HEADER    DNA                                     25-OCT-01   1K8P              
TITLE     STRUCTURE OF THE HUMAN G-QUADRUPLEX REVEALS A NOVEL TOPOLOGY          
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: 5'-D(*(BRU)P*AP*GP*GP*GP*(BRU)P*TP*AP*GP*GP*GP*T)-3';      
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 SYNTHETIC: YES;                                                      
SOURCE   3 OTHER_DETAILS: THIS SEQUENCE OCCURS NATURALLY IN HUMANS              
KEYWDS    QUADRUPLEX DNA, DOUBLE CHAIN REVERSAL LOOP, DIMERIC QUADRUPLEX, HUMAN 
KEYWDS   2 TELOMERE SEQUENCE, G(ANTI).G(ANTI).G(ANTI).G(ANTI), PARALLEL         
KEYWDS   3 STRANDED, DNA                                                        
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    G.N.PARKINSON,M.P.H.LEE,S.NEIDLE                                      
REVDAT   7   07-FEB-24 1K8P    1       REMARK                                   
REVDAT   6   03-FEB-21 1K8P    1       JRNL   REMARK LINK                       
REVDAT   5   24-JUL-19 1K8P    1       REMARK LINK                              
REVDAT   4   24-FEB-09 1K8P    1       VERSN                                    
REVDAT   3   01-APR-03 1K8P    1       JRNL                                     
REVDAT   2   21-JUN-02 1K8P    1       JRNL                                     
REVDAT   1   31-MAY-02 1K8P    0                                                
JRNL        AUTH   G.N.PARKINSON,M.P.LEE,S.NEIDLE                               
JRNL        TITL   CRYSTAL STRUCTURE OF PARALLEL QUADRUPLEXES FROM HUMAN        
JRNL        TITL 2 TELOMERIC DNA.                                               
JRNL        REF    NATURE                        V. 417   876 2002              
JRNL        REFN                   ISSN 0028-0836                               
JRNL        PMID   12050675                                                     
JRNL        DOI    10.1038/NATURE755                                            
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   G.N.PARKINSON,M.P.H.LEE,S.NEIDLE                             
REMARK   1  TITL   CRYSTAL STRUCTURE OF G-QUADRUPLEX                            
REMARK   1  REF    PATENT                                     2002              
REMARK   1  REFN                                                                
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.40 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : SHELXL-97                                            
REMARK   3   AUTHORS     : G.M.SHELDRICK                                        
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.40                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 10.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : NULL                           
REMARK   3   CROSS-VALIDATION METHOD           : NULL                           
REMARK   3   FREE R VALUE TEST SET SELECTION   : RANDOM                         
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT (NO CUTOFF).                         
REMARK   3   R VALUE   (WORKING + TEST SET, NO CUTOFF) : 0.197                  
REMARK   3   R VALUE          (WORKING SET, NO CUTOFF) : 0.193                  
REMARK   3   FREE R VALUE                  (NO CUTOFF) : 0.280                  
REMARK   3   FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : NULL                   
REMARK   3   FREE R VALUE TEST SET COUNT   (NO CUTOFF) : 286                    
REMARK   3   TOTAL NUMBER OF REFLECTIONS   (NO CUTOFF) : 3029                   
REMARK   3                                                                      
REMARK   3  FIT/AGREEMENT OF MODEL FOR DATA WITH F>4SIG(F).                     
REMARK   3   R VALUE   (WORKING + TEST SET, F>4SIG(F)) : NULL                   
REMARK   3   R VALUE          (WORKING SET, F>4SIG(F)) : NULL                   
REMARK   3   FREE R VALUE                  (F>4SIG(F)) : NULL                   
REMARK   3   FREE R VALUE TEST SET SIZE (%, F>4SIG(F)) : NULL                   
REMARK   3   FREE R VALUE TEST SET COUNT   (F>4SIG(F)) : NULL                   
REMARK   3   TOTAL NUMBER OF REFLECTIONS   (F>4SIG(F)) : NULL                   
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS      : 0                                             
REMARK   3   NUCLEIC ACID ATOMS : 502                                           
REMARK   3   HETEROGEN ATOMS    : 3                                             
REMARK   3   SOLVENT ATOMS      : 50                                            
REMARK   3                                                                      
REMARK   3  MODEL REFINEMENT.                                                   
REMARK   3   OCCUPANCY SUM OF NON-HYDROGEN ATOMS      : NULL                    
REMARK   3   OCCUPANCY SUM OF HYDROGEN ATOMS          : NULL                    
REMARK   3   NUMBER OF DISCRETELY DISORDERED RESIDUES : NULL                    
REMARK   3   NUMBER OF LEAST-SQUARES PARAMETERS       : NULL                    
REMARK   3   NUMBER OF RESTRAINTS                     : NULL                    
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM RESTRAINT TARGET VALUES.                        
