HEADER    DNA                                     24-OCT-11   3UBI              
TITLE     THE ABSENCE OF TERTIARY INTERACTIONS IN A SELF-ASSEMBLED DNA CRYSTAL  
TITLE    2 STRUCTURE                                                            
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: DNA (5'-D(*GP*AP*GP*CP*AP*GP*CP*CP*CP*GP*TP*AP*CP*TP*CP*G)-
COMPND   3 3');                                                                 
COMPND   4 CHAIN: A;                                                            
COMPND   5 FRAGMENT: THE 16 RESIDUES IS FROM OF THE FIRST PART OF A DNA MOLECULE
COMPND   6 USED IN EXPERIMENT, SEE REMARK 400 FOR DETAILS.;                     
COMPND   7 ENGINEERED: YES;                                                     
COMPND   8 MOL_ID: 2;                                                           
COMPND   9 MOLECULE: DNA (5'-                                                   
COMPND  10 D(P*CP*CP*GP*AP*GP*TP*AP*CP*GP*AP*CP*GP*AP*CP*AP*AP*G)-3');          
COMPND  11 CHAIN: D;                                                            
COMPND  12 FRAGMENT: SYMMETRICALLY- AND SEQUENTIALLY REPEATING UNIT OF A        
COMPND  13 CIRCULAR DNA MOLECULES, SEE REMARK 400 FOR DETAILS.;                 
COMPND  14 ENGINEERED: YES;                                                     
COMPND  15 MOL_ID: 3;                                                           
COMPND  16 MOLECULE: DNA (5'-D(*TP*CP*TP*GP*AP*TP*GP*AP*GP*GP*CP*TP*GP*C)-3');  
COMPND  17 CHAIN: B;                                                            
COMPND  18 ENGINEERED: YES;                                                     
COMPND  19 MOL_ID: 4;                                                           
COMPND  20 MOLECULE: DNA (5'-D(P*GP*CP*TP*TP*GP*TP*CP*GP*TP*TP*CP*AP*TP*CP*A)-  
COMPND  21 3');                                                                 
COMPND  22 CHAIN: C;                                                            
COMPND  23 FRAGMENT: THE 15 RESIDUES IS FROM OF THE LAST PART OF A DNA MOLECULE 
COMPND  24 USED IN EXPERIMENT, SEE REMARK 400 FOR DETAILS.;                     
COMPND  25 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 SYNTHETIC: YES;                                                      
SOURCE   3 MOL_ID: 2;                                                           
SOURCE   4 SYNTHETIC: YES;                                                      
SOURCE   5 MOL_ID: 3;                                                           
SOURCE   6 SYNTHETIC: YES;                                                      
SOURCE   7 MOL_ID: 4;                                                           
SOURCE   8 SYNTHETIC: YES                                                       
KEYWDS    NANOTECHNOLOGY, DNA CROSSOVER, DESIGNED CRYSTAL LATTICE, DNA          
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    N.NGUYEN,J.J.BIRKTOFT,R.SHA,T.WANG,J.ZHENG,P.E.CONSTANTINOU,          
AUTHOR   2 S.L.GINELL,Y.CHEN,C.MAO,N.C.SEEMAN                                   
REVDAT   2   28-FEB-24 3UBI    1       REMARK                                   
REVDAT   1   16-MAY-12 3UBI    0                                                
JRNL        AUTH   N.NGUYEN,J.J.BIRKTOFT,R.SHA,T.WANG,J.ZHENG,P.E.CONSTANTINOU, 
JRNL        AUTH 2 S.L.GINELL,Y.CHEN,C.MAO,N.C.SEEMAN                           
JRNL        TITL   THE ABSENCE OF TERTIARY INTERACTIONS IN A SELF-ASSEMBLED DNA 
JRNL        TITL 2 CRYSTAL STRUCTURE.                                           
JRNL        REF    J.MOL.RECOGNIT.               V.  25   234 2012              
JRNL        REFN                   ISSN 0952-3499                               
JRNL        PMID   22434713                                                     
JRNL        DOI    10.1002/JMR.2183                                             
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   J.ZHENG,J.J.BIRKTOFT,Y.CHEN,T.WANG,R.SHA,P.E.CONSTANTINOU,   
REMARK   1  AUTH 2 S.L.GINELL,C.MAO,N.C.SEEMAN                                  
REMARK   1  TITL   FROM MOLECULAR TO MACROSCOPIC VIA THE RATIONAL DESIGN OF A   
REMARK   1  TITL 2 SELF-ASSEMBLED 3D DNA CRYSTAL.                               
