1QRM - Header Asymmetric Unit

HEADER LYASE 15-JUN-99 1QRM

TITLE A CLOSER LOOK AT THE ACTIVE SITE OF GAMMA-CARBONIC ANHYDRASES: HIGH TITLE 2 RESOLUTION CRYSTAL STRUCTURES OF THE CARBONIC ANHYDRASE FROM TITLE 3 METHANOSARCINA THERMOPHILA

COMPND MOL_ID: 1; COMPND 2 MOLECULE: CARBONIC ANHYDRASE; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES

SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: METHANOSARCINA THERMOPHILA; SOURCE 3 ORGANISM_TAXID: 2210; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 5 EXPRESSION_SYSTEM_TAXID: 562

KEYWDS BETA-HELIX, LYASE

EXPDTA X-RAY DIFFRACTION

AUTHOR T.M.IVERSON,B.E.ALBER,C.KISKER,J.G.FERRY,D.C.REES

REVDAT 5 13-JUL-11 1QRM 1 VERSN REVDAT 4 24-FEB-09 1QRM 1 VERSN REVDAT 3 01-APR-03 1QRM 1 JRNL REVDAT 2 27-SEP-00 1QRM 1 JRNL REMARK SOURCE DBREF REVDAT 1 25-JUN-99 1QRM 0

JRNL AUTH T.M.IVERSON,B.E.ALBER,C.KISKER,J.G.FERRY,D.C.REES JRNL TITL A CLOSER LOOK AT THE ACTIVE SITE OF GAMMA-CLASS CARBONIC JRNL TITL 2 ANHYDRASES: HIGH-RESOLUTION CRYSTALLOGRAPHIC STUDIES OF THE JRNL TITL 3 CARBONIC ANHYDRASE FROM METHANOSARCINA THERMOPHILA. JRNL REF BIOCHEMISTRY V. 39 9222 2000 JRNL REFN ISSN 0006-2960 JRNL PMID 10924115 JRNL DOI 10.1021/BI000204S

REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH C.KISKER,H.SCHINDELIN,B.ALBER,J.FERRY,D.REES REMARK 1 TITL A LEFT-HANDED BETA-HELIX REVEALED BY THE CRYSTAL STRUCTURE REMARK 1 TITL 2 OF THE CARBONIC ANHYDRASE FROM METHANOSARCINA THERMOPHILA REMARK 1 REF EMBO J. V. 15 2323 1996 REMARK 1 REFN ISSN 0261-4189

REMARK 2 REMARK 2 RESOLUTION. 1.95 ANGSTROMS.

REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC REMARK 3 AUTHORS : MURSHUDOV,VAGIN,DODSON REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.95 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 20.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : 13667 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING + TEST SET) : 0.194 REMARK 3 R VALUE (WORKING SET) : 0.189 REMARK 3 FREE R VALUE : 0.236 REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : 760 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1555 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 6 REMARK 3 SOLVENT ATOMS : 40 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 31.00 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 OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): NULL REMARK 3 ESU BASED ON FREE R VALUE (A): NULL REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): NULL REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 DISTANCE RESTRAINTS. RMS SIGMA REMARK 3 BOND LENGTH (A) : NULL ; NULL REMARK 3 ANGLE DISTANCE (A) : NULL ; NULL REMARK 3 INTRAPLANAR 1-4 DISTANCE (A) : NULL ; NULL REMARK 3 H-BOND OR METAL COORDINATION (A) : NULL ; NULL REMARK 3 REMARK 3 PLANE RESTRAINT (A) : NULL ; NULL REMARK 3 CHIRAL-CENTER RESTRAINT (A**3) : NULL ; NULL REMARK 3 REMARK 3 NON-BONDED CONTACT RESTRAINTS. REMARK 3 SINGLE TORSION (A) : NULL ; NULL REMARK 3 MULTIPLE TORSION (A) : NULL ; NULL REMARK 3 H-BOND (X...Y) (A) : NULL ; NULL REMARK 3 H-BOND (X-H...Y) (A) : NULL ; NULL REMARK 3 REMARK 3 CONFORMATIONAL TORSION ANGLE RESTRAINTS. REMARK 3 SPECIFIED (DEGREES) : NULL ; NULL REMARK 3 PLANAR (DEGREES) : NULL ; NULL REMARK 3 STAGGERED (DEGREES) : NULL ; NULL REMARK 3 TRANSVERSE (DEGREES) : NULL ; 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 OTHER REFINEMENT REMARKS: NULL

REMARK 4 REMARK 4 1QRM COMPLIES WITH FORMAT V. 3.30, 13-JUL-11

REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 15-JUN-99. REMARK 100 THE RCSB ID CODE IS RCSB009185.

REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 31-JAN-98 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 5.8 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 RU200 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS II REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK, CCP4 (TRUNCATE) REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 13667 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.950 REMARK 200 RESOLUTION RANGE LOW (A) : 20.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 97.5 REMARK 200 DATA REDUNDANCY : 3.800 REMARK 200 R MERGE (I) : 0.08100 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 14.0000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.95 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.01 REMARK 200 COMPLETENESS FOR SHELL (%) : 95.0 REMARK 200 DATA REDUNDANCY IN SHELL : 3.00 REMARK 200 R MERGE FOR SHELL (I) : 0.28400 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: ISOMORPHOUS REPLACEMENT 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 (%): 40.19 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.06 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 8000, AMMONIUM SULFATE, PH 5.8, REMARK 280 VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 298K

REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 3 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 5555 Z,X,Y REMARK 290 6555 Z+1/2,-X+1/2,-Y REMARK 290 7555 -Z+1/2,-X,Y+1/2 REMARK 290 8555 -Z,X+1/2,-Y+1/2 REMARK 290 9555 Y,Z,X REMARK 290 10555 -Y,Z+1/2,-X+1/2 REMARK 290 11555 Y+1/2,-Z+1/2,-X REMARK 290 12555 -Y+1/2,-Z,X+1/2 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 41.34150 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 41.34150 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 41.34150 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 41.34150 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 41.34150 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 41.34150 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 5 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY2 5 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY1 6 0.000000 0.000000 1.000000 41.34150 REMARK 290 SMTRY2 6 -1.000000 0.000000 0.000000 41.34150 REMARK 290 SMTRY3 6 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY1 7 0.000000 0.000000 -1.000000 41.34150 REMARK 290 SMTRY2 7 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 1.000000 0.000000 41.34150 REMARK 290 SMTRY1 8 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY2 8 1.000000 0.000000 0.000000 41.34150 REMARK 290 SMTRY3 8 0.000000 -1.000000 0.000000 41.34150 REMARK 290 SMTRY1 9 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 9 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY3 9 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY1 10 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY2 10 0.000000 0.000000 1.000000 41.34150 REMARK 290 SMTRY3 10 -1.000000 0.000000 0.000000 41.34150 REMARK 290 SMTRY1 11 0.000000 1.000000 0.000000 41.34150 REMARK 290 SMTRY2 11 0.000000 0.000000 -1.000000 41.34150 REMARK 290 SMTRY3 11 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY1 12 0.000000 -1.000000 0.000000 41.34150 REMARK 290 SMTRY2 12 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY3 12 1.000000 0.000000 0.000000 41.34150 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: TRIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TRIMERIC REMARK 350 SOFTWARE USED: PISA,PQS REMARK 350 TOTAL BURIED SURFACE AREA: 9090 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 21000 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -213.0 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 0.000000 0.000000 -1.000000 82.68300 REMARK 350 BIOMT2 2 1.000000 0.000000 0.000000 41.34150 REMARK 350 BIOMT3 2 0.000000 -1.000000 0.000000 124.02450 REMARK 350 BIOMT1 3 0.000000 1.000000 0.000000 -41.34150 REMARK 350 BIOMT2 3 0.000000 0.000000 -1.000000 124.02450 REMARK 350 BIOMT3 3 -1.000000 0.000000 0.000000 82.68300

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 GLN A 1 REMARK 465 GLU A 2 REMARK 465 ILE A 3 REMARK 465 THR A 4

REMARK 470 REMARK 470 MISSING ATOM REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER; REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 470 I=INSERTION CODE): REMARK 470 M RES CSSEQI ATOMS REMARK 470 VAL A 5 CG1 CG2 REMARK 470 GLU A 13 CG CD OE1 OE2 REMARK 470 GLU A 22 CG CD OE1 OE2 REMARK 470 ASN A 87 CG OD1 REMARK 470 GLU A 89 CG CD OE1 OE2 REMARK 470 GLU A 91 CG CD OE1 OE2