REMARK   3   BOND LENGTHS                         (A) : 0.007                   
REMARK   3   ANGLE DISTANCES                      (A) : 0.016                   
REMARK   3   SIMILAR DISTANCES (NO TARGET VALUES) (A) : NULL                    
REMARK   3   DISTANCES FROM RESTRAINT PLANES      (A) : 0.012                   
REMARK   3   ZERO CHIRAL VOLUMES               (A**3) : NULL                    
REMARK   3   NON-ZERO CHIRAL VOLUMES           (A**3) : NULL                    
REMARK   3   ANTI-BUMPING DISTANCE RESTRAINTS     (A) : 0.004                   
REMARK   3   RIGID-BOND ADP COMPONENTS         (A**2) : NULL                    
REMARK   3   SIMILAR ADP COMPONENTS            (A**2) : NULL                    
REMARK   3   APPROXIMATELY ISOTROPIC ADPS      (A**2) : NULL                    
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED: NULL                                                  
REMARK   3                                                                      
REMARK   3  STEREOCHEMISTRY TARGET VALUES : PARKINSON ET AL.                    
REMARK   3   SPECIAL CASE: NULL                                                 
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1K8P COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 01-NOV-01.                  
REMARK 100 THE DEPOSITION ID IS D_1000014699.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 01-MAY-01                          
REMARK 200  TEMPERATURE           (KELVIN) : 103                                
REMARK 200  PH                             : 7.0                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : N                                  
REMARK 200  RADIATION SOURCE               : ROTATING ANODE                     
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : RIGAKU RU200                       
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.5418                             
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : OSMIC MIRROR                       
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : RIGAKU RAXIS IV                    
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : R-AXIS                             
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 2870                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.400                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 26.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 2.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 90.9                               
REMARK 200  DATA REDUNDANCY                : 10.00                              
REMARK 200  R MERGE                    (I) : 0.06800                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 15.0000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.40                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.49                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 99.7                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 10.00                              
REMARK 200  R MERGE FOR SHELL          (I) : 0.28000                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 9.600                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MAD                          
REMARK 200 SOFTWARE USED: CNS                                                   
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 48.77                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.40                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: MPD, KCL, LICL, MGCL2, PH 7.0, VAPOR     
REMARK 280  DIFFUSION, HANGING DROP, TEMPERATURE 286K                           
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       13.51533            
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       27.03067            
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       27.03067            
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       13.51533            
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: DIMERIC                           
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B                                  
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 475                                                                      
REMARK 475 ZERO OCCUPANCY RESIDUES                                              
REMARK 475 THE FOLLOWING RESIDUES WERE MODELED WITH ZERO OCCUPANCY.             
REMARK 475 THE LOCATION AND PROPERTIES OF THESE RESIDUES MAY NOT                
REMARK 475 BE RELIABLE. (M=MODEL NUMBER; RES=RESIDUE NAME;                      
REMARK 475 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE)          
REMARK 475   M RES C  SSEQI                                                     
REMARK 475      DT B    19                                                      
REMARK 475      DA B    20                                                      
REMARK 480                                                                      
REMARK 480 ZERO OCCUPANCY ATOM                                                  
REMARK 480 THE FOLLOWING RESIDUES HAVE ATOMS MODELED WITH ZERO                  
REMARK 480 OCCUPANCY. THE LOCATION AND PROPERTIES OF THESE ATOMS                
REMARK 480 MAY NOT BE RELIABLE. (M=MODEL NUMBER; RES=RESIDUE NAME;              
REMARK 480 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE):         
