HEADER DNA 04-MAR-04 1SK5 TITLE THE ULTRA-HIGH RESOLUTION STRUCTURE OF D(CTTTTAAAAG)2: MODULATION OF TITLE 2 BENDING BY T-A STEPS AND ITS ROLE IN DNA RECOGNITION COMPND MOL_ID: 1; COMPND 2 MOLECULE: 5'-D(*CP*TP*TP*TP*TP*AP*AP*AP*AP*G)-3'; COMPND 3 CHAIN: A, B; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 OTHER_DETAILS: SYNTHESIZED BY THE SOLID-PHASE PHOSPHORAMIDATE METHOD SOURCE 4 ON AN EPPENDORF ECOSYN D300 SYNTHESIZER KEYWDS DNA/DNA DOUBLE HELIX; POPYPURINE TRACT SEQUENCE OF HIV-1, DNA EXPDTA X-RAY DIFFRACTION AUTHOR G.W.HAN,D.LANGS,M.L.KOPKA,R.E.DICKERSON REVDAT 4 14-FEB-24 1SK5 1 REMARK LINK REVDAT 3 14-FEB-18 1SK5 1 REMARK REVDAT 2 24-FEB-09 1SK5 1 VERSN REVDAT 1 21-JUN-05 1SK5 0 JRNL AUTH G.W.HAN,D.LANGS,M.L.KOPKA,R.E.DICKERSON JRNL TITL THE ULTRA-HIGH RESOLUTION STRUCTURE OF D(CTTTTAAAAG)2: JRNL TITL 2 MODULATION OF BENDING BY T-A STEPS AND ITS ROLE IN DNA JRNL TITL 3 RECOGNITION JRNL REF TO BE PUBLISHED JRNL REFN REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH G.W.HAN REMARK 1 TITL DIRECT-METHODS DETERMINATION OF AN RNA/DNA HYBRID DECAMER AT REMARK 1 TITL 2 1.15A RESOLUTION REMARK 1 REF ACTA CRYSTALLOGR.,SECT.D V. 57 213 2001 REMARK 1 REFN ISSN 0907-4449 REMARK 1 PMID 11173466 REMARK 1 DOI 10.1107/S0907444900017595 REMARK 1 REFERENCE 2 REMARK 1 AUTH M.L.KOPKA,L.LAVELLE,G.W.HAN,H.L.NG,R.E.DICKERSON REMARK 1 TITL AN UNUSUAL SUGAR CONFORMATION IN THE STRUCTURE OF AN RNA/DNA REMARK 1 TITL 2 DECAMER OF THE POLYPURINE TRACT MAY AFFECT RECOGNITION BY REMARK 1 TITL 3 RNASE H REMARK 1 REF J.MOL.BIOL. V. 334 653 2003 REMARK 1 REFN ISSN 0022-2836 REMARK 1 PMID 14636594 REMARK 1 DOI 10.1016/J.JMB.2003.09.057 REMARK 1 REFERENCE 3 REMARK 1 AUTH G.W.HAN,M.L.KOPKA,D.CASCIO,K.GRZESKOWIAK,R.E.DICKERSON REMARK 1 TITL STRUCTURE OF A DNA ANALOG OF THE PRIMER FOR HIV-1 RT SECOND REMARK 1 TITL 2 STRAND SYNTHESIS REMARK 1 REF J.MOL.BIOL. V. 269 811 1997 REMARK 1 REFN ISSN 0022-2836 REMARK 1 PMID 9223643 REMARK 1 DOI 10.1006/JMBI.1997.1085 REMARK 2 REMARK 2 RESOLUTION. 0.89 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) : 0.89 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 50.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 5.0 REMARK 3 CROSS-VALIDATION METHOD : THROUGHOUT 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) : NULL REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : 0.126 REMARK 3 FREE R VALUE (NO CUTOFF) : 0.144 REMARK 3 FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET COUNT (NO CUTOFF) : 1507 REMARK 3 TOTAL NUMBER OF REFLECTIONS (NO CUTOFF) : 32054 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 : 404 REMARK 3 HETEROGEN ATOMS : 8 REMARK 3 SOLVENT ATOMS : 156 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) : 0.008 REMARK 3 ANGLE DISTANCES (A) : 0.026 REMARK 3 SIMILAR DISTANCES (NO TARGET VALUES) (A) : NULL REMARK 3 