HEADER LYASE 26-OCT-05 2ESF TITLE IDENTIFICATION OF A NOVEL NON-CATALYTIC BICARBONATE BINDING SITE IN TITLE 2 EUBACTERIAL BETA-CARBONIC ANHYDRASE COMPND MOL_ID: 1; COMPND 2 MOLECULE: CARBONIC ANHYDRASE 2; COMPND 3 CHAIN: A, B; COMPND 4 EC: 4.2.1.1; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI; SOURCE 3 ORGANISM_TAXID: 562; SOURCE 4 GENE: CAN, CYNT2; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 6 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: BL-21 (DE3); SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: PTRC99A KEYWDS CARBONIC ANHYDRASE, METALLOENZYME, BICARBONATE, ZINC COORDINATION, KEYWDS 2 LYASE EXPDTA X-RAY DIFFRACTION AUTHOR J.D.CRONK,R.S.ROWLETT,K.Y.J.ZHANG,C.TU,J.A.ENDRIZZI,P.C.GAREISS REVDAT 4 23-AUG-23 2ESF 1 REMARK LINK REVDAT 3 13-JUL-11 2ESF 1 VERSN REVDAT 2 24-FEB-09 2ESF 1 VERSN REVDAT 1 18-APR-06 2ESF 0 JRNL AUTH J.D.CRONK,R.S.ROWLETT,K.Y.J.ZHANG,C.TU,J.A.ENDRIZZI,J.LEE, JRNL AUTH 2 P.C.GAREISS,J.R.PREISS JRNL TITL IDENTIFICATION OF A NOVEL NONCATALYTIC BICARBONATE BINDING JRNL TITL 2 SITE IN EUBACTERIAL BETA-CARBONIC ANHYDRASE. JRNL REF BIOCHEMISTRY V. 45 4351 2006 JRNL REFN ISSN 0006-2960 JRNL PMID 16584170 JRNL DOI 10.1021/BI052272Q REMARK 2 REMARK 2 RESOLUTION. 2.25 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS REMARK 3 AUTHORS : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE- REMARK 3 : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU, REMARK 3 : READ,RICE,SIMONSON,WARREN REMARK 3 REMARK 3 REFINEMENT TARGET : ENGH & HUBER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.25 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 47.50 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 99.9 REMARK 3 NUMBER OF REFLECTIONS : 27603 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 SET) : 0.198 REMARK 3 FREE R VALUE : 0.228 REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : 1351 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : NULL REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : NULL REMARK 3 BIN RESOLUTION RANGE HIGH (A) : NULL REMARK 3 BIN RESOLUTION RANGE LOW (A) : NULL REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 REFLECTIONS IN BIN (WORKING SET) : NULL REMARK 3 BIN R VALUE (WORKING SET) : NULL REMARK 3 BIN FREE R VALUE : NULL REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 BIN FREE R VALUE TEST SET COUNT : NULL REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 3421 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 10 REMARK 3 SOLVENT ATOMS : 178 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) : 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 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : NULL REMARK 3 ESD FROM SIGMAA (A) : NULL REMARK 3 LOW RESOLUTION CUTOFF (A) : NULL REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : NULL REMARK 3 ESD FROM C-V SIGMAA (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : NULL REMARK 3 BOND ANGLES (DEGREES) : NULL REMARK 3 DIHEDRAL ANGLES (DEGREES) : NULL REMARK 3 IMPROPER ANGLES (DEGREES) : NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN BOND (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE (A**2) : NULL ; NULL REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : NULL REMARK 3 KSOL : NULL REMARK 3 BSOL : NULL REMARK 3 REMARK 3 NCS MODEL : NULL REMARK 3 REMARK 3 NCS RESTRAINTS. RMS SIGMA/WEIGHT REMARK 3 GROUP 1 POSITIONAL (A) : NULL ; NULL REMARK 3 GROUP 1 B-FACTOR (A**2) : NULL ; NULL REMARK 3 REMARK 3 PARAMETER FILE 1 : NULL REMARK 3 TOPOLOGY FILE 1 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 2ESF COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 15-NOV-05. REMARK 100 THE DEPOSITION ID IS D_1000035035. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 22-JUL-01 REMARK 200 TEMPERATURE (KELVIN) : 115 REMARK 200 PH : 6.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : ALS REMARK 200 BEAMLINE : 5.0.1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.0000 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 : MOSFLM REMARK 200 DATA SCALING SOFTWARE : SCALA, CCP4 (SCALA) REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 27655 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.250 REMARK 200 RESOLUTION RANGE LOW (A) : 54.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 2.000 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 FOR THE DATA SET : 16.1000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.25 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.39 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 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: CNS REMARK 200 STARTING MODEL: PDB ENTRY 1I6O REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 55.59 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.77 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 1.65 M AMMONIUM SULFATE, 4% PEG 400, REMARK 280 0.1 M MES, PH 6.5, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE REMARK 280 298K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 43 2 2 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 -Y,X,Z+3/4 REMARK 290 4555 Y,-X,Z+1/4 REMARK 290 5555 -X,Y,-Z REMARK 290 6555 X,-Y,-Z+1/2 REMARK 290 7555 Y,X,-Z+1/4 REMARK 290 8555 -Y,-X,-Z+3/4 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 81.10650 REMARK 290 SMTRY1 3 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 121.65975 REMARK 290 SMTRY1 4 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 4 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 40.55325 REMARK 290 SMTRY1 5 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 6 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 6 0.000000 0.000000 -1.000000 81.10650 REMARK 290 SMTRY1 7 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 7 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 40.55325 REMARK 290 SMTRY1 8 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY2 8 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 8 0.000000 0.000000 -1.000000 121.65975 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: TETRAMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TETRAMERIC REMARK 350 SOFTWARE USED: PISA,PQS REMARK 350 TOTAL BURIED SURFACE AREA: 16360 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 32970 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -82.0 KCAL/MOL 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 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 81.10650 REMARK 465 REMARK 465 MISSING RESIDUES REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.) REMARK 465 REMARK 465 M RES C SSSEQI REMARK 465 MET A 1 REMARK 465 LYS A 2 REMARK 465 HIS A 216 REMARK 465 ALA A 217 REMARK 465 ASN A 218 REMARK 465 HIS A 219 REMARK 465 LYS A 220 REMARK 465 MET B 1 