3GBI - Header Asymmetric Unit

HEADER DNA 19-FEB-09 3GBI

TITLE THE RATIONAL DESIGN AND STRUCTURAL ANALYSIS OF A SELF- TITLE 2 ASSEMBLED THREE-DIMENSIONAL DNA CRYSTAL

COMPND MOL_ID: 1; COMPND 2 MOLECULE: DNA (5'- COMPND 3 D(*GP*AP*GP*CP*AP*GP*CP*CP*TP*GP*TP*AP*CP*GP*GP*AP*CP*AP*TP COMPND 4 *CP*A)-3'); COMPND 5 CHAIN: A; COMPND 6 ENGINEERED: YES; COMPND 7 MOL_ID: 2; COMPND 8 MOLECULE: DNA (5'-D(P*CP*CP*GP*TP*AP*CP*A)-3'); COMPND 9 CHAIN: B; COMPND 10 FRAGMENT: SYMMETRICALLY- AND SEQUENTIALLY REPEATING UNIT OF COMPND 11 A CIRCULAR DNA MOLECULES, SEE REMARK 400 FOR DETAILS.; COMPND 12 ENGINEERED: YES; COMPND 13 MOL_ID: 3; COMPND 14 MOLECULE: DNA (5'-D(P*GP*GP*CP*TP*GP*C)-3'); COMPND 15 CHAIN: C; COMPND 16 FRAGMENT: LAST 6 RESIDUES OF A DNA MOLECULE USED IN COMPND 17 EXPERIMENT, SEE REMARK 400 FOR DETAILS.; COMPND 18 ENGINEERED: YES; COMPND 19 MOL_ID: 4; COMPND 20 MOLECULE: DNA (5'-D(*TP*CP*TP*GP*AP*TP*GP*T)-3'); COMPND 21 CHAIN: D; COMPND 22 FRAGMENT: FIRST 8 RESIDUES OF A DNA MOLECULE USED IN COMPND 23 EXPERIMENT, SEE REMARK 400 FOR DETAILS.; COMPND 24 ENGINEERED: YES

SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 OTHER_DETAILS: DNA STRANDS WERE SYNTHESIZED BY STANDARD SOURCE 4 PHOSPHORAMIDITE TECHNIQUES ON AN APPLIED BIOSYSTEMS 394 DNA SOURCE 5 SYNTHESIZER USING TRITYL-ON MODE.; SOURCE 6 MOL_ID: 2; SOURCE 7 SYNTHETIC: YES; SOURCE 8 OTHER_DETAILS: DNA STRANDS WERE SYNTHESIZED BY STANDARD SOURCE 9 PHOSPHORAMIDITE TECHNIQUES ON AN APPLIED BIOSYSTEMS 394 DNA SOURCE 10 SYNTHESIZER USING TRITYL-ON; SOURCE 11 MOL_ID: 3; SOURCE 12 SYNTHETIC: YES; SOURCE 13 OTHER_DETAILS: DNA STRANDS WERE SYNTHESIZED BY STANDARD SOURCE 14 PHOSPHORAMIDITE TECHNIQUES ON AN APPLIED BIOSYSTEMS 394 DNA SOURCE 15 SYNTHESIZER USING TRITYL-ON; SOURCE 16 MOL_ID: 4; SOURCE 17 SYNTHETIC: YES; SOURCE 18 OTHER_DETAILS: DNA STRANDS WERE SYNTHESIZED BY STANDARD SOURCE 19 PHOSPHORAMIDITE TECHNIQUES ON AN APPLIED BIOSYSTEMS 394 DNA SOURCE 20 SYNTHESIZER USING TRITYL-ON

KEYWDS NANOTECHNOLOGY, DNA CRYSTALS, DNA CROSSOVER, DESIGNED KEYWDS 2 CRYSTAL LATTICE

EXPDTA X-RAY DIFFRACTION

AUTHOR J.J.BIRKTOFT,J.ZHENG,N.C.SEEMAN

REVDAT 2 22-SEP-09 3GBI 1 JRNL REVDAT 1 01-SEP-09 3GBI 0

JRNL AUTH J.ZHENG,J.J.BIRKTOFT,Y.CHEN,T.WANG,R.SHA, JRNL AUTH 2 P.E.CONSTANTINOU,S.L.GINELL,C.MAO,N.C.SEEMAN JRNL TITL FROM MOLECULAR TO MACROSCOPIC VIA THE RATIONAL JRNL TITL 2 DESIGN OF A SELF-ASSEMBLED 3D DNA CRYSTAL. JRNL REF NATURE V. 461 74 2009 JRNL REFN ISSN 0028-0836 JRNL PMID 19727196 JRNL DOI 10.1038/NATURE08274

REMARK 1

REMARK 2 REMARK 2 RESOLUTION. 4.02 ANGSTROMS.

REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX (PHENIX.REFINE) REMARK 3 AUTHORS : PAUL ADAMS,PAVEL AFONINE,VICENT CHEN,IAN REMARK 3 : DAVIS,KRESHNA GOPAL,RALF GROSSE- REMARK 3 : KUNSTLEVE,LI-WEI HUNG,ROBERT IMMORMINO, REMARK 3 : TOM IOERGER,AIRLIE MCCOY,ERIK MCKEE,NIGEL REMARK 3 : MORIARTY,REETAL PAI,RANDY READ,JANE REMARK 3 : RICHARDSON,DAVID RICHARDSON,TOD ROMO,JIM REMARK 3 : SACCHETTINI,NICHOLAS SAUTER,JACOB SMITH, REMARK 3 : LAURENT STORONI,TOM TERWILLIGER,PETER REMARK 3 : ZWART REMARK 3 REMARK 3 REFINEMENT TARGET : ML REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 4.02 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 17.29 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 0.140 REMARK 3 COMPLETENESS FOR RANGE (%) : 61.1 REMARK 3 NUMBER OF REFLECTIONS : 2022 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.246 REMARK 3 R VALUE (WORKING SET) : 0.240 REMARK 3 FREE R VALUE : 0.309 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.040 REMARK 3 FREE R VALUE TEST SET COUNT : 203 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 - 4.0180 0.61 1819 203 0.2400 0.3090 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : FLAT BULK SOLVENT MODEL REMARK 3 SOLVENT RADIUS : NULL REMARK 3 SHRINKAGE RADIUS : NULL REMARK 3 K_SOL : 0.09 REMARK 3 B_SOL : 20.00 REMARK 3 REMARK 3 ERROR ESTIMATES. REMARK 3 COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED) : 0.830 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : NULL REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 199.88 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 80.00 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 63.25200 REMARK 3 B22 (A**2) : 63.25200 REMARK 3 B33 (A**2) : 227.85100 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 : 0.016 1052 REMARK 3 ANGLE : 1.364 1465 REMARK 3 CHIRALITY : 0.058 166 REMARK 3 PLANARITY : 0.002 42 REMARK 3 DIHEDRAL : 31.823 406 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: IN REALITY ALL 3211 MEASURED REMARK 3 REFLECTIONS WERE USED IN THE REFINEMENT (USING PHENIX). OF REMARK 3 THESE ONLY 2022 HAD FOBS/SIGMA_FOBS >/= 0.140.

REMARK 4 REMARK 4 3GBI COMPLIES WITH FORMAT V. 3.20, 01-DEC-08

REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 30-MAR-09. REMARK 100 THE RCSB ID CODE IS RCSB051659.

REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 17-JUN-08 REMARK 200 TEMPERATURE (KELVIN) : NULL REMARK 200 PH : 8.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : APS REMARK 200 BEAMLINE : 19-ID REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.0 REMARK 200 MONOCHROMATOR : GRAPHITE REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 315R REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-3000 REMARK 200 DATA SCALING SOFTWARE : HKL-3000 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 3211 REMARK 200 RESOLUTION RANGE HIGH (A) : 4.010 REMARK 200 RESOLUTION RANGE LOW (A) : 17.300 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 96.1 REMARK 200 DATA REDUNDANCY : 7.300 REMARK 200 R MERGE (I) : 0.06700 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 10.9000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 4.00 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 4.07 REMARK 200 COMPLETENESS FOR SHELL (%) : 100.0 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: NULL REMARK 200 SOFTWARE USED: HKL2MAP 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: GROWN BY VAPOR DIFFUSION WHILE REMARK 280 TREATED WITH A CONTROLLED TEMPERATURE GRADIENT FROM 333 DEGS REMARK 280 TO 293 DEGS., PH 8.5, VAPOR DIFFUSION, 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 53.58050 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 30.93472 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 31.04800 REMARK 290 SMTRY1 5 -0.500000 -0.866025 0.000000 53.58050 REMARK 290 SMTRY2 5 0.866025 -0.500000 0.000000 30.93472 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 31.04800 REMARK 290 SMTRY1 6 -0.500000 0.866025 0.000000 53.58050 REMARK 290 SMTRY2 6 -0.866025 -0.500000 0.000000 30.93472 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 31.04800 REMARK 290 SMTRY1 7 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 7 0.000000 1.000000 0.000000 61.86943 REMARK 290 SMTRY3 7 0.000000 0.000000 1.000000 62.09600 REMARK 290 SMTRY1 8 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 8 0.866025 -0.500000 0.000000 61.86943 REMARK 290 SMTRY3 8 0.000000 0.000000 1.000000 62.09600 REMARK 290 SMTRY1 9 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 9 -0.866025 -0.500000 0.000000 61.86943 REMARK 290 SMTRY3 9 0.000000 0.000000 1.000000 62.09600 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: HEPTAMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, C, D 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 REMARK 400 A NETWORK UNIT WITH INTERNAL 3-FOLD SYMMETRY. EXTENDING OF THE REMARK 400 STRUCTURE UNIT IN 3-D SPACE RESULTS THE CRYSTAL AT R3 SPACE REMARK 400 GROUP (REPRESENTED AS H3). THE DNA SEQUENCES OF THE 7 STRANDS REMARK 400 ARE: REMARK 400 (#1) 3 STRANDS REMARK 400 5'-D(*GP*AP*GP*CP*AP*GP*CP*CP*TP*GP*TP*AP*CP*GP*GP*AP*CP*AP*TP REMARK 400 *CP*A)-3' REMARK 400 REMARK 400 (#2) 1 STRAND REMARK 400 5'-D(*TP*AP*CP*AP*CP*CP*GP*TP*AP*CP*AP*CP*CP*GP*TP*AP*CP*AP*CP* REMARK 400 CP*G)-3' REMARK 400 REMARK 400 (#3) 3 STRANDS REMARK 400 5'-D(*TP*CP*TP*GP*AP*TP*GP*TP*GP*GP*CP*TP*GP*C)-3' REMARK 400 REMARK 400 THE ASYMMETRIC UNIT IS COMPRISED OF ONE FULL #1 STRAND (CHAIN A), REMARK 400 7-RESIDUE REPEATING UNIT OF #2 STRAND (CHAIN B) AND TWO FRAGMENTS REMARK 400 OF #3 STRAND (CHAINS C AND D). REMARK 400 REMARK 400 THE #2 STRAND SELF-ASSOICATES TO FORM A CIRCULAR DNA MOLECULE REMARK 400 WITH INTERNAL 3-FOLD SYMMETRY. IT HAS 3 SYMMETRIC AND SEQUENTIAL REMARK 400 REPEATING UNITS. CHAIN B IN THE ASYMMETRIC UNIT REPRESENTS ONE REMARK 400 OF THESE REPEATING UNITS. REMARK 400 REMARK 400 CHAINS D (FIRST 8 RESIDUES OF STRAND #3) AND C (NEXT 6 RESIDUES REMARK 400 OF STRAND #3) TOGETHER FORM THE THIRD 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 C AND D FOR CONVENIENT REMARK 400 REPRESENTATION. CHAIN C (1_555) IS COVALENTLY LINKED TO REMARK 400 CHAIN D OF ANOTHER ASYMMETRIC UNIT (3_555); AND CHAIN D (1_555) REMARK 400 IS COVALENTLY LINKED TO CHAIN C OF ANOTHER ASYMMETRIC UNIT REMARK 400 (2_555). REMARK 400 REMARK 400 THE SELECTION OF RESIDUES FROM THE DNA #2 AND #3 REMARK 400 ARE DICTATED BY THEIR PROXIMITY (BASE PAIRING) TO CHAIN A.