DISTANCES FROM RESTRAINT PLANES (A) : NULL REMARK 3 ZERO CHIRAL VOLUMES (A**3) : NULL REMARK 3 NON-ZERO CHIRAL VOLUMES (A**3) : NULL REMARK 3 ANTI-BUMPING DISTANCE RESTRAINTS (A) : NULL 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 : NULL REMARK 3 SPECIAL CASE: NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1SK5 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 10-MAR-04. REMARK 100 THE DEPOSITION ID IS D_1000021781. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : NULL REMARK 200 TEMPERATURE (KELVIN) : 113 REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : NSLS REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.9000 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 4 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 32054 REMARK 200 RESOLUTION RANGE HIGH (A) : 0.890 REMARK 200 RESOLUTION RANGE LOW (A) : 50.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : NULL REMARK 200 DATA REDUNDANCY : 10.20 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : 0.07300 REMARK 200 FOR THE DATA SET : NULL REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 0.89 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 0.92 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) : 0.57300 REMARK 200 FOR SHELL : 3.000 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: SHELXD, SNB, CROQUE REMARK 200 STARTING MODEL: NONE REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 33.14 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.84 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: CALCIUM ACETATE, SPERMINE, MPD, VAPOR REMARK 280 DIFFUSION, HANGING DROP, TEMPERATURE 269K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 21 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,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 0.00000 REMARK 290 SMTRY2 2 0.000000 1.000000 0.000000 17.83200 REMARK 290 SMTRY3 2 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 A 1142 O HOH A 1143 1.62 REMARK 500 O HOH A 1128 O HOH A 1133 1.79 REMARK 500 O HOH A 1152 O HOH A 1154 1.99 REMARK 500 O HOH A 1152 O HOH B 1150 2.03 REMARK 500 O HOH A 1127 O HOH A 1133 2.04 REMARK 500 O HOH A 1138 O HOH B 1135 2.17 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' - C4' - C3' ANGL. DEV. = -2.5 DEGREES REMARK 500 DA B 16 C3' - C2' - C1' ANGL. DEV. = -5.8 DEGREES REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: PLANAR GROUPS REMARK 500 REMARK 500 PLANAR GROUPS IN THE FOLLOWING RESIDUES HAVE A TOTAL REMARK 500 RMS DISTANCE OF ALL ATOMS FROM THE BEST-FIT PLANE REMARK 500 BY MORE THAN AN EXPECTED VALUE OF 6*RMSD, WITH AN REMARK 500 RMSD 0.02 ANGSTROMS, OR AT LEAST ONE ATOM HAS REMARK 500 AN RMSD GREATER THAN THIS VALUE REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 M RES CSSEQI RMS TYPE REMARK 500 DT A 3 0.07 SIDE CHAIN REMARK 500 DT A 4 0.08 