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 ARG A 12 NE - CZ - NH1 ANGL. DEV. = 5.1 DEGREES REMARK 500 ARG A 12 NE - CZ - NH2 ANGL. DEV. = -3.9 DEGREES REMARK 500 MET A 64 CA - CB - CG ANGL. DEV. = 12.8 DEGREES REMARK 500 HIS A 117 CE1 - NE2 - CD2 ANGL. DEV. = 5.2 DEGREES REMARK 500 ARG A 153 NE - CZ - NH2 ANGL. DEV. = -5.0 DEGREES REMARK 500 GLU A 178 OE1 - CD - OE2 ANGL. DEV. = -8.0 DEGREES 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 ASP A 6 88.16 34.43 REMARK 500 SER A 60 74.29 -104.73 REMARK 500 GLU A 62 -92.71 -122.44 REMARK 500 GLU A 89 6.34 158.77 REMARK 500 ASP A 101 72.17 50.56 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 214 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 81 ND1 REMARK 620 2 HIS A 122 NE2 113.4 REMARK 620 3 SO4 A 215 O3 117.1 122.9 REMARK 620 4 SO4 A 215 O4 98.3 85.9 62.6 REMARK 620 5 HIS A 117 NE2 90.0 104.1 100.8 163.3 REMARK 620 6 SO4 A 215 S 115.3 102.2 31.5 31.8 131.6 REMARK 620 N 1 2 3 4 5

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 214 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 215

REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1THJ RELATED DB: PDB REMARK 900 CARBONIC ANHYDRASE REMARK 900 RELATED ID: 1QQ0 RELATED DB: PDB REMARK 900 COBALT SUBSTITUTED CARBONIC ANHYDRASE REMARK 900 RELATED ID: 1QRE RELATED DB: PDB REMARK 900 COBALT SUBSTITUTED CARBONIC ANHYDRASE + BICARBONATE REMARK 900 RELATED ID: 1QRF RELATED DB: PDB REMARK 900 COBALT SUBSTITUTED CARBONIC ANHYDRASE + SULFATE REMARK 900 RELATED ID: 1QRG RELATED DB: PDB REMARK 900 CARBONIC ANHYDRASE REMARK 900 RELATED ID: 1QRL RELATED DB: PDB REMARK 900 CARBONIC ANHYDRASE + BICARBONATE

DBREF 1QRM A 1 213 UNP P40881 CAH_METTE 35 347

SEQRES 1 A 213 GLN GLU ILE THR VAL ASP GLU PHE SER ASN ILE ARG GLU SEQRES 2 A 213 ASN PRO VAL THR PRO TRP ASN PRO GLU PRO SER ALA PRO SEQRES 3 A 213 VAL ILE ASP PRO THR ALA TYR ILE ASP PRO GLN ALA SER SEQRES 4 A 213 VAL ILE GLY GLU VAL THR ILE GLY ALA ASN VAL MET VAL SEQRES 5 A 213 SER PRO MET ALA SER ILE ARG SER ASP GLU GLY MET PRO SEQRES 6 A 213 ILE PHE VAL GLY ASP ARG SER ASN VAL GLN ASP GLY VAL SEQRES 7 A 213 VAL LEU HIS ALA LEU GLU THR ILE ASN GLU GLU GLY GLU SEQRES 8 A 213 PRO ILE GLU ASP ASN ILE VAL GLU VAL ASP GLY LYS GLU SEQRES 9 A 213 TYR ALA VAL TYR ILE GLY ASN ASN VAL SER LEU ALA HIS SEQRES 10 A 213 GLN SER GLN VAL HIS GLY PRO ALA ALA VAL GLY ASP ASP SEQRES 11 A 213 THR PHE ILE GLY MET GLN ALA PHE VAL PHE LYS SER LYS SEQRES 12 A 213 VAL GLY ASN ASN CYS VAL LEU GLU PRO ARG SER ALA ALA SEQRES 13 A 213 ILE GLY VAL THR ILE PRO ASP GLY ARG TYR ILE PRO ALA SEQRES 14 A 213 GLY MET VAL VAL THR SER GLN ALA GLU ALA ASP LYS LEU SEQRES 15 A 213 PRO GLU VAL THR ASP ASP TYR ALA TYR SER HIS THR ASN SEQRES 16 A 213 GLU ALA VAL VAL TYR VAL ASN VAL HIS LEU ALA GLU GLY SEQRES 17 A 213 TYR LYS GLU THR SER

