HEADER DNA 19-APR-05 1ZEX TITLE CCG A-DNA COMPND MOL_ID: 1; COMPND 2 MOLECULE: 5'-D(*CP*CP*CP*GP*GP*CP*CP*GP*GP*G)-3'; COMPND 3 CHAIN: A, B; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 OTHER_DETAILS: DNA WAS SYNTHESIZED ON AN APPLIED BIOSYSTEMS DNA SOURCE 4 SYNTHESIZER USING PHOSPHORAMIDITE CHEMISTRY, WITH THE TRITYL- SOURCE 5 PROTECTING GROUP LEFT INTACT AT THE 5'- TERMINAL NUCLEOTIDE THEN SOURCE 6 DEPROTECTED BY TREATMENT WITH 3% ACETIC ACID FOR FIFTEEN MINUTES, SOURCE 7 NEUTRALIZED WITH AMMONIUM HYDROXIDE, AND DESALTED ON A SIGMA G-25 SOURCE 8 SEPHADEX COLUMN. KEYWDS CRYSTALLOGRAPHIC SCREEN, DNA STRUCTURE, HOLLIDAY JUNCTION, MOLECULAR KEYWDS 2 STRUCTURE, DNA EXPDTA X-RAY DIFFRACTION AUTHOR F.A.HAYS,A.T.TEEGARDEN,Z.J.R.JONES,M.HARMS,D.RAUP,J.WATSON, AUTHOR 2 E.CAVALIERE,P.S.HO REVDAT 5 03-APR-24 1ZEX 1 REMARK REVDAT 4 14-FEB-24 1ZEX 1 REMARK REVDAT 3 11-OCT-17 1ZEX 1 REMARK REVDAT 2 24-FEB-09 1ZEX 1 VERSN REVDAT 1 10-MAY-05 1ZEX 0 JRNL AUTH F.A.HAYS,A.TEEGARDEN,Z.J.JONES,M.HARMS,D.RAUP,J.WATSON, JRNL AUTH 2 E.CAVALIERE,P.S.HO JRNL TITL HOW SEQUENCE DEFINES STRUCTURE: A CRYSTALLOGRAPHIC MAP OF JRNL TITL 2 DNA STRUCTURE AND CONFORMATION. JRNL REF PROC.NATL.ACAD.SCI.USA V. 102 7157 2005 JRNL REFN ISSN 0027-8424 JRNL PMID 15870206 JRNL DOI 10.1073/PNAS.0409455102 REMARK 2 REMARK 2 RESOLUTION. 1.65 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.2.0003 REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 REFINEMENT TARGET : MAXIMUM LIKELIHOOD REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.65 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 16.39 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 100.0 REMARK 3 NUMBER OF REFLECTIONS : 5137 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) : 0.248 REMARK 3 R VALUE (WORKING SET) : 0.240 REMARK 3 FREE R VALUE : 0.250 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.800 REMARK 3 FREE R VALUE TEST SET COUNT : 622 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) : 1.65 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.69 REMARK 3 REFLECTION IN BIN (WORKING SET) : 288 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 100.0 REMARK 3 BIN R VALUE (WORKING SET) : 0.2680 REMARK 3 BIN FREE R VALUE SET COUNT : 34 REMARK 3 BIN FREE R VALUE : 0.3500 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 0 REMARK 3 NUCLEIC ACID ATOMS : 404 REMARK 3 HETEROGEN ATOMS : 0 REMARK 3 SOLVENT ATOMS : 51 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 7.18 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 0.37000 REMARK 3 B22 (A**2) : 0.00000 REMARK 3 B33 (A**2) : -0.37000 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): 0.164 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.132 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.093 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 2.716 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.845 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.833 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 452 ; 0.006 ; 0.021 REMARK 3 BOND LENGTHS OTHERS (A): NULL ; NULL ; NULL REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 694 ; 1.292 ; 3.000 REMARK 3 BOND ANGLES OTHERS (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): NULL ; NULL ; NULL REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 78 ; 0.055 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 210 ; 0.003 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): 193 ; 0.188 ; 0.200 REMARK 3 NON-BONDED CONTACTS OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): 256 ; 0.268 ; 0.200 REMARK 3 NON-BONDED TORSION OTHERS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): 37 ; 0.231 ; 0.200 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): 35 ; 0.242 ; 0.200 REMARK 3 SYMMETRY VDW OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): 7 ; 0.192 ; 0.200 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): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 672 ; 0.713 ; 3.000 REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 694 ; 1.104 ; 4.500 REMARK 3 SIDE-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 LONG RANGE B REFINED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 LONG RANGE B OTHER ATOMS (A**2): NULL ; NULL ; NULL 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 : 1.20 REMARK 3 ION PROBE RADIUS : 0.80 REMARK 3 SHRINKAGE RADIUS : 0.80 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: THIS STRUCTURE IS NOT REFINED TO ITS REMARK 3 LOWEST R AND RFREE VALUES. PLEASE REFER TO CITED ARTICLE ABOVE REMARK 3 FOR MORE INFORMATION. REMARK 4 REMARK 4 1ZEX COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 25-APR-05. REMARK 100 THE DEPOSITION ID IS D_1000032640. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 21-OCT-03 REMARK 200 TEMPERATURE (KELVIN) : 103.0 REMARK 200 PH : 7.00 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 RUH3R REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.542 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS IV REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 5906 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.650 REMARK 200 RESOLUTION RANGE LOW (A) : 99.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 2.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 93.8 REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : 0.04900 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 16.0000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.65 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.71 REMARK 200 COMPLETENESS FOR SHELL (%) : 76.8 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : 0.15000 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 4.720 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: EPMR REMARK 200 STARTING MODEL: NDB ENTRY ADJ049 REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 33.80 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.90 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NA CACODYLATE, CACL2, SPERMINE, MPD IN REMARK 280 RESEVOIR, PH 7.0, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE REMARK 280 298K, PH 7.00 REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X+1/2,-Y,Z+1/2 REMARK 290 3555 -X,Y+1/2,-Z+1/2 REMARK 290 4555 X+1/2,-Y+1/2,-Z 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 11.97800 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 22.46650 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 22.56650 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 22.46650 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 11.97800 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 22.56650 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 0.00000 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 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 O HOH B 28 O HOH B 57 1.95 REMARK 500 N2 DG B 18 O HOH B 47 1.99 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 DC A 1 O4' - C1' - N1 ANGL. DEV. = 4.2 DEGREES REMARK 500 DC A 2 O4' - C1' - N1 ANGL. DEV. = 3.5 DEGREES REMARK 500 DC A 3 O4' - C1' - N1 ANGL. DEV. = 4.7 DEGREES REMARK 500 DC A 6 O4' - C1' - N1 ANGL. DEV. = 1.9 DEGREES REMARK 500 DC A 7 O4' - C1' - N1 ANGL. DEV. = 4.8 DEGREES REMARK 500 DG A 8 C4' - C3' - C2' ANGL. DEV. = -4.3 DEGREES REMARK 500 DG A 8 O4' - C1' - N9 ANGL. DEV. = 3.4 DEGREES REMARK 500 DG A 9 C4' - C3' - C2' ANGL. DEV. = -5.0 DEGREES REMARK 500 DG A 9 O4' - C1' - N9 ANGL. DEV. = 3.2 DEGREES REMARK 500 DG A 10 O4' - C1' - N9 ANGL. DEV. = 3.0 DEGREES REMARK 500 DC B 11 O4' - C1' - N1 ANGL. DEV. = 2.9 DEGREES REMARK 500 DG B 14 O4' - C1' - N9 ANGL. DEV. = 1.9 DEGREES REMARK 500 DC B 16 O4' - C4' - C3' ANGL. DEV. = -2.7 DEGREES REMARK 500 DC B 16 O4' - C1' - N1 ANGL. DEV. = 2.2 DEGREES REMARK 500 DC B 17 O4' - C1' - N1 ANGL. DEV. = 2.4 DEGREES REMARK 500 DG B 18 O4' - C4' - C3' ANGL. DEV. = -2.6 DEGREES REMARK 500 DG B 18 O4' - C1' - N9 ANGL. DEV. = 2.8 DEGREES REMARK 500 DG B 19 C4' - C3' - C2' ANGL. DEV. = -4.3 DEGREES REMARK 500 DG B 19 O4' - C1' - N9 ANGL. DEV. = 3.3 DEGREES REMARK 500 REMARK 500 REMARK: NULL REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1P4Y RELATED DB: PDB REMARK 900 RELATED ID: 1P4Z RELATED DB: PDB REMARK 900 RELATED ID: 1DCW RELATED DB: PDB REMARK 900 RELATED ID: 1DCV RELATED DB: PDB REMARK 900 RELATED ID: 1ZEW RELATED DB: PDB REMARK 900 RELATED ID: 1ZEY RELATED DB: PDB REMARK 900 RELATED ID: 1ZEZ RELATED DB: PDB REMARK 900 RELATED ID: 1ZF0 RELATED DB: PDB REMARK 900 RELATED ID: 1ZF1 RELATED DB: PDB REMARK 900 RELATED ID: 1ZF2 RELATED DB: PDB REMARK 900 RELATED ID: 1ZF3 RELATED DB: PDB REMARK 900 RELATED ID: 1ZF4 RELATED DB: PDB REMARK 900 RELATED ID: 1ZF5 RELATED DB: PDB REMARK 900 RELATED ID: 1ZF6 RELATED DB: PDB REMARK 900 RELATED ID: 1ZF7 RELATED DB: PDB REMARK 900 RELATED ID: 1ZF8 RELATED DB: PDB REMARK 900 RELATED ID: 1ZF9 RELATED DB: PDB REMARK 900 RELATED ID: 1ZFA RELATED DB: PDB REMARK 900 RELATED ID: 1ZFB RELATED DB: PDB REMARK 900 RELATED ID: 1ZFC RELATED DB: PDB REMARK 900 RELATED ID: 1ZFE RELATED DB: PDB REMARK 900 RELATED ID: 1ZFF RELATED DB: PDB REMARK 900 RELATED ID: 1ZFG RELATED DB: PDB REMARK 900 RELATED ID: 1ZFH RELATED DB: PDB REMARK 900 RELATED ID: 1ZFM RELATED DB: PDB DBREF 1ZEX A 1 10 PDB 1ZEX 1ZEX 1 10 DBREF 1ZEX B 11 20 PDB 1ZEX 1ZEX 11 20 SEQRES 1 A 10 DC DC DC DG DG DC DC DG DG DG SEQRES 1 B 10 DC DC DC DG DG DC DC DG DG DG FORMUL 3 HOH *51(H2 O) CRYST1 23.956 45.133 44.933 90.00 90.00 90.00 P 21 21 21 8 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 0.041740 0.000000 0.000000 0.00000 SCALE2 0.000000 0.022160 0.000000 0.00000 SCALE3 0.000000 0.000000 0.022250 0.00000