REMARK 465 HIS B 216 REMARK 465 ALA B 217 REMARK 465 ASN B 218 REMARK 465 HIS B 219 REMARK 465 LYS B 220 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 1541 O HOH A 1541 6555 1.66 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: TORSION ANGLES REMARK 500 REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS: REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2) REMARK 500 REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI- REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400 REMARK 500 REMARK 500 M RES CSSEQI PSI PHI REMARK 500 GLU A 20 -73.56 -82.27 REMARK 500 ALA A 32 100.86 -40.48 REMARK 500 ASN A 68 64.19 37.18 REMARK 500 ASN A 110 62.31 3.05 REMARK 500 GLU A 112 85.68 -61.65 REMARK 500 ASP A 185 -7.52 -159.07 REMARK 500 GLU B 20 -70.67 -83.78 REMARK 500 ALA B 32 97.77 -53.52 REMARK 500 SER B 45 48.48 38.05 REMARK 500 ASN B 68 69.19 35.62 REMARK 500 ASN B 110 75.08 0.19 REMARK 500 GLN B 139 -73.06 36.10 REMARK 500 GLU B 140 5.10 -59.69 REMARK 500 ILE B 183 32.94 -85.90 REMARK 500 ASP B 185 -17.62 -144.13 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 ZN A 300 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 CYS A 42 SG REMARK 620 2 ASP A 44 OD2 102.1 REMARK 620 3 HIS A 98 NE2 113.3 100.9 REMARK 620 4 CYS A 101 SG 118.8 112.7 107.5 REMARK 620 N 1 2 3 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 ZN B 300 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 CYS B 42 SG REMARK 620 2 ASP B 44 OD2 99.7 REMARK 620 3 HIS B 98 NE2 113.3 110.7 REMARK 620 4 CYS B 101 SG 113.2 109.5 109.9 REMARK 620 N 1 2 3 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 300 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BCT A 1498 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN B 300 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BCT B 2498 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1I6O RELATED DB: PDB REMARK 900 E. COLI CARBONIC ANHYDRASE REMARK 900 RELATED ID: 1I6P RELATED DB: PDB REMARK 900 E. COLI CARBONIC ANHYDRASE DBREF 2ESF A 1 220 UNP P61517 CAN_ECOLI 1 220 DBREF 2ESF B 1 220 UNP P61517 CAN_ECOLI 1 220 SEQRES 1 A 220 MET LYS ASP ILE ASP THR LEU ILE SER ASN ASN ALA LEU SEQRES 2 A 220 TRP SER LYS MET LEU VAL GLU GLU ASP PRO GLY PHE PHE SEQRES 3 A 220 GLU LYS LEU ALA GLN ALA GLN LYS PRO ARG PHE LEU TRP SEQRES 4 A 220 ILE GLY CYS SER ASP SER ARG VAL PRO ALA GLU ARG LEU SEQRES 5 A 220 THR GLY LEU GLU PRO GLY GLU LEU PHE VAL HIS ARG ASN SEQRES 6 A 220 VAL ALA ASN LEU VAL ILE HIS THR ASP LEU ASN CYS LEU SEQRES 7 A 220 SER VAL VAL GLN TYR ALA VAL ASP VAL LEU GLU VAL GLU SEQRES 8 A 220 HIS ILE ILE ILE CYS GLY HIS TYR GLY CYS GLY GLY VAL SEQRES 9 A 220 GLN ALA ALA VAL GLU ASN PRO GLU LEU GLY LEU ILE ASN SEQRES 10 A 220 ASN TRP LEU LEU HIS ILE ARG ASP ILE TRP PHE LYS HIS SEQRES 11 A 220 SER SER LEU LEU GLY GLU MET PRO GLN GLU ARG ARG LEU SEQRES 12 A 220 ASP THR LEU CYS GLU LEU ASN VAL MET GLU GLN VAL TYR SEQRES 13 A 220 ASN LEU GLY HIS SER THR ILE MET GLN SER ALA TRP LYS SEQRES 14 A 220 ARG GLY GLN LYS VAL THR ILE HIS GLY TRP ALA TYR GLY SEQRES 15 A 220 ILE HIS ASP GLY LEU LEU ARG ASP LEU ASP VAL THR ALA SEQRES 16 A 220 THR ASN ARG GLU THR LEU GLU GLN ARG TYR ARG HIS GLY SEQRES 17 A 220 ILE SER ASN LEU LYS LEU LYS HIS ALA ASN HIS LYS SEQRES 1 B 220 MET LYS ASP ILE ASP THR LEU ILE SER ASN ASN ALA LEU SEQRES 2 B 220 TRP SER LYS MET LEU VAL GLU GLU