HEADER METAL BINDING PROTEIN/INHIBITOR 22-APR-14 4PE7 TITLE CRYSTAL STRUCTURE OF CALCIUM-LOADED S100B BOUND TO SC1982 COMPND MOL_ID: 1; COMPND 2 MOLECULE: PROTEIN S100-B; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: S-100 PROTEIN BETA CHAIN,S-100 PROTEIN SUBUNIT BETA,S100 COMPND 5 CALCIUM-BINDING PROTEIN B; COMPND 6 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: BOS TAURUS; SOURCE 3 ORGANISM_COMMON: BOVINE; SOURCE 4 ORGANISM_TAXID: 9913; SOURCE 5 GENE: S100B; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS MALIGNANT MELANOMA, CALCIUM BINDING, COMPLEX, COVALENT INHIBITOR, KEYWDS 2 METAL BINDING PROTEIN-INHIBITOR COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR M.C.CAVALIER,A.D.PIERCE,P.T.WILDER,D.NEAU,E.A.TOTH,D.J.WEBER REVDAT 7 13-NOV-24 4PE7 1 REMARK REVDAT 6 27-DEC-23 4PE7 1 REMARK LINK REVDAT 5 04-DEC-19 4PE7 1 REMARK REVDAT 4 22-NOV-17 4PE7 1 REMARK REVDAT 3 13-SEP-17 4PE7 1 SOURCE JRNL REMARK REVDAT 2 05-NOV-14 4PE7 1 JRNL REVDAT 1 15-OCT-14 4PE7 0 JRNL AUTH M.C.CAVALIER,A.D.PIERCE,P.T.WILDER,M.J.ALASADY,K.G.HARTMAN, JRNL AUTH 2 D.B.NEAU,T.L.FOLEY,A.JADHAV,D.J.MALONEY,A.SIMEONOV,E.A.TOTH, JRNL AUTH 3 D.J.WEBER JRNL TITL COVALENT SMALL MOLECULE INHIBITORS OF CA(2+)-BOUND S100B. JRNL REF BIOCHEMISTRY V. 53 6628 2014 JRNL REFN ISSN 0006-2960 JRNL PMID 25268459 JRNL DOI 10.1021/BI5005552 REMARK 2 REMARK 2 RESOLUTION. 1.65 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX (PHENIX.REFINE: 1.8.1_1168) 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 : ML REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.65 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 32.33 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.350 REMARK 3 COMPLETENESS FOR RANGE (%) : 99.8 REMARK 3 NUMBER OF REFLECTIONS : 11731 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.177 REMARK 3 R VALUE (WORKING SET) : 0.173 REMARK 3 FREE R VALUE : 0.214 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.000 REMARK 3 FREE R VALUE TEST SET COUNT : 1173 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 32.3335 - 3.3039 1.00 1411 156 0.1706 0.2109 REMARK 3 2 3.3039 - 2.6228 0.99 1326 148 0.1694 0.2180 REMARK 3 3 2.6228 - 2.2913 1.00 1315 146 0.1660 0.1969 REMARK 3 4 2.2913 - 2.0819 1.00 1321 146 0.1561 0.1915 REMARK 3 5 2.0819 - 1.9327 1.00 1298 145 0.1666 0.2196 REMARK 3 6 1.9327 - 1.8187 1.00 1318 147 0.1824 0.2468 REMARK 3 7 1.8187 - 1.7277 1.00 1279 141 0.2045 0.2092 REMARK 3 8 1.7277 - 1.6525 1.00 1290 144 0.2338 0.3001 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : FLAT BULK SOLVENT MODEL REMARK 3 SOLVENT RADIUS : 1.11 REMARK 3 SHRINKAGE RADIUS : 0.90 REMARK 3 K_SOL : NULL REMARK 3 B_SOL : NULL REMARK 3 REMARK 3 ERROR ESTIMATES. REMARK 3 COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED) : 0.150 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 20.940 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 20.67 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : NULL REMARK 3 B22 (A**2) : NULL REMARK 3 B33 (A**2) : NULL REMARK 3 B12 (A**2) : NULL REMARK 3 B13 (A**2) : NULL REMARK 3 B23 (A**2) : NULL 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 : 0.013 809 REMARK 3 ANGLE : 1.242 1108 REMARK 3 CHIRALITY : 0.087 122 REMARK 3 PLANARITY : 0.003 135 REMARK 3 DIHEDRAL : 16.412 310 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 4PE7 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 25-APR-14. REMARK 100 THE DEPOSITION ID IS D_1000201232. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 25-APR-13 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 8.0 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SSRL REMARK 200 BEAMLINE : BL7-1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.1271 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 315 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XSCALE REMARK 200 DATA SCALING SOFTWARE : SCALA 3.3.20, XDS, XSCALE REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 11752 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.652 REMARK 200 RESOLUTION RANGE LOW (A) : 32.327 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.9 REMARK 200 DATA REDUNDANCY : 4.700 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : 0.04500 REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 22.7000 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) : 1.74 REMARK 200 COMPLETENESS FOR SHELL (%) : 99.8 REMARK 200 DATA REDUNDANCY IN SHELL : 4.70 REMARK 200 R MERGE FOR SHELL (I) : 0.61300 REMARK 200 R SYM FOR SHELL (I) : 0.61300 REMARK 200 <I/SIGMA(I)> FOR SHELL : 1.300 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: NULL REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 44.55 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.22 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 40% 2-METHYL-2,4-PENTANEDIOL, 0.1M REMARK 280 TRIS,7.5MM CACL2, 4MM SC1982, PH 8.0, VAPOR DIFFUSION, SITTING REMARK 280 DROP, TEMPERATURE 295K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 2 2 21 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,-Y,Z+1/2 REMARK 290 3555 -X,Y,-Z+1/2 REMARK 290 4555 X,-Y,-Z REMARK 290 5555 X+1/2,Y+1/2,Z REMARK 290 6555 -X+1/2,-Y+1/2,Z+1/2 REMARK 290 7555 -X+1/2,Y+1/2,-Z+1/2 REMARK 290 8555 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 0.00000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 30.39800 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 30.39800 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 4 0.000000 -1.000000 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 17.31900 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 45.00900 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 6 -1.000000 0.000000 0.000000 17.31900 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 45.00900 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 30.39800 REMARK 290 SMTRY1 7 -1.000000 0.000000 0.000000 17.31900 REMARK 290 SMTRY2 7 0.000000 1.000000 0.000000 45.00900 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 30.39800 REMARK 290 SMTRY1 8 1.000000 0.000000 0.000000 17.31900 REMARK 290 SMTRY2 8 0.000000 -1.000000 0.000000 45.00900 REMARK 290 SMTRY3 8 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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 3620 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 9960 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -97.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: A 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 1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 350 BIOMT3 2 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 216 O HOH A 283 1.84 REMARK 500 O HOH A 269 O HOH A 282 1.88 REMARK 500 O HOH A 336 O HOH A 337 1.99 REMARK 500 O HOH A 216 O HOH A 246 2.06 REMARK 500 O HOH A 290 O HOH A 293 2.09 REMARK 500 O HOH A 221 O HOH A 253 2.19 REMARK 500 REMARK 500 REMARK: NULL 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 O HOH A 204 O HOH A 237 8545 2.10 REMARK 500 REMARK 500 REMARK: NULL REMARK 525 REMARK 525 SOLVENT REMARK 525 REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER; REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE REMARK 525 NUMBER; I=INSERTION CODE): REMARK 525 REMARK 525 M RES CSSEQI REMARK 525 HOH A 324 DISTANCE = 5.81 ANGSTROMS REMARK 525 HOH A 327 DISTANCE = 6.02 ANGSTROMS REMARK 525 HOH A 335 DISTANCE = 5.81 ANGSTROMS 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 102 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 SER A 18 O REMARK 620 2 GLU A 21 O 103.5 REMARK 620 3 ASP A 23 O 81.5 85.5 REMARK 620 4 LYS A 26 O 90.0 159.7 81.5 REMARK 620 5 GLU A 31 OE1 101.0 114.6 158.0 76.7 REMARK 620 6 GLU A 31 OE2 78.0 76.4 148.5 121.9 51.4 REMARK 620 7 HOH A 299 O 168.0 80.7 87.7 83.2 87.1 114.0 REMARK 620 