PDB Short entry for 1QA0 HEADER HYDROLASE 09-APR-99 1QA0 TITLE BOVINE TRYPSIN 2-AMINOBENZIMIDAZOLE COMPLEX COMPND MOL_ID: 1; COMPND 2 MOLECULE: TRYPSIN; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: BOVINE TRYPSIN; COMPND 5 EC: 3.4.21.4; COMPND 6 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: BOS TAURUS; SOURCE 3 ORGANISM_COMMON: CATTLE; SOURCE 4 ORGANISM_TAXID: 9913; SOURCE 5 ORGAN: BOVINE PANCREAS KEYWDS PROTEIN-INHIBITOR COMPLEX, S1 POCKET, SERINE PROTEASE, HYDROLASE EXPDTA X-RAY DIFFRACTION AUTHOR M.WHITLOW REVDAT 6 13-MAR-24 1QA0 1 COMPND SOURCE REMARK LINK REVDAT 5 24-JUL-19 1QA0 1 REMARK REVDAT 4 04-OCT-17 1QA0 1 REMARK REVDAT 3 24-FEB-09 1QA0 1 VERSN REVDAT 2 01-APR-03 1QA0 1 JRNL REVDAT 1 10-APR-00 1QA0 0 JRNL AUTH M.WHITLOW,D.O.ARNAIZ,B.O.BUCKMAN,D.D.DAVEY,B.GRIEDEL, JRNL AUTH 2 W.J.GUILFORD,S.K.KOOVAKKAT,A.LIANG,R.MOHAN,G.B.PHILLIPS, JRNL AUTH 3 M.SETO,K.J.SHAW,W.XU,Z.ZHAO,D.R.LIGHT,M.M.MORRISSEY JRNL TITL CRYSTALLOGRAPHIC ANALYSIS OF POTENT AND SELECTIVE FACTOR XA JRNL TITL 2 INHIBITORS COMPLEXED TO BOVINE TRYPSIN. JRNL REF ACTA CRYSTALLOGR.,SECT.D V. 55 1395 1999 JRNL REFN ISSN 0907-4449 JRNL PMID 10417407 JRNL DOI 10.1107/S0907444999007350 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH W.BODE,R.HUBER REMARK 1 TITL CRYSTAL STRUCTURE ANALYSIS AND REFINEMENT OF TWO VARIANTS OF REMARK 1 TITL 2 TRIGONAL TRYPSINOGEN REMARK 1 REF FEBS LETT. V. 90 265 1978 REMARK 1 REFN ISSN 0014-5793 REMARK 1 DOI 10.1016/0014-5793(78)80382-2 REMARK 1 REFERENCE 2 REMARK 1 AUTH E.A.STURA,I.A.WILSON REMARK 1 TITL ANALYTICAL AND PRODUCTION SEEDING TECHNIQUES REMARK 1 REF METHODS (SAN DIEGO) V. 1 38 1990 REMARK 1 REFN ISSN 1046-2023 REMARK 2 REMARK 2 RESOLUTION. 1.80 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PROFFT REMARK 3 AUTHORS : KONNERT,HENDRICKSON,FINZEL REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.80 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 10.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 COMPLETENESS FOR RANGE (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : 16656 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) : 0.172 REMARK 3 R VALUE (WORKING SET) : 0.172 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 : 1626 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 11 REMARK 3 SOLVENT ATOMS : 125 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) : 0.017 ; 0.020 REMARK 3 ANGLE DISTANCE (A) : 0.033 ; 0.030 REMARK 3 INTRAPLANAR 1-4 DISTANCE (A) : 0.046 ; 0.050 REMARK 3 H-BOND OR METAL COORDINATION (A) : NULL ; NULL REMARK 3 REMARK 3 PLANE RESTRAINT (A) : 0.016 ; 0.020 REMARK 3 CHIRAL-CENTER RESTRAINT (A**3) : 0.167 ; 0.150 REMARK 3 REMARK 3 NON-BONDED CONTACT RESTRAINTS. REMARK 3 SINGLE TORSION (A) : 0.167 ; 0.500 REMARK 3 MULTIPLE TORSION (A) : 0.185 ; 0.500 REMARK 3 H-BOND (X...Y) (A) : 0.203 ; 0.500 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) : 2.600 ; 3.000 REMARK 3 STAGGERED (DEGREES) : 17.500; 15.000 REMARK 3 TRANSVERSE (DEGREES) : 18.300; 20.000 REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : 2.008 ; 2.000 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 2.568 ; 3.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 3.605 ; 3.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 4.669 ; 4.000 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: USED RESTRAINED LEAST SQUARES REMARK 4 REMARK 4 1QA0 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 09-APR-99. REMARK 100 THE DEPOSITION ID IS D_1000009031. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 10-OCT-94 REMARK 200 TEMPERATURE (KELVIN) : 298.0 REMARK 200 PH : 7.4 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 RU300 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 : R-AXIS REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 16893 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.800 REMARK 200 RESOLUTION RANGE LOW (A) : 10.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 91.1 REMARK 200 DATA REDUNDANCY : 6.300 REMARK 200 R MERGE (I) : 0.09500 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 8.1000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.80 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.90 REMARK 200 COMPLETENESS FOR SHELL (%) : 78.5 REMARK 200 DATA REDUNDANCY IN SHELL : 4.00 REMARK 200 R MERGE FOR SHELL (I) : 0.02200 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: NULL REMARK 200 SOFTWARE USED: XTALVIEW REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 39.82 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.04 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: MICROCRYSTALS WERE INITIALLY GROWN REMARK 280 USING THE HANGING DROP METHOD IN LINBRO CULTURE PLATES. REMARK 280 CRYSTALLIZATION RESERVOIRS CONTAIN 1.8 - 2.0 M AMMONIUM SULFATE, REMARK 280 50 MM TRIS HCL, 10 MM CACL2, PH 7.4. SIX UL OF 15 MG/ML BOVINE REMARK 280 TRYPSIN IN 20 MM 2-AMINOBENZIMIDAZOLE WAS ADDED TO 6 UL OF REMARK 280 RESERVOIR. MACROSEEDING WAS USED TO GROW LARGE CRYSTALS (REF 2). REMARK 280 SINGLE CRYSTALS WERE WASHED IN 0.8 M AMMONIUM SULFATE, 50 MM REMARK 280 TRIS HCL, 10 MM CACL2, PH 7.4. THE WASHED CRYSTALS WERE PLACED REMARK 280 IN A 18 HOUR OLD HANGING., VAPOR DIFFUSION, HANGING DROP, REMARK 280 TEMPERATURE 298K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 31 2 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z+1/3 REMARK 290 3555 -X+Y,-X,Z+2/3 REMARK 290 4555 Y,X,-Z REMARK 290 5555 X-Y,-Y,-Z+2/3 REMARK 290 6555 -X,-X+Y,-Z+1/3 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 36.38000 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 72.76000 REMARK 290 SMTRY1 4 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 4 0.866025 0.500000 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 0.00000 REMARK 290 SMTRY2 5 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 72.76000 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 36.38000 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 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 LYS A 97 CD CE NZ 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 OE1 GLU A 65 O HOH A 365 2.11 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 TYR A 11 CB - CG - CD2 ANGL. DEV. = -3.7 DEGREES REMARK 500 TYR A 11 CB - CG - CD1 ANGL. DEV. = 4.8 DEGREES REMARK 500 VAL A 22 CA - CB - CG1 ANGL. DEV. = 9.6 DEGREES REMARK 500 ASP A 90 CB - CG - OD2 ANGL. DEV. = -5.9 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 VAL A 18 77.94 -119.99 REMARK 500 ASP A 59 -76.39 -124.41 REMARK 500 ASN A 103 -159.44 -155.74 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 CA A 301 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU A 58 OE1 REMARK 620 2 ASN A 60 O 88.4 REMARK 620 3 VAL A 63 O 159.8 82.6 REMARK 620 4 GLU A 68 OE2 103.6 165.8 88.3 REMARK 620 5 HOH A 333 O 78.6 98.9 85.0 91.0 REMARK 620 6 HOH A 365 O 94.6 90.3 103.4 81.3 