SIDE CHAIN REMARK 500 DT A 5 0.09 SIDE CHAIN REMARK 500 DA A 7 0.08 SIDE CHAIN REMARK 500 DC B 11 0.06 SIDE CHAIN REMARK 500 DT B 13 0.06 SIDE CHAIN REMARK 500 DT B 14 0.07 SIDE CHAIN REMARK 500 DT B 15 0.08 SIDE CHAIN 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 CA A 307 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 DT A 4 OP1 REMARK 620 2 HOH A1139 O 170.6 REMARK 620 3 HOH A1140 O 86.8 86.8 REMARK 620 4 HOH A1141 O 83.4 89.9 91.4 REMARK 620 5 HOH A1142 O 56.0 131.0 90.9 139.1 REMARK 620 6 HOH A1143 O 81.1 102.6 66.4 153.4 35.1 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA A 305 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 DA A 8 OP2 REMARK 620 2 HOH A1127 O 81.6 REMARK 620 3 HOH A1128 O 122.8 75.2 REMARK 620 4 HOH A1129 O 76.2 122.3 73.8 REMARK 620 5 HOH A1130 O 83.3 77.4 138.0 148.2 REMARK 620 6 HOH A1131 O 90.2 155.7 127.6 77.1 78.9 REMARK 620 7 HOH A1132 O 157.2 90.6 75.0 125.3 74.1 88.3 REMARK 620 8 HOH A1133 O 124.3 46.1 39.6 112.5 99.2 145.3 58.5 REMARK 620 N 1 2 3 4 5 6 7 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA A 306 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 DA A 8 N6 REMARK 620 2 HOH A1136 O 95.0 REMARK 620 3 HOH A1137 O 104.3 100.2 REMARK 620 4 HOH A1138 O 106.5 67.7 147.7 REMARK 620 5 HOH B1134 O 88.9 171.9 71.9 118.0 REMARK 620 6 HOH B1135 O 91.7 114.7 140.2 48.4 72.2 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA A 301 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HOH A1115 O REMARK 620 2 HOH A1117 O 97.3 REMARK 620 3 HOH B1112 O 168.6 81.3 REMARK 620 4 HOH B1113 O 94.3 140.4 93.8 REMARK 620 5 HOH B1114 O 88.9 147.8 86.5 69.8 REMARK 620 6 HOH B1116 O 86.3 75.1 82.4 143.6 73.9 REMARK 620 7 HOH B1118 O 78.7 70.8 111.2 74.7 141.2 140.3 REMARK 620 N 1 2 3 4 5 6 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA A 304 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HOH A1151 O REMARK 620 2 HOH A1152 O 77.8 REMARK 620 3 HOH A1154 O 117.3 44.4 REMARK 620 4 HOH A1155 O 71.3 140.3 136.9 REMARK 620 5 HOH A1157 O 74.2 75.5 70.2 72.7 REMARK 620 6 HOH B1150 O 84.6 45.8 72.3 148.3 120.7 REMARK 620 7 HOH B1153 O 157.7 121.5 78.3 86.5 98.6 116.6 REMARK 620 8 HOH B1156 O 89.6 119.2 133.9 85.2 155.8 74.2 89.7 REMARK 620 N 1 2 3 4 5 6 7 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA A 308 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HOH A1144 O REMARK 620 2 HOH A1145 O 74.4 REMARK 620 3 HOH A1146 O 78.3 101.7 REMARK 620 4 HOH A1147 O 152.7 104.2 75.3 REMARK 620 5 HOH A1148 O 98.7 169.3 84.6 85.8 REMARK 620 6 HOH A1149 O 76.1 87.9 149.1 131.2 82.4 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA B 302 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 DT B 12 OP1 REMARK 620 2 DA B 18 OP1 90.7 REMARK 620 3 DA B 18 OP1 90.4 11.2 REMARK 620 4 HOH B1119 O 79.7 139.2 128.3 REMARK 