HEADER METAL BINDING PROTEIN 03-MAY-99 1QGO TITLE ANAEROBIC COBALT CHELATASE IN COBALAMIN BIOSYNTHESIS FROM SALMONELLA TITLE 2 TYPHIMURIUM COMPND MOL_ID: 1; COMPND 2 MOLECULE: ANAEROBIC COBALAMIN BIOSYNTHETIC COBALT CHELATASE; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: CBIK PROTEIN; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SALMONELLA TYPHIMURIUM; SOURCE 3 ORGANISM_TAXID: 99287; SOURCE 4 STRAIN: LT2; SOURCE 5 GENE: CBIK; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 8 EXPRESSION_SYSTEM_STRAIN: BL21 (DE3); SOURCE 9 EXPRESSION_SYSTEM_VARIANT: LYSS; SOURCE 10 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 11 EXPRESSION_SYSTEM_PLASMID: PAR8668; SOURCE 12 EXPRESSION_SYSTEM_GENE: CBIK; SOURCE 13 OTHER_DETAILS: HIS-TAGGED RECOMBINANT GENE KEYWDS COBALAMIN, VITAMIN B12, METAL ION CHELATION, CHELATASE, COBALT KEYWDS 2 PRECORRIN, CBIK, METAL BINDING PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR H.L.SCHUBERT,E.RAUX,M.J.WARREN,K.S.WILSON REVDAT 4 27-DEC-23 1QGO 1 REMARK REVDAT 3 13-JUL-11 1QGO 1 VERSN REVDAT 2 24-FEB-09 1QGO 1 VERSN REVDAT 1 29-SEP-99 1QGO 0 JRNL AUTH H.L.SCHUBERT,E.RAUX,K.S.WILSON,M.J.WARREN JRNL TITL COMMON CHELATASE DESIGN IN THE BRANCHED TETRAPYRROLE JRNL TITL 2 PATHWAYS OF HEME AND ANAEROBIC COBALAMIN SYNTHESIS. JRNL REF BIOCHEMISTRY V. 38 10660 1999 JRNL REFN ISSN 0006-2960 JRNL PMID 10451360 JRNL DOI 10.1021/BI9906773 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH E.RAUX,C.THERMES,P.HEATHCOTE,A.RAMBAUCH,M.J.WARREN REMARK 1 TITL A ROLE FOR SALMONELLA TYPHIMURIUM CBIK IN COBALAMIN (VITAMIN REMARK 1 TITL 2 B12) AND SIROHEME BIOSYNTHESIS REMARK 1 REF J.BACTERIOL. V. 179 121 1997 REMARK 1 REFN ISSN 0021-9193 REMARK 2 REMARK 2 RESOLUTION. 2.40 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.40 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 20.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 99.0 REMARK 3 NUMBER OF REFLECTIONS : 16597 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 + TEST SET) : NULL REMARK 3 R VALUE (WORKING SET) : 0.208 REMARK 3 FREE R VALUE : 0.271 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 839 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1999 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 15 REMARK 3 SOLVENT ATOMS : 226 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 36.21 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 27.30 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) : 0.009 ; 0.020 REMARK 3 ANGLE DISTANCE (A) : 0.031 ; 0.040 REMARK 3 INTRAPLANAR 1-4 DISTANCE (A) : 0.032 ; 0.050 REMARK 3 H-BOND OR METAL COORDINATION (A) : NULL ; NULL REMARK 3 REMARK 3 PLANE RESTRAINT (A) : 0.018 ; 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 1QGO COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 04-MAY-99. REMARK 100 THE DEPOSITION ID IS D_1000000987. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 01-MAR-98 REMARK 200 TEMPERATURE (KELVIN) : 120 REMARK 200 PH : 8.5 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 : MIRORS REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 16699 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.400 REMARK 200 RESOLUTION RANGE LOW (A) : 30.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.5 REMARK 200 DATA REDUNDANCY : 15.00 REMARK 200 R MERGE (I) : 0.08700 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 15.0000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.40 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.49 REMARK 200 COMPLETENESS FOR SHELL (%) : 99.8 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : 0.31000 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 4.000 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MIRAS REMARK 200 SOFTWARE USED: MLPHARE REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 63.