REMARK 480   M RES C SSEQI ATOMS                                                
REMARK 480     BRU B   18   N1   C2   N3   C4   C5   C6   O2                    
REMARK 480     BRU B   18   O4  BR    C1'  C2'  C3'  C4'  O3'                   
REMARK 480     BRU B   18   O4'  C5'  O5'                                       
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS                                      
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3)               
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   RES CSSEQI ATM2   DEVIATION                     
REMARK 500     DT B  19   C2     DT B  19   N3     -0.064                       
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND ANGLES                                       
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1)              
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   ATM2   ATM3                                     
REMARK 500     DA A   2   O4' -  C1' -  N9  ANGL. DEV. =   2.9 DEGREES          
REMARK 500     DG A   3   O4' -  C1' -  N9  ANGL. DEV. =   2.8 DEGREES          
REMARK 500     DG A   4   O4' -  C1' -  N9  ANGL. DEV. =   4.2 DEGREES          
REMARK 500     DG A   5   O4' -  C1' -  N9  ANGL. DEV. =   2.6 DEGREES          
REMARK 500     DT A   7   O4' -  C1' -  N1  ANGL. DEV. =   2.5 DEGREES          
REMARK 500     DA A   8   O4' -  C1' -  N9  ANGL. DEV. =   2.7 DEGREES          
REMARK 500     DG A   9   O4' -  C1' -  N9  ANGL. DEV. =   3.3 DEGREES          
REMARK 500     DG A  11   O4' -  C1' -  N9  ANGL. DEV. =   3.6 DEGREES          
REMARK 500     DT A  12   O4' -  C1' -  N1  ANGL. DEV. =   2.4 DEGREES          
REMARK 500     DA B  14   O4' -  C1' -  N9  ANGL. DEV. =   2.9 DEGREES          
REMARK 500     DG B  15   O4' -  C1' -  N9  ANGL. DEV. =   3.6 DEGREES          
REMARK 500     DG B  16   O4' -  C1' -  N9  ANGL. DEV. =   5.2 DEGREES          
REMARK 500     DG B  17   O4' -  C1' -  N9  ANGL. DEV. =   3.6 DEGREES          
REMARK 500     DT B  19   O4' -  C1' -  N1  ANGL. DEV. =   4.5 DEGREES          
REMARK 500     DT B  19   N3  -  C2  -  O2  ANGL. DEV. =   4.7 DEGREES          
REMARK 500     DA B  20   O4' -  C1' -  N9  ANGL. DEV. =   3.7 DEGREES          
REMARK 500     DG B  21   O4' -  C1' -  N9  ANGL. DEV. =   5.2 DEGREES          
REMARK 500     DG B  22   O4' -  C1' -  N9  ANGL. DEV. =   3.1 DEGREES          
REMARK 500     DG B  23   O4' -  C1' -  N9  ANGL. DEV. =   2.9 DEGREES          
REMARK 500     DT B  24   O4' -  C1' -  N1  ANGL. DEV. =   2.4 DEGREES          
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                               K A  26   K                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1  DG A   3   O6                                                     
REMARK 620 2  DG A   4   O6   84.1                                              
REMARK 620 3  DG A   9   O6   75.8  90.7                                        
REMARK 620 4  DG A  10   O6  138.6  64.7  77.9                                  
REMARK 620 5  DG B  15   O6  108.9 159.0  77.4  95.6                            
REMARK 620 6  DG B  16   O6  144.9 103.2 137.3  72.3  75.9                      
REMARK 620 7  DG B  21   O6   73.7 133.2 121.6 147.6  67.5  76.7                
REMARK 620 8  DG B  22   O6   88.3  68.6 155.2 103.5 126.5  63.8  70.1          
REMARK 620 9 HOH B2024   O    58.7 135.6  59.1 128.5  50.9 121.2  62.4 127.5    
REMARK 620 N                    1     2     3     4     5     6     7     8     
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                               K A  25   K                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1  DG A   4   O6                                                     
REMARK 620 2  DG A   5   O6   69.5                                              
REMARK 620 3  DG A  10   O6   68.7  86.7                                        
REMARK 620 4  DG A  11   O6  127.9  77.0  70.6                                  
REMARK 620 5   K A  26   K    53.4 117.6  52.7 118.1                            
REMARK 620 6  DG B  16   O6  100.8 155.1  68.4  93.0  47.5                      
REMARK 620 7  DG B  17   O6  154.8 128.7 123.7  76.7 113.6  69.0                
REMARK 620 8  DG B  22   O6   72.1 131.9 105.2 151.0  52.6  60.1  83.1          
REMARK 620 9  DG B  23   O6   94.3  84.0 162.6 121.0 120.2 120.3  73.4  71.1    
REMARK 620 N                    1     2     3     4     5     6     7     8     
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE K A 25                    
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE K A 26                    
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NA A 27                   
DBREF  1K8P A    1    12  PDB    1K8P     1K8P             1     12             
DBREF  1K8P B   13    24  PDB    1K8P     1K8P            13     24             
SEQRES   1 A   12  BRU  DA  DG  DG  DG BRU  DT  DA  DG  DG  DG  DT              
SEQRES   1 B   12  BRU  DA  DG  DG  DG BRU  DT  DA  DG  DG  DG  DT              
MODRES 1K8P BRU A    1   DU                                                     
MODRES 1K8P BRU A    6   DU                                                     
MODRES 1K8P BRU B   13   DU                                                     
MODRES 1K8P BRU B   18   DU                                                     
