PDB Short entry for 1SGT HEADER HYDROLASE (SERINE PROTEINASE) 13-APR-88 1SGT TITLE REFINED CRYSTAL STRUCTURE OF STREPTOMYCES GRISEUS TRYPSIN AT 1.7 TITLE 2 ANGSTROMS RESOLUTION COMPND MOL_ID: 1; COMPND 2 MOLECULE: TRYPSIN; COMPND 3 CHAIN: A; COMPND 4 EC: 3.4.21.4; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: STREPTOMYCES GRISEUS; SOURCE 3 ORGANISM_TAXID: 1911 KEYWDS HYDROLASE (SERINE PROTEINASE) EXPDTA X-RAY DIFFRACTION AUTHOR R.J.READ,M.N.G.JAMES REVDAT 4 29-NOV-17 1SGT 1 HELIX REVDAT 3 24-FEB-09 1SGT 1 VERSN REVDAT 2 01-APR-03 1SGT 1 JRNL REVDAT 1 16-JUL-88 1SGT 0 JRNL AUTH R.J.READ,M.N.JAMES JRNL TITL REFINED CRYSTAL STRUCTURE OF STREPTOMYCES GRISEUS TRYPSIN AT JRNL TITL 2 1.7 A RESOLUTION. JRNL REF J.MOL.BIOL. V. 200 523 1988 JRNL REFN ISSN 0022-2836 JRNL PMID 3135412 JRNL DOI 10.1016/0022-2836(88)90541-4 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH R.J.READ,G.D.BRAYER,L.JURASEK,M.N.G.JAMES REMARK 1 TITL CRITICAL COMPARISON OF COMPARATIVE MODEL BUILDING OF REMARK 1 TITL 2 STREPTOMYCES GRISEUS TRYPSIN REMARK 1 REF BIOCHEMISTRY V. 23 6570 1984 REMARK 1 REFN ISSN 0006-2960 REMARK 2 REMARK 2 RESOLUTION. 1.70 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) : 1.70 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 8.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL REMARK 3 COMPLETENESS FOR RANGE (%) : 80.6 REMARK 3 NUMBER OF REFLECTIONS : 20046 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) : 0.161 REMARK 3 R VALUE (WORKING SET) : NULL 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) : 0.2300 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 : 1620 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 1 REMARK 3 SOLVENT ATOMS : 192 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) : 0.019 ; 0.014 REMARK 3 ANGLE DISTANCE (A) : 0.038 ; 0.027 REMARK 3 INTRAPLANAR 1-4 DISTANCE (A) : 0.041 ; 0.027 REMARK 3 H-BOND OR METAL COORDINATION (A) : NULL ; NULL REMARK 3 REMARK 3 PLANE RESTRAINT (A) : 0.017 ; 0.016 REMARK 3 CHIRAL-CENTER RESTRAINT (A**3) : 0.208 ; 0.130 REMARK 3 REMARK 3 NON-BONDED CONTACT RESTRAINTS. REMARK 3 SINGLE TORSION (A) : 0.279 ; 0.350 REMARK 3 MULTIPLE TORSION (A) : 0.130 ; 0.350 REMARK 3 H-BOND (X...Y) (A) : NULL ; NULL REMARK 3 H-BOND (X-H...Y) (A) : 0.177 ; 0.350 REMARK 3 REMARK 3 CONFORMATIONAL TORSION ANGLE RESTRAINTS. REMARK 3 SPECIFIED (DEGREES) : NULL ; NULL REMARK 3 PLANAR (DEGREES) : 3.100 ; 2.500 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) : 1.816 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 2.535 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 5.729 ; 3.500 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 8.466 ; 5.000 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1SGT 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_1000176367. 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: NULL REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 48.67 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.40 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NULL REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 2 2 21 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 -X,Y,-Z+1/2 REMARK 290 4555 X,-Y,-Z REMARK 290 5555 X+1/2,Y+1/2,Z REMARK 290 6555 -X+1/2,-Y+1/2,Z+1/2 REMARK 290 7555 -X+1/2,Y+1/2,-Z+1/2 REMARK 290 8555 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 0.00000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 60.04500 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 60.04500 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 