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.35 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 10-15% PEG (MW 4000), 0.2 M LI2SO4, REMARK 280 0.1 M TRIS PH 8.5 REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 63 2 2 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z REMARK 290 3555 -X+Y,-X,Z REMARK 290 4555 -X,-Y,Z+1/2 REMARK 290 5555 Y,-X+Y,Z+1/2 REMARK 290 6555 X-Y,X,Z+1/2 REMARK 290 7555 Y,X,-Z REMARK 290 8555 X-Y,-Y,-Z REMARK 290 9555 -X,-X+Y,-Z REMARK 290 10555 -Y,-X,-Z+1/2 REMARK 290 11555 -X+Y,Y,-Z+1/2 REMARK 290 12555 X,X-Y,-Z+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 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 2 0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 3 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 3 -0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 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 42.38250 REMARK 290 SMTRY1 5 0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 5 -0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 42.38250 REMARK 290 SMTRY1 6 0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 6 0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 42.38250 REMARK 290 SMTRY1 7 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 7 0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 8 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 8 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 8 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 9 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 9 -0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 9 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 10 0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 10 -0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 10 0.000000 0.000000 -1.000000 42.38250 REMARK 290 SMTRY1 11 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 11 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 11 0.000000 0.000000 -1.000000 42.38250 REMARK 290 SMTRY1 12 0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 12 0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 12 0.000000 0.000000 -1.000000 42.38250 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 375 REMARK 375 SPECIAL POSITION REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL REMARK 375 POSITIONS. REMARK 375 REMARK 375 ATOM RES CSSEQI REMARK 375 HOH A 710 LIES ON A SPECIAL POSITION. 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 ALA A 259 REMARK 465 VAL A 260 REMARK 465 GLU A 261 REMARK 465 GLU A 262 REMARK 465 ALA A 263 REMARK 465 ALA A 264 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 ASP A 16 CB - CG - OD2 ANGL. DEV. = 6.0 DEGREES REMARK 500 ARG A 49 NE - CZ - NH2 ANGL. DEV. = 4.4 DEGREES REMARK 500 ARG A 54 NE - CZ - NH2 ANGL. DEV. = 3.3 DEGREES REMARK 500 ASP A 76 CB - CG - OD1 ANGL. DEV. = 7.0 DEGREES REMARK 500 GLU A 91 OE1 - CD - OE2 ANGL. DEV. = 7.5 DEGREES REMARK 500 ARG A 166 NE - CZ - NH1 ANGL. DEV. = 4.1 DEGREES REMARK 500 ARG A 166 NE - CZ - NH2 ANGL. DEV. = -4.2 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 LEU A 82 58.11 -92.18 REMARK 500 PRO A 168 49.27 -76.60 REMARK 500 SER A 176 -145.04 -155.80 REMARK 500 LEU A 200 55.88 -97.08 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: MAIN CHAIN PLANARITY REMARK 500 REMARK 500 THE FOLLOWING RESIDUES HAVE A PSEUDO PLANARITY REMARK 500 TORSION ANGLE, C(I) - CA(I) - N(I+1) - O(I), GREATER REMARK 500 10.0 DEGREES. (M=MODEL NUMBER; RES=RESIDUE NAME; REMARK 500 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 500 I=INSERTION CODE). REMARK 500 REMARK 