620 5 HOH B1120 O 87.7 146.5 157.7 73.2 REMARK 620 6 HOH B1121 O 92.1 59.9 71.1 158.5 86.7 REMARK 620 7 HOH B1122 O 107.7 85.1 74.6 61.1 127.1 140.2 REMARK 620 8 HOH B1123 O 163.8 94.9 98.0 105.3 79.2 77.7 88.0 REMARK 620 N 1 2 3 4 5 6 7 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA B 303 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 DT B 12 OP2 REMARK 620 2 DA B 18 O3' 87.4 REMARK 620 3 DA B 19 OP1 97.6 50.1 REMARK 620 4 HOH B1054 O 77.7 92.5 142.6 REMARK 620 5 HOH B1124 O 89.3 145.7 163.6 53.5 REMARK 620 6 HOH B1125 O 145.5 74.4 92.8 74.3 89.9 REMARK 620 7 HOH B1126 O 133.2 121.2 79.7 130.3 84.8 80.9 REMARK 620 N 1 2 3 4 5 6 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA B 303 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 DT B 12 OP2 REMARK 620 2 DA B 19 OP1 102.6 REMARK 620 3 HOH B1124 O 77.2 145.1 REMARK 620 4 HOH B1125 O 103.5 79.1 67.3 REMARK 620 5 HOH B1126 O 160.8 94.9 83.9 71.8 REMARK 620 N 1 2 3 4 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 301 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA B 302 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA B 303 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 305 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC5 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 306 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC6 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 307 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC7 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 308 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC8 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 304 DBREF 1SK5 A 1 10 PDB 1SK5 1SK5 1 10 DBREF 1SK5 B 11 20 PDB 1SK5 1SK5 11 20 SEQRES 1 A 10 DC DT DT DT DT DA DA DA DA DG SEQRES 1 B 10 DC DT DT DT DT DA DA DA DA DG HET CA A 301 1 HET CA A 305 1 HET CA A 306 1 HET CA A 307 1 HET CA A 308 1 HET CA A 304 1 HET CA B 302 1 HET CA B 303 2 HETNAM CA CALCIUM ION FORMUL 3 CA 8(CA 2+) FORMUL 11 HOH *156(H2 O) LINK OP1 DT A 4 CA CA A 307 1555 1555 2.24 LINK OP2 DA A 8 CA CA A 305 1555 1555 2.38 LINK N6 DA A 8 CA CA A 306 1555 1555 3.02 LINK CA CA A 301 O HOH A1115 1555 1555 2.38 LINK CA CA A 301 O HOH A1117 1555 1555 2.43 LINK CA CA A 301 O HOH B1112 1555 1555 2.34 LINK CA CA A 301 O HOH B1113 1555 1555 2.39 LINK CA CA A 301 O HOH B1114 1555 1555 2.45 LINK CA CA A 301 O HOH B1116 1555 1555 2.42 LINK CA CA A 301 O HOH B1118 1555 1555 2.42 LINK CA CA A 304 O HOH A1151 1555 1555 2.31 LINK CA CA A 304 O HOH A1152 1555 1555 2.77 LINK CA CA A 304 O HOH A1154 1555 1555 2.42 LINK CA CA A 304 O HOH A1155 1555 1555 2.48 LINK CA CA A 304 O HOH A1157 1555 1555 2.41 LINK CA CA A 304 O HOH B1150 1555 1555 2.37 LINK CA CA A 304 O HOH B1153 1555 1555 2.34 LINK CA CA A 304 O HOH B1156 1555 1555 2.47 LINK CA CA A 305 O HOH A1127 1555 1555 2.37 