REMARK   1  REF    NATURE                        V. 461    74 2009              
REMARK   1  REFN                   ISSN 0028-0836                               
REMARK   1  PMID   19727196                                                     
REMARK   1  DOI    10.1038/NATURE08274                                          
REMARK   2                                                                      
REMARK   2 RESOLUTION.    6.80 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : PHENIX (PHENIX.REFINE: DEV_873)                      
REMARK   3   AUTHORS     : PAUL ADAMS,PAVEL AFONINE,VINCENT CHEN,IAN            
REMARK   3               : DAVIS,KRESHNA GOPAL,RALF GROSSE-KUNSTLEVE,           
REMARK   3               : LI-WEI HUNG,ROBERT IMMORMINO,TOM IOERGER,            
REMARK   3               : AIRLIE MCCOY,ERIK MCKEE,NIGEL MORIARTY,              
REMARK   3               : REETAL PAI,RANDY READ,JANE RICHARDSON,               
REMARK   3               : DAVID RICHARDSON,TOD ROMO,JIM SACCHETTINI,           
REMARK   3               : NICHOLAS SAUTER,JACOB SMITH,LAURENT                  
REMARK   3               : STORONI,TOM TERWILLIGER,PETER ZWART                  
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : MLHL                                          
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 6.80                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 49.07                          
REMARK   3   MIN(FOBS/SIGMA_FOBS)              : 0.240                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 86.9                           
REMARK   3   NUMBER OF REFLECTIONS             : 1413                           
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   R VALUE     (WORKING + TEST SET) : 0.140                           
REMARK   3   R VALUE            (WORKING SET) : 0.139                           
REMARK   3   FREE R VALUE                     : 0.152                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 9.980                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 141                             
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT (IN BINS).                           
REMARK   3   BIN  RESOLUTION RANGE  COMPL.    NWORK NFREE   RWORK  RFREE        
REMARK   3     1  0.0000 -  6.8046    0.87     1272   141  0.1385 0.1520        
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED        : FLAT BULK SOLVENT MODEL                       
REMARK   3   SOLVENT RADIUS     : 0.80                                          
REMARK   3   SHRINKAGE RADIUS   : 0.47                                          
REMARK   3   K_SOL              : 0.13                                          
REMARK   3   B_SOL              : 0.00                                          
REMARK   3                                                                      
REMARK   3  ERROR ESTIMATES.                                                    
REMARK   3   COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED)     : 0.000            
REMARK   3   PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 34.470           
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : NULL                           
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 67.13150                                             
REMARK   3    B22 (A**2) : 67.13150                                             
REMARK   3    B33 (A**2) : 811.92650                                            
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  TWINNING INFORMATION.                                               
REMARK   3   FRACTION: NULL                                                     
REMARK   3   OPERATOR: NULL                                                     
REMARK   3                                                                      
REMARK   3  DEVIATIONS FROM IDEAL VALUES.                                       
REMARK   3                 RMSD          COUNT                                  
REMARK   3   BOND      :  0.003           1416                                  
REMARK   3   ANGLE     :  0.814           2177                                  
REMARK   3   CHIRALITY :  0.036            246                                  
REMARK   3   PLANARITY :  0.001             62                                  
REMARK   3   DIHEDRAL  : 30.989            606                                  
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : NULL                                       
REMARK   3                                                                      
REMARK   3  NCS DETAILS                                                         
REMARK   3   NUMBER OF NCS GROUPS : NULL                                        
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 3UBI COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 04-NOV-11.                  
