
REMARK 470 I=INSERTION CODE):                                                   
REMARK 470   M RES CSSEQI  ATOMS                                                
REMARK 470     ASP A 521    CG   OD1  OD2                                       
REMARK 470     GLN A 526    CG   CD   OE1  NE2                                  
REMARK 470     GLU A 556    CG   CD   OE1  OE2                                  
REMARK 470     ARG A 612    CG   CD   NE   CZ   NH1  NH2                        
REMARK 470     LYS A 630    CG   CD   CE   NZ                                   
REMARK 470     THR A 644    OG1  CG2                                            
REMARK 470     ASN A 647    CG   OD1  ND2                                       
REMARK 470     LYS A 648    CG   CD   CE   NZ                                   
REMARK 470     GLU A 649    CG   CD   OE1  OE2                                  
REMARK 470     LYS A 717    CG   CD   CE   NZ                                   
REMARK 470     ASN A 718    CG   OD1  ND2                                       
REMARK 470     SER A 719    OG                                                  
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT                     
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT.                            
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI           DISTANCE          
REMARK 500   OG   SER A   568     O3   PO4 A   802              2.18            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    SER A 522      -37.32   -168.97                                   
REMARK 500    GLN A 560       19.89     36.94                                   
REMARK 500    ASP A 565       40.38    -72.62                                   
REMARK 500    ASP A 620      157.21    -45.88                                   
REMARK 500    ASN A 647     -131.73   -100.11                                   
REMARK 500    ALA A 671     -167.10   -167.89                                   
REMARK 500    TYR A 678       92.75    -59.63                                   
REMARK 500    MET A 698      -35.07    -37.55                                   
REMARK 500    ILE A 714      -84.66    -91.20                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 525                                                                      
REMARK 525 SOLVENT                                                              
REMARK 525                                                                      
REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT                    
REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST                  
REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT                 
REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE                       
REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER;                             
REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE                  
REMARK 525 NUMBER; I=INSERTION CODE):                                           
REMARK 525                                                                      
REMARK 525  M RES CSSEQI                                                        
REMARK 525    HOH A 920        DISTANCE =  5.88 ANGSTROMS                       
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CMP A 801                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE PO4 A 802                 
DBREF  4HBN A  521   724  UNP    Q9Y3Q4   HCN4_HUMAN     521    724             
SEQADV 4HBN SER A  520  UNP  Q9Y3Q4              EXPRESSION TAG                 
SEQADV 4HBN ARG A  672  UNP  Q9Y3Q4    SER   672 ENGINEERED MUTATION            
SEQRES   1 A  205  SER ASP SER SER ARG ARG GLN TYR GLN GLU LYS TYR LYS          
SEQRES   2 A  205  GLN VAL GLU GLN TYR MET SER PHE HIS LYS LEU PRO PRO          
SEQRES   3 A  205  ASP THR ARG GLN ARG ILE HIS ASP TYR TYR GLU HIS ARG          
SEQRES   4 A  205  TYR GLN GLY LYS MET PHE ASP GLU GLU SER ILE LEU GLY          
SEQRES   5 A  205  GLU LEU SER GLU PRO LEU ARG GLU GLU ILE ILE ASN PHE          
SEQRES   6 A  205  ASN CYS ARG LYS LEU VAL ALA SER MET PRO LEU PHE ALA          
SEQRES   7 A  205  ASN ALA ASP PRO ASN PHE VAL THR SER MET LEU THR LYS          
SEQRES   8 A  205  LEU ARG PHE GLU VAL PHE GLN PRO GLY ASP TYR ILE ILE          
SEQRES   9 A  205  ARG GLU GLY THR ILE GLY LYS LYS MET TYR PHE ILE GLN          
SEQRES  10 A  205  HIS GLY VAL VAL SER VAL LEU THR LYS GLY ASN LYS GLU          
SEQRES  11 A  205  THR LYS LEU ALA ASP GLY SER TYR PHE GLY GLU ILE CYS          
SEQRES  12 A  205  LEU LEU THR ARG GLY ARG ARG THR ALA ARG VAL ARG ALA          
SEQRES  13 A  205  ASP THR TYR CYS ARG LEU TYR SER LEU SER VAL ASP ASN          
SEQRES  14 A  205  PHE ASN GLU VAL LEU GLU GLU TYR PRO MET MET ARG ARG          
SEQRES  15 A  205  ALA PHE GLU THR VAL ALA LEU ASP ARG LEU ASP ARG ILE          
SEQRES  16 A  205  GLY LYS LYS ASN SER ILE LEU LEU HIS LYS                      
HET    CMP  A 801      22                                                       
HET    PO4  A 802       5                                                       
HETNAM     CMP ADENOSINE-3',5'-CYCLIC-MONOPHOSPHATE                             
HETNAM     PO4 PHOSPHATE ION                                                    
HETSYN     CMP CYCLIC AMP; CAMP                                                 
FORMUL   2  CMP    C10 H12 N5 O6 P                                              
FORMUL   3  PO4    O4 P 3-                                                      
FORMUL   4  HOH   *60(H2 O)                                                     
HELIX    1   1 SER A  522  HIS A  541  1                                  20    
HELIX    2   2 PRO A  544  GLN A  560  1                                  17    
HELIX    3   3 ASP A  565  LEU A  573  1                                   9    
HELIX    4   4 SER A  574  CYS A  586  1                                  13    
HELIX    5   5 CYS A  586  SER A  592  1                                   7    
HELIX    6   6 MET A  593  ASN A  598  1                                   6    
HELIX    7   7 ASP A  600  THR A  609  1                                  10    
HELIX    8   8 GLU A  660  ARG A  666  1                                   7    
HELIX    9   9 VAL A  686  TYR A  696  1                                  11    
HELIX   10  10 MET A  699  GLY A  715  1                                  17    
SHEET    1   A 4 ARG A 612  PHE A 616  0                                        
SHEET    2   A 4 CYS A 679  SER A 685 -1  O  LEU A 681   N  GLU A 614           
SHEET    3   A 4 LYS A 631  HIS A 637 -1  N  MET A 632   O  LEU A 684           
SHEET    4   A 4 TYR A 657  PHE A 658 -1  O  PHE A 658   N  TYR A 633           
SHEET    1   B 4 TYR A 621  ILE A 623  0                                        
SHEET    2   B 4 ARG A 672  ALA A 675 -1  O  VAL A 673   N  ILE A 623           
SHEET    3   B 4 VAL A 640  LEU A 643 -1  N  SER A 641   O  ARG A 674           
SHEET    4   B 4 GLU A 649  LEU A 652 -1  O  THR A 650   N  VAL A 642           
SITE     1 AC1 12 VAL A 642  THR A 650  PHE A 658  GLY A 659                    
SITE     2 AC1 12 GLU A 660  ILE A 661  CYS A 662  ARG A 669                    
SITE     3 AC1 12 THR A 670  ARG A 710  ARG A 713  HOH A 948                    
SITE     1 AC2  2 SER A 568  GLU A 572                                          
CRYST1   95.467   95.467  115.990  90.00  90.00  90.00 I 4 2 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      0.010475  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.010475  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.008621        0.00000