HEADER HYDROLASE 01-NOV-93 1BTL TITLE CRYSTAL STRUCTURE OF ESCHERICHIA COLI TEM1 BETA-LACTAMASE AT 1.8 TITLE 2 ANGSTROMS RESOLUTION COMPND MOL_ID: 1; COMPND 2 MOLECULE: BETA-LACTAMASE TEM1; COMPND 3 CHAIN: A; COMPND 4 EC: 3.5.2.6; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI; SOURCE 3 ORGANISM_TAXID: 562; SOURCE 4 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 5 EXPRESSION_SYSTEM_PLASMID: PBR322 KEYWDS HYDROLASE EXPDTA X-RAY DIFFRACTION AUTHOR C.JELSCH,L.MOUREY,J.M.MASSON,J.P.SAMAMA REVDAT 5 30-OCT-24 1BTL 1 REMARK REVDAT 4 14-AUG-19 1BTL 1 REMARK REVDAT 3 17-JUL-19 1BTL 1 REMARK REVDAT 2 24-FEB-09 1BTL 1 VERSN REVDAT 1 26-JAN-95 1BTL 0 JRNL AUTH C.JELSCH,L.MOUREY,J.M.MASSON,J.P.SAMAMA JRNL TITL CRYSTAL STRUCTURE OF ESCHERICHIA COLI TEM1 BETA-LACTAMASE AT JRNL TITL 2 1.8 A RESOLUTION. JRNL REF PROTEINS V. 16 364 1993 JRNL REFN ISSN 0887-3585 JRNL PMID 8356032 JRNL DOI 10.1002/PROT.340160406 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH C.JELSCH,L.MOUREY,J.M.MASSON,J.P.SAMAMA REMARK 1 TITL CRYSTAL STRUCTURE OF ESCHERICHIA COLI TEM1 BETA-LACTAMASE AT REMARK 1 TITL 2 1.8 RESOLUTION REMARK 1 REF PROTEINS V. 16 364 1993 REMARK 1 REFN ISSN 0887-3585 REMARK 1 REFERENCE 2 REMARK 1 AUTH C.JELSCH,F.LENFANT,J.M.MASSON,J.P.SAMAMA REMARK 1 TITL CRYSTALLIZATION AND PRELIMINARY CRYSTALLOGRAPHIC DATA ON E. REMARK 1 TITL 2 COLI TEM1 BETA-LACTAMASE REMARK 1 REF J.MOL.BIOL. V. 223 377 1992 REMARK 1 REFN ISSN 0022-2836 REMARK 1 REFERENCE 3 REMARK 1 AUTH C.JELSCH,F.LENFANT,J.M.MASSON,J.P.SAMAMA REMARK 1 TITL BETA-LACTAMASE TEM1 OF E. COLI: CRYSTAL STRUCTURE REMARK 1 TITL 2 DETERMINATION AT 2.5 ANGSTROMS RESOLUTION REMARK 1 REF FEBS LETT. V. 299 135 1992 REMARK 1 REFN ISSN 0014-5793 REMARK 2 REMARK 2 RESOLUTION. 1.80 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PROLSQ REMARK 3 AUTHORS : KONNERT,HENDRICKSON REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.80 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 5.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 1.000 REMARK 3 COMPLETENESS FOR RANGE (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : 22510 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : NULL REMARK 3 R VALUE (WORKING + TEST SET) : 0.164 REMARK 3 R VALUE (WORKING SET) : 0.164 REMARK 3 FREE R VALUE : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : NULL REMARK 3 REMARK 3 FIT/AGREEMENT OF MODEL WITH ALL DATA. REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : NULL REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : NULL REMARK 3 FREE R VALUE (NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET COUNT (NO CUTOFF) : NULL REMARK 3 TOTAL NUMBER OF REFLECTIONS (NO CUTOFF) : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2030 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 5 REMARK 3 SOLVENT ATOMS : 199 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 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: REMARK 3 THE STRUCTURE WAS SOLVED BY MULTIPLE ISOMORPHOUS REMARK 3 REPLACEMENT, USING FOUR HEAVY ATOM DERIVATIVES, COMBINED REMARK 3 WITH MOLECULAR REPLACEMENT, USING THE C ALPHA COORDINATES REMARK 3 OF THE S. AUREUS PC1 BETA-LACTAMASE, REFINED AT 2.5 REMARK 3 RESOLUTION (HERZBERG AND MOULT, 1987, SCIENCE, REMARK 3 236:694-701). REMARK 4 REMARK 4 1BTL COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL. REMARK 100 THE DEPOSITION ID IS D_1000172073. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : NULL REMARK 200 TEMPERATURE (KELVIN) : NULL REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : NULL REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : NULL REMARK 200 RADIATION SOURCE : NULL REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : NULL REMARK 200 WAVELENGTH OR RANGE (A) : NULL REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : NULL REMARK 200 DETECTOR MANUFACTURER : NULL REMARK 200 INTENSITY-INTEGRATION SOFTWARE : NULL REMARK 200 DATA SCALING SOFTWARE : NULL REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : NULL REMARK 200 RESOLUTION RANGE HIGH (A) : NULL REMARK 200 RESOLUTION RANGE LOW (A) : NULL REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : NULL REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : NULL REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : NULL 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) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: X-PLOR REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 43.64 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.18 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NULL 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 21.55000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 45.60000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 32.20000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 45.60000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 21.55000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 32.20000 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: MONOMERIC 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 400 REMARK 400 COMPOUND REMARK 400 RESIDUE ASP 214 IS ASSUMED TO BE IN THE NEUTRAL FORM, REMARK 400 SINCE IT IS HYDROGEN BONDED TO RESIDUE ASP 233. REMARK 400 REMARK 400 RESIDUE LEU 220 IS PART OF ONE OF THE TWO HINGE REGIONS REMARK 400 THAT CONNECT THE TWO PROTEIN DOMAINS. THE HINGE REMARK 400 CONFORMATION IS STRONGLY CONSTRAINED BY THE SALT BRIDGE REMARK 400 BETWEEN ARG 222 AND ASP 233, WHICH CAN EXPLAIN THE HICH REMARK 400 CONFORMATIONAL ENERGY OF THE RESIDUE LEU 220 (SEE THE REMARK 400 REPRINT OF THE ARTICLE IN PROTEINS, P372, IN HINGE REMARK 400 REGIONS AND DOMAINS