REMARK 100 THE DEPOSITION ID IS D_1000068546.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : NULL                               
REMARK 200  TEMPERATURE           (KELVIN) : 190                                
REMARK 200  PH                             : 8.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : NSLS                               
REMARK 200  BEAMLINE                       : X25                                
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.1                                
REMARK 200  MONOCHROMATOR                  : GRAPHITE                           
REMARK 200  OPTICS                         : GRAPHITE                           
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 315R                  
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : HKL-2000                           
REMARK 200  DATA SCALING SOFTWARE          : HKL-2000                           
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 1413                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : 6.805                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 49.069                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 100.0                              
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) : NULL                     
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: PHENIX                                                
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): NULL                                      
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): NULL                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: CRYSTALLIZATION CONDITIONS: GROWN BY     
REMARK 280  VAPOR DIFFUSION WHILE TREATED WITH A CONTROLLED TEMPERATURE         
REMARK 280  GRADIENT FROM 333 DEGS TO 293 DEGS., PH 8.5, VAPOR DIFFUSION,       
REMARK 280  SITTING DROP                                                        
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: H 3                              
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -Y,X-Y,Z                                                
REMARK 290       3555   -X+Y,-X,Z                                               
REMARK 290       4555   X+2/3,Y+1/3,Z+1/3                                       
REMARK 290       5555   -Y+2/3,X-Y+1/3,Z+1/3                                    
REMARK 290       6555   -X+Y+2/3,-X+1/3,Z+1/3                                   
REMARK 290       7555   X+1/3,Y+2/3,Z+2/3                                       
REMARK 290       8555   -Y+1/3,X-Y+2/3,Z+2/3                                    
REMARK 290       9555   -X+Y+1/3,-X+2/3,Z+2/3                                   
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        0.00000            
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        0.00000            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       84.99000            
REMARK 290   SMTRY2   4  0.000000  1.000000  0.000000       49.06900            
REMARK 290   SMTRY3   4  0.000000  0.000000  1.000000       29.54600            
REMARK 290   SMTRY1   5 -0.500000 -0.866025  0.000000       84.99000            
REMARK 290   SMTRY2   5  0.866025 -0.500000  0.000000       49.06900            
REMARK 290   SMTRY3   5  0.000000  0.000000  1.000000       29.54600            
REMARK 290   SMTRY1   6 -0.500000  0.866025  0.000000       84.99000            
REMARK 290   SMTRY2   6 -0.866025 -0.500000  0.000000       49.06900            
REMARK 290   SMTRY3   6  0.000000  0.000000  1.000000       29.54600            
REMARK 290   SMTRY1   7  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   7  0.000000  1.000000  0.000000       98.13800            
REMARK 290   SMTRY3   7  0.000000  0.000000  1.000000       59.09200            
REMARK 290   SMTRY1   8 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   8  0.866025 -0.500000  0.000000       98.13800            
REMARK 290   SMTRY3   8  0.000000  0.000000  1.000000       59.09200            
REMARK 290   SMTRY1   9 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   9 -0.866025 -0.500000  0.000000       98.13800            
REMARK 290   SMTRY3   9  0.000000  0.000000  1.000000       59.09200            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 300 REMARK: AUTHORS STATE THAT THE CRYSTAL IS AN INFINITE NETWORK        
REMARK 300 MADE FROM THREE DNA STRANDS THAT SELF-ASSOCIATE. IN THE CURRENT      
REMARK 300 ENTRY THE ASYMMETRIC UNIT IS COMPRISED OF 4 CHAINS, 3 OF WHICH       
REMARK 300 ARE FRAGMENTS OF LONGER DNA STRANDS. APPLYING THE SPACE GROUP H3     
REMARK 300 SYMMETRY OPERATORS (X, Y, Z,), (-Y, X-Y, Z), AND (-X+Y,-X,Z) TO      
REMARK 300 THE CONTENTS OF THE ASYMMETRIC UNIT GENERATES ONE TRIMERIC UNIT      
REMARK 300 OF THE SELF-ASSOCIATED DNA NETWORK. ADDITIONAL DETAILS ABOUT THE     
REMARK 300 CHEMICAL COMPOSITION AND ASSOCIATION ARE INCLUDED IN REMARK 400.     