HET ZN A 214 1 HET SO4 A 215 5

HETNAM ZN ZINC ION HETNAM SO4 SULFATE ION

FORMUL 2 ZN ZN 2+ FORMUL 3 SO4 O4 S 2- FORMUL 4 HOH *40(H2 O)

HELIX 1 1 ILE A 93 ILE A 97 5 5 HELIX 2 2 SER A 175 LYS A 181 1 7 HELIX 3 3 HIS A 193 GLU A 211 1 19

SHEET 1 A 8 ASN A 10 ARG A 12 0 SHEET 2 A 8 SER A 39 GLY A 42 1 N VAL A 40 O ASN A 10 SHEET 3 A 8 ALA A 56 SER A 60 1 O ALA A 56 N SER A 39 SHEET 4 A 8 VAL A 78 HIS A 81 1 O VAL A 78 N SER A 57 SHEET 5 A 8 SER A 119 GLY A 123 1 O SER A 119 N VAL A 79 SHEET 6 A 8 ALA A 137 LYS A 141 1 O ALA A 137 N GLN A 120 SHEET 7 A 8 SER A 154 GLY A 158 1 O SER A 154 N PHE A 138 SHEET 8 A 8 MET A 171 VAL A 173 1 O MET A 171 N ALA A 155 SHEET 1 B 7 VAL A 27 ASP A 29 0 SHEET 2 B 7 GLU A 43 GLY A 47 1 O VAL A 44 N VAL A 27 SHEET 3 B 7 PRO A 65 GLY A 69 1 N ILE A 66 O GLU A 43 SHEET 4 B 7 ALA A 106 GLY A 110 1 N VAL A 107 O PRO A 65 SHEET 5 B 7 PRO A 124 GLY A 128 1 N ALA A 125 O ALA A 106 SHEET 6 B 7 SER A 142 GLY A 145 1 N SER A 142 O PRO A 124 SHEET 7 B 7 VAL A 159 ILE A 161 1 O VAL A 159 N LYS A 143 SHEET 1 C 7 TYR A 33 ASP A 35 0 SHEET 2 C 7 VAL A 50 SER A 53 1 O VAL A 50 N TYR A 33 SHEET 3 C 7 SER A 72 GLN A 75 1 O SER A 72 N MET A 51 SHEET 4 C 7 VAL A 113 ALA A 116 1 O VAL A 113 N ASN A 73 SHEET 5 C 7 THR A 131 GLY A 134 1 O THR A 131 N SER A 114 SHEET 6 C 7 CYS A 148 GLU A 151 1 O CYS A 148 N PHE A 132 SHEET 7 C 7 ARG A 165 ILE A 167 1 O ARG A 165 N VAL A 149 SHEET 1 D 2 VAL A 98 VAL A 100 0 SHEET 2 D 2 LYS A 103 TYR A 105 -1 O LYS A 103 N VAL A 100

LINK ZN ZN A 214 ND1 HIS A 81 1555 1555 2.17 LINK ZN ZN A 214 NE2 HIS A 122 1555 1555 2.11 LINK ZN ZN A 214 O3 SO4 A 215 1555 1555 2.17 LINK ZN ZN A 214 O4 SO4 A 215 1555 1555 2.40 LINK ZN ZN A 214 NE2 HIS A 117 1555 8656 2.30 LINK ZN ZN A 214 S SO4 A 215 1555 1555 2.88

CISPEP 1 MET A 64 PRO A 65 0 2.29 CISPEP 2 GLY A 123 PRO A 124 0 4.57

SITE 1 AC1 4 HIS A 81 HIS A 117 HIS A 122 SO4 A 215 SITE 1 AC2 10 GLU A 62 GLN A 75 HIS A 81 ALA A 82 SITE 2 AC2 10 LEU A 83 HIS A 117 HIS A 122 VAL A 198 SITE 3 AC2 10 ZN A 214 HOH A 232

CRYST1 82.683 82.683 82.683 90.00 90.00 90.00 P 21 3 12

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 0.012094 0.000000 0.000000 0.00000

SCALE2 0.000000 0.012094 0.000000 0.00000

SCALE3 0.000000 0.000000 0.012094 0.00000