INTERFACE). REMARK 400 REMARK 400 RESIDUE MET 69 IS LOCATED NEAR THE CATALYTIC SERINE, AND REMARK 400 IS FOUND IN A STRAINED CONFORMATION IN ALL THE STRUCTURES REMARK 400 OF CLASS A BETA-LACTAMASES. REMARK 400 REMARK 400 THE STRUCTURE DISPLAYS A TOPOLOGY SIMILAR TO THAT OF THE REMARK 400 PC1 BETA-LACTAMASE OF S. AUREUS (HERZBERG, 1991, J. MOL. REMARK 400 BIOL., 217:701-719, PROTEIN DATA BANK ENTRY 1BLM) AND TO REMARK 400 THAT OF B. LICHENIFORMIS 749/C (KNOX ET AL., 1991, J. MOL. REMARK 400 BIOL., 220:435-355, PROTEIN DATA BANK ENTRY 4BLM). REMARK 450 REMARK 450 SOURCE REMARK 450 THE PROTEIN USED FOR THE STRUCTURE RESOLUTION IS THE REMARK 450 PRODUCT OF THE AMPICILLIN-RESISTANCE GENE CARRIED ON REMARK 450 PLASMID PBR322 IN ESCHERICHIA COLI. IT DIFFERS FROM TEM1 REMARK 450 BETA-LACTAMASE BY THE TWO MUTATIONS V84I AND A184V. REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS 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,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3) 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 RES CSSEQI ATM2 DEVIATION REMARK 500 HIS A 26 NE2 HIS A 26 CD2 -0.069 REMARK 500 HIS A 153 NE2 HIS A 153 CD2 -0.077 REMARK 500 HIS A 289 NE2 HIS A 289 CD2 -0.067 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 ARG A 65 NE - CZ - NH1 ANGL. DEV. = 4.7 DEGREES REMARK 500 ARG A 83 NE - CZ - NH1 ANGL. DEV. = 3.1 DEGREES REMARK 500 ARG A 164 NE - CZ - NH1 ANGL. DEV. = 3.4 DEGREES REMARK 500 TRP A 165 CD1 - CG - CD2 ANGL. DEV. = 5.0 DEGREES REMARK 500 TRP A 165 CE2 - CD2 - CG ANGL. DEV. = -5.3 DEGREES REMARK 500 ARG A 204 NE - CZ - NH2 ANGL. DEV. = -4.0 DEGREES REMARK 500 TRP A 210 CD1 - CG - CD2 ANGL. DEV. = 5.3 DEGREES REMARK 500 TRP A 210 CE2 - CD2 - CG ANGL. DEV. = -4.8 DEGREES REMARK 500 TRP A 229 CD1 - CG - CD2 ANGL. DEV. = 6.1 DEGREES REMARK 500 TRP A 229 CE2 - CD2 - CG ANGL. DEV. = -5.5 DEGREES REMARK 500 ARG A 244 NE - CZ - NH1 ANGL. DEV. = 4.2 DEGREES REMARK 500 ARG A 275 NE - CZ - NH1 ANGL. DEV. = 4.8 DEGREES REMARK 500 ARG A 275 NE - CZ - NH2 ANGL. DEV. = -3.1 DEGREES REMARK 500 LEU A 286 CA - CB - CG ANGL. DEV. = 14.8 DEGREES REMARK 500 TRP A 290 CD1 - CG - CD2 ANGL. DEV. = 5.9 DEGREES REMARK 500 TRP A 290 CE2 - CD2 - CG ANGL. DEV. = -5.8 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 MET A 69 -148.20 53.67 REMARK 500 TYR A 105 76.78 56.30 REMARK 500 LEU A 220 -117.09 -103.38 REMARK 500 SER A 258 -4.26 -142.19 REMARK 500 REMARK 500 REMARK: NULL REMARK 700 REMARK 700 SHEET REMARK 700 RESIDUES GLU 48, LEU 57, AND SER 59 FORM A BETA BULGE. REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: ACT REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: NULL REMARK 800 REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 291 REMARK 999 REMARK 999 SEQUENCE REMARK 999 THE NUMBERING SCHEME CORRESPONDS TO THAT OF