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: DODECAMERIC                       
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, D, B, C                            
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 -0.500000 -0.866025  0.000000        0.00000            
REMARK 350   BIOMT2   2  0.866025 -0.500000  0.000000        0.00000            
REMARK 350   BIOMT3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   3 -0.500000  0.866025  0.000000        0.00000            
REMARK 350   BIOMT2   3 -0.866025 -0.500000  0.000000        0.00000            
REMARK 350   BIOMT3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 400                                                                      
REMARK 400 COMPOUND                                                             
REMARK 400 THE STRUCTURE UNIT IS GENERATED FROM 7 DNA STRANDS WHICH FORM A      
REMARK 400 NETWORK UNIT WITH INTERNAL 3-FOLD SYMMETRY. EXTENDING OF THE         
REMARK 400 STRUCTURE UNIT IN 3-D SPACE RESULTS THE CRYSTAL AT R3 SPACE GROUP    
REMARK 400 (REPRESENTED AS H3). THE DNA SEQUENCES OF THE 7 STRANDS ARE: (#1) 3  
REMARK 400 STRANDS 5'-D(*GP*AP*GP*CP*AP*GP*CP*CP*CP*GP*TP*AP*CP*TP*CP*GP*GP*    
REMARK 400 CP*TP*TP*GP*TP*CP*GP*TP*TP*CP*AP*TP*CP*A)-3'; (#2) 1 STRANDS 5'-D(P* 
REMARK 400 CP*CP*GP*AP*GP*TP*AP*CP*GP*AP*CP*GP*AP*CP*AP*AP*GP*CP*CP*GP*AP*GP*   
REMARK 400 TP*AP*CP*GP*AP*CP*GP*AP*CP*AP*AP*GP*CP*CP*GP*AP*GP*TP*AP*CP*GP*AP*   
REMARK 400 CP*GP*AP*CP*AP*AP*G)-3'; (#3) 3 STRANDS 5'-D(*TP*CP*TP*GP*AP*TP*GP*  
REMARK 400 AP*GP*GP*CP*TP*GP*C)-3'). THE ASYMMETRIC UNIT IS COMPRISED OF THE    
REMARK 400 FIRST 16 NUCLEOTIDES OF THE FULL #1 STRAND (CHAIN A), BY THELAST 15  
REMARK 400 RESIDUES OF THE FULL #1 STRAND (CHAIN C), BY THE FIRST 17            
REMARK 400 NUCLEOTIDES OF THE #2 STRAND (CHAIN D) AND BY #3 STRAND (CHAIN B).   
REMARK 400 CHAINS A (FIRST 16 RESIDUES OF STRAND #1) AND C (NEXT 15 RESIDUES    
REMARK 400 OF STRAND #1) TOGETHER FORM THE FIRST DNA STRAND (#3) OF THE         
REMARK 400 EXPERIMENT. THIS DNA STRAND SPANS TWO ASYMMETRIC UNITS- HENCE IT     
REMARK 400 WAS DIVIDED INTO THE CURRENT CHAINS A AND C FOR CONVENIENT           
REMARK 400 REPRESENTATION AND CRYSTALLOGRAPHIC COMPUTING. CHAIN A (1_555) IS    
REMARK 400 COVALENTLY LINKED TO CHAIN C OF ANOTHER ASYMMETRIC UNIT (3_555);     
REMARK 400 AND CHAIN C (1_555) IS COVALENTLY LINKED TO CHAIN A OF ANOTHER       
REMARK 400 ASYMMETRIC UNIT (2_555). THE #2 STRAND FORM A CIRCULAR DNA MOLECULE  
REMARK 400 AS A CONSEQUENCE OF INTERNAL 3-FOLD SYMMETRY OF THE TRIANGLE CHAIN   
REMARK 400 D IN THE ASYMMETRIC UNIT REPRESENTS ONE OF THESE REPEATING UNITS.    