168.3 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 CA A 301 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE 270 A 300 DBREF 1QA0 A 7 229 UNP P00760 TRY1_BOVIN 1 223 SEQRES 1 A 223 ILE VAL GLY GLY TYR THR CYS GLY ALA ASN THR VAL PRO SEQRES 2 A 223 TYR GLN VAL SER LEU ASN SER GLY TYR HIS PHE CYS GLY SEQRES 3 A 223 GLY SER LEU ILE ASN SER GLN TRP VAL VAL SER ALA ALA SEQRES 4 A 223 HIS CYS TYR LYS SER GLY ILE GLN VAL ARG LEU GLY GLU SEQRES 5 A 223 ASP ASN ILE ASN VAL VAL GLU GLY ASN GLU GLN PHE ILE SEQRES 6 A 223 SER ALA SER LYS SER ILE VAL HIS PRO SER TYR ASN SER SEQRES 7 A 223 ASN THR LEU ASN ASN ASP ILE MET LEU ILE LYS LEU LYS SEQRES 8 A 223 SER ALA ALA SER LEU ASN SER ARG VAL ALA SER ILE SER SEQRES 9 A 223 LEU PRO THR SER CYS ALA SER ALA GLY THR GLN CYS LEU SEQRES 10 A 223 ILE SER GLY TRP GLY ASN THR LYS SER SER GLY THR SER SEQRES 11 A 223 TYR PRO ASP VAL LEU LYS CYS LEU LYS ALA PRO ILE LEU SEQRES 12 A 223 SER ASP SER SER CYS LYS SER ALA TYR PRO GLY GLN ILE SEQRES 13 A 223 THR SER ASN MET PHE CYS ALA GLY TYR LEU GLU GLY GLY SEQRES 14 A 223 LYS ASP SER CYS GLN GLY ASP SER GLY GLY PRO VAL VAL SEQRES 15 A 223 CYS SER GLY LYS LEU GLN GLY ILE VAL SER TRP GLY SER SEQRES 16 A 223 GLY CYS ALA GLN LYS ASN LYS PRO GLY VAL TYR THR LYS SEQRES 17 A 223 VAL CYS ASN TYR VAL SER TRP ILE LYS GLN THR ILE ALA SEQRES 18 A 223 SER ASN HET CA A 301 1 HET 270 A 300 10 HETNAM CA CALCIUM ION HETNAM 270 2H-BENZOIMIDAZOL-2-YLAMINE HETSYN 270 ZK-800270 FORMUL 2 CA CA 2+ FORMUL 3 270 C7 H7 N3 FORMUL 4 HOH *125(H2 O) HELIX 1 1 ALA A 44 TYR A 48 5 5 HELIX 2 2 SER A 150 TYR A 158 1 9 HELIX 3 3 TYR A 218 SER A 228 1 11 SHEET 1 A 7 TYR A 11 THR A 12 0 SHEET 2 A 7 LYS A 142 PRO A 147 -1 N CYS A 143 O TYR A 11 SHEET 3 A 7 GLN A 121 GLY A 126 -1 N CYS A 122 O ALA A 146 SHEET 4 A 7 PRO A 186 CYS A 189 -1 O PRO A 186 N SER A 125 SHEET 5 A 7 LYS A 192 TRP A 199 -1 O LYS A 192 N CYS A 189 SHEET 6 A 7 GLY A 210 LYS A 214 -1 N VAL A 211 O TRP A 199 SHEET 7 A 7 MET A 166 ALA A 169 -1 O PHE A 167 N TYR A 212 SHEET 1 B 7 GLN A 21 ASN A 25 0 SHEET 2 B 7 HIS A 29 ASN A 37 -1 N PHE A 30 O LEU A 24 SHEET 3 B 7 GLN A 21 ASN A 25 -1 N VAL A 22 O GLY A 33 SHEET 4 B 7 GLN A 53 LEU A 56 -1 O GLN A 53 N ASN A 25 SHEET 5 B 7 GLN A 69 VAL A 78 -1 O GLN A 69 N LEU A 56 SHEET 6 B 7 MET A 92 LEU A 96 -1 O LEU A 93 N ILE A 77 SHEET 7 B 7 TRP A 40 SER A 43 -1 N VAL A 41 O ILE A 94 SSBOND 1 CYS A 13 CYS A 143 1555 1555 2.01 SSBOND 2 CYS A 31 CYS A 47 1555 1555 2.00 SSBOND 3 CYS A 115 CYS A 216 1555 1555 2.04 SSBOND 4 CYS A 122 CYS A 189 1555 1555 2.01 SSBOND 5 CYS A 154 CYS A 168 1555 1555 2.07 SSBOND 6 CYS A 179 CYS A 203 1555 1555 2.01 LINK OE1 GLU A 58 CA CA A 301 1555 1555 2.28 LINK O ASN A 60 CA CA A 301 1555 1555 2.32 LINK O VAL A 63 CA CA A 301 1555 1555 2.33 LINK OE2 GLU A 68 CA CA A 301 1555 1555 2.37 LINK CA CA A 301 O HOH A 333 1555 1555 2.60 LINK CA CA A 301 O HOH A 365 1555 1555 2.37 SITE 1 AC1 6 GLU A 58 ASN A 60 VAL A 63 GLU A 68 SITE 2 AC1 6 HOH A 333 HOH A 365 SITE 1 AC2 9 ASP A 177 SER A 178 CYS A 179 GLN A 180 SITE 2 AC2 9 SER A 183 GLY A 200 GLY A 202 GLY A 210 SITE 3 AC2 9 HOH A 385 CRYST1 55.020 55.020 109.140 90.00 90.00 120.00 P 31 2 1 6 ORIGX1 0.500000 0.866025 0.000000 0.00000 ORIGX2 -0.866025 0.500000 0.000000 0.00000 ORIGX3 0.000000 0.000000 1.000000 36.38000 SCALE1 0.018175 0.010493 0.000000 0.00000 SCALE2 0.000000 0.020987 0.000000 0.00000 SCALE3 0.000000 0.000000 0.009163 0.00000