AMBLER, WHERE REMARK 999 THE ACTIVE SERINE IS AT POSITION 70 (AMBLER, 1980, PHIL. REMARK 999 TRANS. R. SOC. LOND., B289:321-331). DBREF 1BTL A 26 290 UNP P62593 BLAT_ECOLI 24 286 SEQRES 1 A 263 HIS PRO GLU THR LEU VAL LYS VAL LYS ASP ALA GLU ASP SEQRES 2 A 263 GLN LEU GLY ALA ARG VAL GLY TYR ILE GLU LEU ASP LEU SEQRES 3 A 263 ASN SER GLY LYS ILE LEU GLU SER PHE ARG PRO GLU GLU SEQRES 4 A 263 ARG PHE PRO MET MET SER THR PHE LYS VAL LEU LEU CYS SEQRES 5 A 263 GLY ALA VAL LEU SER ARG ILE ASP ALA GLY GLN GLU GLN SEQRES 6 A 263 LEU GLY ARG ARG ILE HIS TYR SER GLN ASN ASP LEU VAL SEQRES 7 A 263 GLU TYR SER PRO VAL THR GLU LYS HIS LEU THR ASP GLY SEQRES 8 A 263 MET THR VAL ARG GLU LEU CYS SER ALA ALA ILE THR MET SEQRES 9 A 263 SER ASP ASN THR ALA ALA ASN LEU LEU LEU THR THR ILE SEQRES 10 A 263 GLY GLY PRO LYS GLU LEU THR ALA PHE LEU HIS ASN MET SEQRES 11 A 263 GLY ASP HIS VAL THR ARG LEU ASP ARG TRP GLU PRO GLU SEQRES 12 A 263 LEU ASN GLU ALA ILE PRO ASN ASP GLU ARG ASP THR THR SEQRES 13 A 263 MET PRO VAL ALA MET ALA THR THR LEU ARG LYS LEU LEU SEQRES 14 A 263 THR GLY GLU LEU LEU THR LEU ALA SER ARG GLN GLN LEU SEQRES 15 A 263 ILE ASP TRP MET GLU ALA ASP LYS VAL ALA GLY PRO LEU SEQRES 16 A 263 LEU ARG SER ALA LEU PRO ALA GLY TRP PHE ILE ALA ASP SEQRES 17 A 263 LYS SER GLY ALA GLY GLU ARG GLY SER ARG GLY ILE ILE SEQRES 18 A 263 ALA ALA LEU GLY PRO ASP GLY LYS PRO SER ARG ILE VAL SEQRES 19 A 263 VAL ILE TYR THR THR GLY SER GLN ALA THR MET ASP GLU SEQRES 20 A 263 ARG ASN ARG GLN ILE ALA GLU ILE GLY ALA SER LEU ILE SEQRES 21 A 263 LYS HIS TRP HET SO4 A 291 5 HETNAM SO4 SULFATE ION FORMUL 2 SO4 O4 S 2- FORMUL 3 HOH *199(H2 O) HELIX 1 H1 HIS A 26 LEU A 40 1 15 HELIX 2 H2A MET A 69 THR A 71 5BEARS THE CATALYTIC SERINE 3 HELIX 3 H2B PHE A 72 ASP A 85 1 14 HELIX 4 H3 THR A 109 LYS A 111 5 3 HELIX 5 H4 VAL A 119 THR A 128 1 10 HELIX 6 H5 ASN A 132 ILE A 142 1 11 HELIX 7 H6 PRO A 145 ASN A 154 1 10 HELIX 8 H7 GLU A 168 ASN A 170 5 3 HELIX 9 H8 PRO A 183 THR A 195 1 13 HELIX 10 H9 LEU A 201 GLU A 212 1 12 HELIX 11 H10 LEU A 221 ALA A 224 5 4 HELIX 12 H11 MET A 272 LYS A 288 1 17 SHEET 1 A 5 ILE A 56 PHE A 60 0 SHEET 2 A 5 ARG A 43 ASP A 50 -1 SHEET 3 A 5 ARG A 259 THR A 266 -1 SHEET 4 A 5 ARG A 244 GLY A 251 -1 SHEET 5 A 5 PHE A 230 ALA A 237 -1 SSBOND 1 CYS A 77 CYS A 123 1555 1555 2.01 CISPEP 1 GLU A 166 PRO A 167 0 0.92 SITE 1 ACT 11 SER A 70 LYS A 73 SER A 130 ASN A 132 SITE 2 ACT 11 GLU A 166 LYS A 234 SER A 235 GLY A 236 SITE 3 ACT 11 ALA A 237 GLY A 238 ARG A 244 SITE 1 AC1 7 SER A 70 SER A 130 SER A 235 GLY A 236 SITE 2 AC1 7 ARG A 244 HOH A 323 HOH A 437 CRYST1 43.100 64.400 91.200 90.00 90.00 90.00 P 21 21 21 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 0.023202 0.000000 0.000000 0.00000 SCALE2 0.000000 0.015528 0.000000 0.00000 SCALE3 0.000000 0.000000 0.010965 0.00000