N 1 2 3 4 5 6 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA A 103 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 61 OD1 REMARK 620 2 ASP A 63 OD1 83.3 REMARK 620 3 ASP A 65 OD1 85.3 79.3 REMARK 620 4 GLU A 67 O 85.1 157.9 81.1 REMARK 620 5 GLU A 72 OE1 114.4 123.7 149.8 78.2 REMARK 620 6 GLU A 72 OE2 88.3 77.1 156.1 121.3 52.4 REMARK 620 7 HOH A 296 O 159.7 84.9 76.2 100.2 85.9 105.1 REMARK 620 N 1 2 3 4 5 6 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA A 104 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 63 OD2 REMARK 620 2 ASP A 69 OD2 88.0 REMARK 620 3 HOH A 208 O 75.8 123.5 REMARK 620 4 HOH A 214 O 91.5 177.1 59.1 REMARK 620 5 HOH A 216 O 111.1 70.3 165.5 107.3 REMARK 620 6 HOH A 246 O 71.3 94.7 128.0 82.4 48.1 REMARK 620 7 HOH A 278 O 148.5 83.4 83.9 98.6 94.3 139.4 REMARK 620 8 HOH A 283 O 142.5 101.5 124.1 77.2 43.0 71.8 69.0 REMARK 620 N 1 2 3 4 5 6 7 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue ODN A 101 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue CA A 102 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue CA A 103 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue CA A 104 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 4PDZ RELATED DB: PDB REMARK 900 RELATED ID: 4PE0 RELATED DB: PDB REMARK 900 RELATED ID: 4PE1 RELATED DB: PDB REMARK 900 RELATED ID: 4PE4 RELATED DB: PDB DBREF 4PE7 A 0 91 UNP P02638 S100B_BOVIN 1 92 SEQRES 1 A 92 MET SER GLU LEU GLU LYS ALA VAL VAL ALA LEU ILE ASP SEQRES 2 A 92 VAL PHE HIS GLN TYR SER GLY ARG GLU GLY ASP LYS HIS SEQRES 3 A 92 LYS LEU LYS LYS SER GLU LEU LYS GLU LEU ILE ASN ASN SEQRES 4 A 92 GLU LEU SER HIS PHE LEU GLU GLU ILE LYS GLU GLN GLU SEQRES 5 A 92 VAL VAL ASP LYS VAL MET GLU THR LEU ASP SER ASP GLY SEQRES 6 A 92 ASP GLY GLU CYS ASP PHE GLN GLU PHE MET ALA PHE VAL SEQRES 7 A 92 ALA MET ILE THR THR ALA CYS HIS GLU PHE PHE GLU HIS SEQRES 8 A 92 GLU HET ODN A 101 26 HET CA A 102 1 HET CA A 103 1 HET CA A 104 1 HETNAM ODN (1BETA,6BETA,7BETA,8ALPHA,9BETA,10ALPHA,13ALPHA,14R, HETNAM 2 ODN 16BETA)-1,6,7,14-TETRAHYDROXY-7,20-EPOXYKAURAN-15-ONE HETNAM CA CALCIUM ION FORMUL 2 ODN C20 H30 O6 FORMUL 3 CA 3(CA 2+) FORMUL 6 HOH *137(H2 O) HELIX 1 AA1 SER A 1 GLY A 19 1 19 HELIX 2 AA2 LYS A 28 LEU A 40 1 13 HELIX 3 AA3 GLU A 49 ASP A 61 1 13 HELIX 4 AA4 ASP A 69 HIS A 90 1 22 LINK SG CYS A 84 C14 ODN A 101 1555 1555 1.84 LINK O SER A 18 CA CA A 102 1555 1555 2.33 LINK O GLU A 21 CA CA A 102 1555 1555 2.38 LINK O ASP A 23 CA CA A 102 1555 1555 2.35 LINK O LYS A 26 CA CA A 102 1555 1555 2.42 LINK OE1 GLU A 31 CA CA A 102 1555 1555 2.43 LINK OE2 GLU A 31 CA CA A 102 1555 1555 2.58 LINK OD1 ASP A 61 CA CA A 103 1555 1555 2.30 LINK OD1 ASP A 63 CA CA A 103 1555 1555 2.37 LINK OD2 ASP A 63 CA CA A 104 1555 1555 2.38 LINK OD1 ASP A 65 CA CA A 103 1555 1555 2.35 LINK O GLU A 67 CA CA A 103 1555 1555 2.33 LINK OD2 ASP A 69 CA CA A 104 1555 1555 2.33 LINK OE1 GLU A 72 CA CA A 103 1555 1555 2.42 LINK OE2 GLU A 72 CA CA A 103 1555 1555 2.54 LINK CA CA A 102 O HOH A 299 1555 1555 2.33 LINK CA CA A 103 O HOH A 296 1555 1555 2.41 LINK CA CA A 104 O HOH A 208 1555 2454 2.21 LINK CA CA A 104 O HOH A 214 1555 2454 2.39 LINK CA CA A 104 O HOH A 216 1555 1555 2.37 LINK CA CA A 104 O HOH A 246 1555 1555 2.65 LINK CA CA A 104 O HOH A 278 1555 1555 2.74 LINK CA CA A 104 O HOH A 283 1555 1555 2.62 SITE 1 AC1 4 MET A 0 HIS A 42 PHE A 43 CYS A 84 SITE 1 AC2 6 SER A 18 GLU A 21 ASP A 23 LYS A 26 SITE 2 AC2 6 GLU A 31 HOH A 299 SITE 1 AC3 6 ASP A 61 ASP A 63 ASP A 65 GLU A 67 SITE 2 AC3 6 GLU A 72 HOH A 296 SITE 1 AC4 8 ASP A 63 ASP A 69 HOH A 208 HOH A 214 SITE 2 AC4 8 HOH A 216 HOH A 246 HOH A 278 HOH A 283 CRYST1 34.638 90.018 60.796 90.00 90.00 90.00 C 2 2 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 0.028870 0.000000 0.000000 0.00000 SCALE2 0.000000 0.011109 0.000000 0.00000 SCALE3 0.000000 0.000000 0.016448 0.00000