REMARK 400 IT HAS 3 SYMMETRIC AND SEQUENTIAL REPEATING UNITS THAT ARE           
REMARK 400 COVALENTLY LINKED TO EACH OTHER VIA THE O3' END OF RESIDUE 17D TO    
REMARK 400 THE O5' END OF RESIDUE 1D) CHAIN D (1_555) IS COVALENTLY LINKED TO   
REMARK 400 CHAIN D OF TWO NEIGHBOURING ASYMMETRIC UNITS (2_555) AND (3_555).    
REMARK 400 THE SELECTION OF RESIDUES FROM THE DNA #2 AND #3 ARE DICTATED BY     
REMARK 400 THEIR PROXIMITY (BASE PAIRING) TO CHAINS A AND C. CHAIN B IN THE     
REMARK 400 ASYMMETRIC UNIT REPRESENTS THE THIRD OF THESE REPEATING UNITS.       
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS                                             
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC             
REMARK 500 SYMMETRY ARE IN CLOSE CONTACT.  AN ATOM LOCATED WITHIN 0.15          
REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A           
REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375             
REMARK 500 INSTEAD OF REMARK 500.  ATOMS WITH NON-BLANK ALTERNATE               
REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS.            
REMARK 500                                                                      
REMARK 500 DISTANCE CUTOFF:                                                     
REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS              
REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS                  
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI  SSYMOP   DISTANCE          
REMARK 500   O3'   DG A    16     P     DG C    17     2555     2.11            
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     DT A  11   O4' -  C1' -  N1  ANGL. DEV. =   2.6 DEGREES          
REMARK 500     DC A  13   C3' -  C2' -  C1' ANGL. DEV. =  -4.8 DEGREES          
REMARK 500     DC A  13   O4' -  C1' -  N1  ANGL. DEV. =   3.2 DEGREES          
REMARK 500     DT A  14   O4' -  C1' -  N1  ANGL. DEV. =   2.5 DEGREES          
REMARK 500     DG A  16   O4' -  C1' -  N9  ANGL. DEV. =   2.1 DEGREES          
REMARK 500     DG D  17   O4' -  C1' -  N9  ANGL. DEV. =   2.9 DEGREES          
REMARK 500     DT C  20   O4' -  C1' -  N1  ANGL. DEV. =   2.0 DEGREES          
REMARK 500     DC C  27   O4' -  C1' -  N1  ANGL. DEV. =   2.0 DEGREES          
REMARK 500     DC C  30   O4' -  C1' -  N1  ANGL. DEV. =   2.1 DEGREES          
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
DBREF  3UBI A    1    16  PDB    3UBI     3UBI             1     16             
DBREF  3UBI D    1    17  PDB    3UBI     3UBI             1     17             
DBREF  3UBI B    1    14  PDB    3UBI     3UBI             1     14             
DBREF  3UBI C   17    31  PDB    3UBI     3UBI            17     31             
SEQRES   1 A   16   DG  DA  DG  DC  DA  DG  DC  DC  DC  DG  DT  DA  DC          
SEQRES   2 A   16   DT  DC  DG                                                  
SEQRES   1 D   17   DC  DC  DG  DA  DG  DT  DA  DC  DG  DA  DC  DG  DA          
SEQRES   2 D   17   DC  DA  DA  DG                                              
SEQRES   1 B   14   DT  DC  DT  DG  DA  DT  DG  DA  DG  DG  DC  DT  DG          
SEQRES   2 B   14   DC                                                          
SEQRES   1 C   15   DG  DC  DT  DT  DG  DT  DC  DG  DT  DT  DC  DA  DT          
SEQRES   2 C   15   DC  DA                                                      
CRYST1  169.980  169.980   88.638  90.00  90.00 120.00 H 3           9          
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      0.005883  0.003397  0.000000        0.00000                         
SCALE2      0.000000  0.006793  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.011282        0.00000