500 M RES CSSEQI ANGLE REMARK 500 SER A 9 -12.23 REMARK 500 ASN A 225 -10.45 REMARK 500 REMARK 500 REMARK: NULL REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: CO REMARK 800 EVIDENCE_CODE: AUTHOR REMARK 800 SITE_DESCRIPTION: THE ACTIVE SITE IS LOCATED IN A CLEFT BETWEEN REMARK 800 THE TWO DOMAINS SURROUNDED BY FOUR REGIONS OF STRUCTURE REMARK 800 COMPRISED RESPECTIVELY BY RESIDUES 10-14, 86-89, 145- 149, 205- REMARK 800 207. HIS 145 AND HIS 207 ARE THE TWO RESIDUES SHOWN TO BE REMARK 800 RESPONSIBLE FOR METAL BINDING. REMARK 800 REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 400 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 401 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 402 DBREF 1QGO A 1 264 UNP Q05592 CBIK_SALTY 1 264 SEQRES 1 A 264 MET LYS LYS ALA LEU LEU VAL VAL SER PHE GLY THR SER SEQRES 2 A 264 TYR HIS ASP THR CYS GLU LYS ASN ILE VAL ALA CYS GLU SEQRES 3 A 264 ARG ASP LEU ALA ALA SER CYS PRO ASP ARG ASP LEU PHE SEQRES 4 A 264 ARG ALA PHE THR SER GLY MET ILE ILE ARG LYS LEU ARG SEQRES 5 A 264 GLN ARG ASP GLY ILE ASP ILE ASP THR PRO LEU GLN ALA SEQRES 6 A 264 LEU GLN LYS LEU ALA ALA GLN GLY TYR GLN ASP VAL ALA SEQRES 7 A 264 ILE GLN SER LEU HIS ILE ILE ASN GLY ASP GLU TYR GLU SEQRES 8 A 264 LYS ILE VAL ARG GLU VAL GLN LEU LEU ARG PRO LEU PHE SEQRES 9 A 264 THR ARG LEU THR LEU GLY VAL PRO LEU LEU SER SER HIS SEQRES 10 A 264 ASN ASP TYR VAL GLN LEU MET GLN ALA LEU ARG GLN GLN SEQRES 11 A 264 MET PRO SER LEU ARG GLN THR GLU LYS VAL VAL PHE MET SEQRES 12 A 264 GLY HIS GLY ALA SER HIS HIS ALA PHE ALA ALA TYR ALA SEQRES 13 A 264 CYS LEU ASP HIS MET MET THR ALA GLN ARG PHE PRO ALA SEQRES 14 A 264 ARG VAL GLY ALA VAL GLU SER TYR PRO GLU VAL ASP ILE SEQRES 15 A 264 LEU ILE ASP SER LEU ARG ASP GLU GLY VAL THR GLY VAL SEQRES 16 A 264 HIS LEU MET PRO LEU MET LEU VAL ALA GLY ASP HIS ALA SEQRES 17 A 264 ILE ASN ASP MET ALA SER ASP ASP GLY ASP SER TRP LYS SEQRES 18 A 264 MET ARG PHE ASN ALA ALA GLY ILE PRO ALA THR PRO TRP SEQRES 19 A 264 LEU SER GLY LEU GLY GLU ASN PRO ALA ILE ARG ALA MET SEQRES 20 A 264 PHE VAL ALA HIS LEU HIS GLN ALA LEU ASN MET ALA VAL SEQRES 21 A 264 GLU GLU ALA ALA HET SO4 A 400 5 HET SO4 A 401 5 HET SO4 A 402 5 HETNAM SO4 SULFATE ION FORMUL 2 SO4 3(O4 S 2-) FORMUL 5 HOH *226(H2 O) HELIX 1 1 HIS A 15 LYS A 20 1 6 HELIX 2 2 ILE A 22 SER A 32 1 11 HELIX 3 3 GLY A 45 ASP A 55 1 11 HELIX 4 4 PRO A 62 ALA A 71 1 10 HELIX 5 5 ASP A 88 LEU A 103 1 16 HELIX 6 6 HIS A 117 GLN A 130 1 14 HELIX 7 7 HIS A 149 GLN A 165 1 17 HELIX 8 8 VAL A 180 GLU A 190 1 11 HELIX 9 9 ASP A 206 ILE A 209 1 4 HELIX 10 10 TRP A 220 ALA A 226 1 7 HELIX 11 11 LEU A 238 GLU A 240 5 3 HELIX 12 12 PRO A 242 LEU A 256 1 15 SHEET 1 A 4 ASP A 37 PHE A 42 0 SHEET 2 A 4 LYS A 3 SER A 9 1 N LEU A 5 O ASP A 37 SHEET 3 A 4 ASP A 76 SER A 81 1 N ASP A 76 O ALA A 4 SHEET 4 A 4 ARG A 106 LEU A 109 1 N ARG A 106 O VAL A 77 SHEET 1 B 4 ALA A 169 ALA A 173 0 SHEET 2 B 4 GLU A 138 GLY A 144 1 N VAL A 140 O ARG A 170 SHEET 3 B 4 GLY A 194 PRO A 199 1 N GLY A 194 O LYS A 139 SHEET 4 B 4 PRO A 230 TRP A 234 1 N PRO A 230 O VAL A 195 CISPEP 1 TYR A 177 PRO A 178 0 -4.17 SITE 1 CO 2 HIS A 145 HIS A 207 SITE 1 AC1 10 GLY A 87 ASP A 88 GLU A 89 SER A 148 SITE 2 AC1 10 HIS A 150 HOH A 584 HOH A 640 HOH A 646 SITE 3 AC1 10 HOH A 675 HOH A 714 SITE 1 AC2 8 VAL A 174 GLU A 175 VAL A 180 TRP A 220 SITE 2 AC2 8 ARG A 223 HOH A 555 HOH A 695 HOH A 702 SITE 1 AC3 5 GLN A 64 LYS A 221 PRO A 233 HOH A 568 SITE 2 AC3 5 HOH A 667 CRYST1 128.097 128.097 84.765 90.00 90.00 120.00 P 63 2 2 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 0.007806 0.004507 0.000000 0.00000 SCALE2 0.000000 0.009014 0.000000 0.00000 SCALE3 0.000000 0.000000 0.011797 0.00000