LINK CA CA A 305 O HOH A1128 1555 1555 2.40 LINK CA CA A 305 O HOH A1129 1555 1555 2.47 LINK CA CA A 305 O HOH A1130 1555 1555 2.49 LINK CA CA A 305 O HOH A1131 1555 1555 2.23 LINK CA CA A 305 O HOH A1132 1555 1555 2.42 LINK CA CA A 305 O HOH A1133 1555 1555 2.77 LINK CA CA A 306 O HOH A1136 1555 1555 2.25 LINK CA CA A 306 O HOH A1137 1555 1555 2.42 LINK CA CA A 306 O HOH A1138 1555 1555 2.59 LINK CA CA A 306 O HOH B1134 1555 1555 2.10 LINK CA CA A 306 O HOH B1135 1555 1555 2.70 LINK CA CA A 307 O HOH A1139 1555 1555 2.27 LINK CA CA A 307 O HOH A1140 1555 1555 2.30 LINK CA CA A 307 O HOH A1141 1555 1555 2.25 LINK CA CA A 307 O HOH A1142 1555 1555 2.80 LINK CA CA A 307 O HOH A1143 1555 1555 2.13 LINK CA CA A 308 O HOH A1144 1555 1555 2.30 LINK CA CA A 308 O HOH A1145 1555 1555 2.46 LINK CA CA A 308 O HOH A1146 1555 1555 2.56 LINK CA CA A 308 O HOH A1147 1555 1555 2.29 LINK CA CA A 308 O HOH A1148 1555 1555 2.35 LINK CA CA A 308 O HOH A1149 1555 1555 2.53 LINK OP1 DT B 12 CA CA B 302 1554 1555 2.32 LINK OP2 DT B 12 CA B CA B 303 1554 1555 2.15 LINK OP2 DT B 12 CA A CA B 303 1554 1555 2.24 LINK OP1B DA B 18 CA CA B 302 1555 1555 3.33 LINK OP1A DA B 18 CA CA B 302 1555 1555 2.35 LINK O3'B DA B 18 CA B CA B 303 1555 1555 3.15 LINK OP1 DA B 19 CA B CA B 303 1555 1555 2.51 LINK OP1 DA B 19 CA A CA B 303 1555 1555 2.26 LINK CA CA B 302 O HOH B1119 1555 1555 2.60 LINK CA CA B 302 O HOH B1120 1555 1555 2.42 LINK CA CA B 302 O HOH B1121 1555 1555 2.50 LINK CA CA B 302 O HOH B1122 1555 1555 2.27 LINK CA CA B 302 O HOH B1123 1555 1555 2.36 LINK CA B CA B 303 O HOH B1054 1555 1554 3.27 LINK CA A CA B 303 O HOH B1124 1555 1555 2.79 LINK CA B CA B 303 O HOH B1124 1555 1555 2.36 LINK CA B CA B 303 O HOH B1125 1555 1555 2.28 LINK CA A CA B 303 O HOH B1125 1555 1555 3.10 LINK CA A CA B 303 O HOH B1126 1555 1555 2.21 LINK CA B CA B 303 O HOH B1126 1555 1555 2.63 SITE 1 AC1 7 HOH A1115 HOH A1117 HOH B1112 HOH B1113 SITE 2 AC1 7 HOH B1114 HOH B1116 HOH B1118 SITE 1 AC2 7 DT B 12 DA B 18 HOH B1119 HOH B1120 SITE 2 AC2 7 HOH B1121 HOH B1122 HOH B1123 SITE 1 AC3 6 DT B 12 DA B 18 DA B 19 HOH B1124 SITE 2 AC3 6 HOH B1125 HOH B1126 SITE 1 AC4 8 DA A 8 HOH A1127 HOH A1128 HOH A1129 SITE 2 AC4 8 HOH A1130 HOH A1131 HOH A1132 HOH A1133 SITE 1 AC5 6 DA A 8 HOH A1136 HOH A1137 HOH A1138 SITE 2 AC5 6 HOH B1134 HOH B1135 SITE 1 AC6 6 DT A 4 HOH A1139 HOH A1140 HOH A1141 SITE 2 AC6 6 HOH A1142 HOH A1143 SITE 1 AC7 6 HOH A1144 HOH A1145 HOH A1146 HOH A1147 SITE 2 AC7 6 HOH A1148 HOH A1149 SITE 1 AC8 8 HOH A1151 HOH A1152 HOH A1154 HOH A1155 SITE 2 AC8 8 HOH A1157 HOH B1150 HOH B1153 HOH B1156 CRYST1 22.665 35.664 28.289 90.00 101.69 90.00 P 1 21 1 4 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 0.044121 0.000000 0.009129 0.00000 SCALE2 0.000000 0.028039 0.000000 0.00000 SCALE3 0.000000 0.000000 0.036098 0.00000