ASP PRO GLY PHE PHE SEQRES 3 B 220 GLU LYS LEU ALA GLN ALA GLN LYS PRO ARG PHE LEU TRP SEQRES 4 B 220 ILE GLY CYS SER ASP SER ARG VAL PRO ALA GLU ARG LEU SEQRES 5 B 220 THR GLY LEU GLU PRO GLY GLU LEU PHE VAL HIS ARG ASN SEQRES 6 B 220 VAL ALA ASN LEU VAL ILE HIS THR ASP LEU ASN CYS LEU SEQRES 7 B 220 SER VAL VAL GLN TYR ALA VAL ASP VAL LEU GLU VAL GLU SEQRES 8 B 220 HIS ILE ILE ILE CYS GLY HIS TYR GLY CYS GLY GLY VAL SEQRES 9 B 220 GLN ALA ALA VAL GLU ASN PRO GLU LEU GLY LEU ILE ASN SEQRES 10 B 220 ASN TRP LEU LEU HIS ILE ARG ASP ILE TRP PHE LYS HIS SEQRES 11 B 220 SER SER LEU LEU GLY GLU MET PRO GLN GLU ARG ARG LEU SEQRES 12 B 220 ASP THR LEU CYS GLU LEU ASN VAL MET GLU GLN VAL TYR SEQRES 13 B 220 ASN LEU GLY HIS SER THR ILE MET GLN SER ALA TRP LYS SEQRES 14 B 220 ARG GLY GLN LYS VAL THR ILE HIS GLY TRP ALA TYR GLY SEQRES 15 B 220 ILE HIS ASP GLY LEU LEU ARG ASP LEU ASP VAL THR ALA SEQRES 16 B 220 THR ASN ARG GLU THR LEU GLU GLN ARG TYR ARG HIS GLY SEQRES 17 B 220 ILE SER ASN LEU LYS LEU LYS HIS ALA ASN HIS LYS HET ZN A 300 1 HET BCT A1498 4 HET ZN B 300 1 HET BCT B2498 4 HETNAM ZN ZINC ION HETNAM BCT BICARBONATE ION FORMUL 3 ZN 2(ZN 2+) FORMUL 4 BCT 2(C H O3 1-) FORMUL 7 HOH *178(H2 O) HELIX 1 1 ASP A 3 ASP A 22 1 20 HELIX 2 2 GLY A 24 GLN A 31 1 8 HELIX 3 3 PRO A 48 GLY A 54 1 7 HELIX 4 4 ASP A 74 VAL A 87 1 14 HELIX 5 5 CYS A 101 GLU A 109 1 9 HELIX 6 6 LEU A 115 HIS A 130 1 16 HELIX 7 7 HIS A 130 GLU A 136 1 7 HELIX 8 8 PRO A 138 GLU A 140 5 3 HELIX 9 9 ARG A 141 SER A 161 1 21 HELIX 10 10 SER A 161 ARG A 170 1 10 HELIX 11 11 ASN A 197 LYS A 215 1 19 HELIX 12 12 ASP B 3 GLU B 21 1 19 HELIX 13 13 PRO B 23 GLN B 31 1 9 HELIX 14 14 PRO B 48 GLY B 54 1 7 HELIX 15 15 ASP B 74 VAL B 87 1 14 HELIX 16 16 CYS B 101 GLU B 109 1 9 HELIX 17 17 LEU B 115 HIS B 130 1 16 HELIX 18 18 HIS B 130 GLU B 136 1 7 HELIX 19 19 ARG B 141 HIS B 160 1 20 HELIX 20 20 SER B 161 ARG B 170 1 10 HELIX 21 21 ASN B 197 LYS B 215 1 19 SHEET 1 A 5 LEU A 60 ASN A 65 0 SHEET 2 A 5 PHE A 37 CYS A 42 1 N PHE A 37 O PHE A 61 SHEET 3 A 5 HIS A 92 HIS A 98 1 O ILE A 94 N ILE A 40 SHEET 4 A 5 THR A 175 TYR A 181 1 O TRP A 179 N ILE A 95 SHEET 5 A 5 ARG A 189 ASP A 190 -1 O ARG A 189 N ALA A 180 SHEET 1 B 5 LEU B 60 ASN B 65 0 SHEET 2 B 5 PHE B 37 CYS B 42 1 N TRP B 39 O PHE B 61 SHEET 3 B 5 HIS B 92 HIS B 98 1 O ILE B 94 N ILE B 40 SHEET 4 B 5 THR B 175 TYR B 181 1 O HIS B 177 N ILE B 93 SHEET 5 B 5 ARG B 189 ASP B 190 -1 O ARG B 189 N ALA B 180 LINK SG CYS A 42 ZN ZN A 300 1555 1555 2.30 LINK OD2 ASP A 44 ZN ZN A 300 1555 1555 2.27 LINK NE2 HIS A 98 ZN ZN A 300 1555 1555 2.18 LINK SG CYS A 101 ZN ZN A 300 1555 1555 2.33 LINK SG CYS B 42 ZN ZN B 300 1555 1555 2.40 LINK OD2 ASP B 44 ZN ZN B 300 1555 1555 2.21 LINK NE2 HIS B 98 ZN ZN B 300 1555 1555 2.26 LINK SG CYS B 101 ZN ZN B 300 1555 1555 2.45 SITE 1 AC1 4 CYS A 42 ASP A 44 HIS A 98 CYS A 101 SITE 1 AC2 9 TRP A 39 VAL A 47 PRO A 48 ALA A 49 SITE 2 AC2 9 LEU A 52 ARG A 64 TYR A 181 HOH A1499 SITE 3 AC2 9 HOH A1500 SITE 1 AC3 4 CYS B 42 ASP B 44 HIS B 98 CYS B 101 SITE 1 AC4 8 TRP B 39 GLY B 41 VAL B 47 ALA B 49 SITE 2 AC4 8 ARG B 64 TYR B 181 HOH B2499 HOH B2500 CRYST1 82.866 82.866 162.213 90.00 90.00 90.00 P 43 2 2 16 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 0.012068 0.000000 0.000000 0.00000 SCALE2 0.000000 0.012068 0.000000 0.00000 SCALE3 0.000000 0.000000 0.006165 0.00000