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 D 106 C5 DT D 106 C7 0.036 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 102 O4' - C1' - N9 ANGL. DEV. = 4.3 DEGREES REMARK 500 DG A 103 O4' - C1' - N9 ANGL. DEV. = 4.3 DEGREES REMARK 500 DA A 105 C3' - C2' - C1' ANGL. DEV. = -5.2 DEGREES REMARK 500 DA A 105 O4' - C1' - N9 ANGL. DEV. = 2.6 DEGREES REMARK 500 DC A 107 C1' - O4' - C4' ANGL. DEV. = -6.2 DEGREES REMARK 500 DC A 107 C3' - C2' - C1' ANGL. DEV. = -5.1 DEGREES REMARK 500 DC A 107 O4' - C1' - N1 ANGL. DEV. = 4.4 DEGREES REMARK 500 DT A 111 O4' - C1' - N1 ANGL. DEV. = 1.9 DEGREES REMARK 500 DA A 116 O4' - C1' - N9 ANGL. DEV. = 3.7 DEGREES REMARK 500 DC A 117 O4' - C1' - N1 ANGL. DEV. = 2.8 DEGREES REMARK 500 DA A 118 O4' - C4' - C3' ANGL. DEV. = -3.1 DEGREES REMARK 500 DT A 119 O4' - C1' - N1 ANGL. DEV. = 1.9 DEGREES REMARK 500 DA A 121 C3' - C2' - C1' ANGL. DEV. = -6.8 DEGREES REMARK 500 DA A 121 O4' - C1' - N9 ANGL. DEV. = 1.9 DEGREES REMARK 500 DA B 123 C3' - C2' - C1' ANGL. DEV. = -6.9 DEGREES REMARK 500 DA B 123 O4' - C1' - N9 ANGL. DEV. = 3.4 DEGREES REMARK 500 DG C 210 O4' - C1' - N9 ANGL. DEV. = 3.2 DEGREES REMARK 500 DC C 211 O4' - C1' - N1 ANGL. DEV. = 3.0 DEGREES REMARK 500 DG C 213 O4' - C1' - N9 ANGL. DEV. = 3.2 DEGREES REMARK 500 DC D 102 O4' - C1' - N1 ANGL. DEV. = 2.0 DEGREES REMARK 500 DT D 103 O4' - C1' - N1 ANGL. DEV. = 3.5 DEGREES REMARK 500 DG D 104 C3' - C2' - C1' ANGL. DEV. = -6.0 DEGREES REMARK 500 DA D 105 C3' - C2' - C1' ANGL. DEV. = -5.1 DEGREES REMARK 500 DT D 106 C1' - O4' - C4' ANGL. DEV. = -6.4 DEGREES REMARK 500 DT D 106 C3' - C2' - C1' ANGL. DEV. = -5.1 DEGREES REMARK 500 DT D 106 O4' - C1' - N1 ANGL. DEV. = 2.8 DEGREES REMARK 500 DT D 108 O4' - C1' - N1 ANGL. DEV. = 1.9 DEGREES REMARK 500 REMARK 500 REMARK: NULL

DBREF 3GBI A 101 121 PDB 3GBI 3GBI 1 21 DBREF 3GBI B 119 125 PDB 3GBI 3GBI 1 7 DBREF 3GBI C 209 214 PDB 3GBI 3GBI 1 6 DBREF 3GBI D 101 108 PDB 3GBI 3GBI 1 8

SEQRES 1 A 21 DG DA DG DC DA DG DC DC DT DG DT DA DC SEQRES 2 A 21 DG DG DA DC DA DT DC DA SEQRES 1 B 7 DC DC DG DT DA DC DA SEQRES 1 C 6 DG DG DC DT DG DC SEQRES 1 D 8 DT DC DT DG DA DT DG DT

LINK P DC B 119 O3' DA B 125 1555 2555 1.61 LINK O3' DA B 125 P DC B 119 1555 3555 1.61 LINK P DG C 209 O3' DT D 108 1555 3555 1.61 LINK O3' DT D 108 P DG C 209 1555 2555 1.61

CRYST1 107.161 107.161 93.144 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 0.009332 0.005388 0.000000 0.00000

SCALE2 0.000000 0.010775 0.000000 0.00000

SCALE3 0.000000 0.000000 0.010736 0.00000