HET    BRU  A   1      17                                                       
HET    BRU  A   6      20                                                       
HET    BRU  B  13      17                                                       
HET    BRU  B  18      20                                                       
HET      K  A  25       1                                                       
HET      K  A  26       1                                                       
HET     NA  A  27       1                                                       
HETNAM     BRU 5-BROMO-2'-DEOXYURIDINE-5'-MONOPHOSPHATE                         
HETNAM       K POTASSIUM ION                                                    
HETNAM      NA SODIUM ION                                                       
FORMUL   1  BRU    4(C9 H12 BR N2 O8 P)                                         
FORMUL   3    K    2(K 1+)                                                      
FORMUL   5   NA    NA 1+                                                        
FORMUL   6  HOH   *50(H2 O)                                                     
LINK         O3' BRU A   1                 P    DA A   2     1555   1555  1.61  
LINK         O3'  DG A   5                 P   BRU A   6     1555   1555  1.62  
LINK         O3' BRU A   6                 P    DT A   7     1555   1555  1.61  
LINK         O3' BRU B  13                 P    DA B  14     1555   1555  1.61  
LINK         O3'  DG B  17                 P   BRU B  18     1555   1555  1.61  
LINK         O3' BRU B  18                 P    DT B  19     1555   1555  1.63  
LINK         O6   DG A   3                 K     K A  26     1555   1555  2.81  
LINK         O6   DG A   4                 K     K A  25     1555   1555  2.61  
LINK         O6   DG A   4                 K     K A  26     1555   1555  2.85  
LINK         O6   DG A   5                 K     K A  25     1555   1555  2.44  
LINK         O4   DT A   7                NA    NA A  27     1555   1555  2.86  
LINK         O6   DG A   9                 K     K A  26     1555   1555  2.72  
LINK         O6   DG A  10                 K     K A  25     1555   1555  2.80  
LINK         O6   DG A  10                 K     K A  26     1555   1555  2.85  
LINK         O6   DG A  11                 K     K A  25     1555   1555  2.53  
LINK         K     K A  25                 K     K A  26     1555   1555  3.48  
LINK         K     K A  25                 O6   DG B  16     1555   1555  2.97  
LINK         K     K A  25                 O6   DG B  17     1555   1555  2.72  
LINK         K     K A  25                 O6   DG B  22     1555   1555  2.85  
LINK         K     K A  25                 O6   DG B  23     1555   1555  2.80  
LINK         K     K A  26                 O6   DG B  15     1555   1555  2.87  
LINK         K     K A  26                 O6   DG B  16     1555   1555  2.64  
LINK         K     K A  26                 O6   DG B  21     1555   1555  2.86  
LINK         K     K A  26                 O6   DG B  22     1555   1555  2.87  
LINK         K     K A  26                 O   HOH B2024     1555   4557  3.14  
SITE     1 AC1  9  DG A   4   DG A   5   DG A  10   DG A  11                    
SITE     2 AC1  9   K A  26   DG B  16   DG B  17   DG B  22                    
SITE     3 AC1  9  DG B  23                                                     
SITE     1 AC2  9  DG A   3   DG A   4   DG A   9   DG A  10                    
SITE     2 AC2  9   K A  25   DG B  15   DG B  16   DG B  21                    
SITE     3 AC2  9  DG B  22                                                     
SITE     1 AC3  2  DG A   5   DT A   7                                          
CRYST1   56.607   56.607   40.546  90.00  90.00 120.00 P 31 2 1     12          
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      0.017666  0.010199  0.000000        0.00000                         
SCALE2      0.000000  0.020399  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.024663        0.00000                         
HETATM    1  N1  BRU A   1       6.841  13.739  44.059  1.00 64.25           N  
HETATM    2  C2  BRU A   1       7.050  15.056  44.394  1.00 53.85           C  
HETATM    3  N3  BRU A   1       8.075  15.665  43.713  1.00 51.30           N  
HETATM    4  C4  BRU A   1       8.883  15.088  42.754  1.00 48.32           C  
HETATM    5  C5  BRU A   1       8.599  13.700  42.459  1.00 46.13           C  
HETATM    6  C6  BRU A   1       7.604  13.092  43.113  1.00 59.37           C  
HETATM    7  O2  BRU A   1       6.386  15.646  45.228  1.00 61.93           O  
HETATM    8  O4  BRU A   1       9.774  15.732  42.206  1.00 50.51           O  
HETATM    9 BR   BRU A   1       9.686  12.900  41.159  1.00 31.45          BR  
HETATM   10  C1' BRU A   1       5.748  13.041  44.767  1.00 70.99           C  
HETATM   11  C2' BRU A   1       4.349  13.451  44.406  1.00 73.19           C  
HETATM   12  C3' BRU A   1       3.718  12.214  43.828  1.00 72.68           C  
HETATM   13  C4' BRU A   1       4.660  11.066  44.147  1.00 72.07           C  
HETATM   14  O3' BRU A   1       2.437  12.001  44.435  1.00 76.46           O  
HETATM   15  O4' BRU A   1       5.874  11.643  44.660  1.00 71.68           O  
HETATM   16  C5' BRU A   1       4.991  10.156  42.987  1.00 75.23           C  
HETATM   17  O5' BRU A   1       6.415  10.060  42.876  1.00 91.93           O