0.00000 REMARK 290 SMTRY1 5 1.000000 0.000000 0.000000 36.14500 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 25.49000 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 6 -1.000000 0.000000 0.000000 36.14500 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 25.49000 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 60.04500 REMARK 290 SMTRY1 7 -1.000000 0.000000 0.000000 36.14500 REMARK 290 SMTRY2 7 0.000000 1.000000 0.000000 25.49000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 60.04500 REMARK 290 SMTRY1 8 1.000000 0.000000 0.000000 36.14500 REMARK 290 SMTRY2 8 0.000000 -1.000000 0.000000 25.49000 REMARK 290 SMTRY3 8 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 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 264 LIES ON A SPECIAL POSITION. REMARK 450 REMARK 450 SOURCE REMARK 450 SGT IS PURIFIED FROM PRONASE, A COMMERCIAL PRODUCT OBTAINED REMARK 450 FROM THE EXTRACELLULAR CULTURE FILTRATE OF THE SOIL REMARK 450 BACTERIUM STREPTOMYCES GRISEUS, STRAIN K1. 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 NZ LYS A 122 OD2 ASP A 203 2.15 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 21 NE - CZ - NH1 ANGL. DEV. = 12.7 DEGREES REMARK 500 ARG A 21 NE - CZ - NH2 ANGL. DEV. = -9.5 DEGREES REMARK 500 ASP A 50 CB - CG - OD1 ANGL. DEV. = 10.3 DEGREES REMARK 500 ASP A 50 CB - CG - OD2 ANGL. DEV. = -5.8 DEGREES REMARK 500 ASP A 72 CB - CG - OD1 ANGL. DEV. = 6.4 DEGREES REMARK 500 ASP A 72 CB - CG - OD2 ANGL. DEV. = -5.9 DEGREES REMARK 500 ARG A 84 NE - CZ - NH1 ANGL. DEV. = 3.7 DEGREES REMARK 500 ARG A 84 NE - CZ - NH2 ANGL. DEV. = -3.5 DEGREES REMARK 500 ARG A 145 NE - CZ - NH1 ANGL. DEV. = 3.3 DEGREES REMARK 500 ARG A 145 NE - CZ - NH2 ANGL. DEV. = -5.1 DEGREES REMARK 500 ARG A 153 NE - CZ - NH1 ANGL. DEV. = 5.5 DEGREES REMARK 500 ARG A 153 NE - CZ - NH2 ANGL. DEV. = -3.3 DEGREES REMARK 500 ARG A 169 CD - NE - CZ ANGL. DEV. = 10.7 DEGREES REMARK 500 ARG A 169 NE - CZ - NH1 ANGL. DEV. = 13.8 DEGREES REMARK 500 ARG A 169 NE - CZ - NH2 ANGL. DEV. = -8.2 DEGREES REMARK 500 ARG A 201 NE - CZ - NH2 ANGL. DEV. = -5.3 DEGREES REMARK 500 ARG A 222 NE - CZ - NH1 ANGL. DEV. = 5.1 DEGREES REMARK 500 ARG A 222 NE - CZ - NH2 ANGL. DEV. = -4.8 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 ASN A 95 16.75 -140.94 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 246 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 165 OD1 REMARK 620 2 ALA A 177A O 100.7 REMARK 620 3 GLU A 180 O 84.3 81.6 REMARK 620 4 GLU A 230 OE2 151.5 95.8 75.3 REMARK 620 5 ASP A 165 OD2 53.3 82.1 130.0 153.3 REMARK 620 6 HOH A 259 O 76.5 172.9 104.5 89.4 91.1 REMARK 620 7 HOH A 261 O 129.0 88.6 146.6 74.1 79.3 88.2 REMARK 620 N 1 2 3 4 5 6 REMARK 700 REMARK 700 SHEET REMARK 700 SHEETS S1 AND S2 ARE BOTH SIX-STRANDED SHEETS FORMING A REMARK 700 BETA-BARREL. THIS IS REPRESENTED ON THE SHEET RECORDS REMARK 700 BELOW BY A SEVEN-STRANDED SHEET WITH THE FIRST AND LAST REMARK 700 STRANDS IDENTICAL. REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: CAT REMARK 800 EVIDENCE_CODE: AUTHOR REMARK 800 SITE_DESCRIPTION: RESIDUES FORMING THE CATALYTIC SITE REMARK 800 REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 246 DBREF 1SGT A 16 245 UNP P00775 TRYP_STRGR 37 259 SEQADV 1SGT GLY A 77 UNP P00775 SER 96 CONFLICT SEQADV 1SGT ALA A 79 UNP P00775 SER 97 CONFLICT SEQRES 1 A 223 VAL VAL GLY GLY THR ARG ALA ALA GLN GLY GLU PHE PRO SEQRES 2 A 223 PHE MET VAL ARG LEU SER MET GLY CYS GLY GLY ALA LEU SEQRES 3 A 223 TYR ALA GLN ASP ILE VAL LEU THR ALA ALA HIS CYS VAL SEQRES 4 A 223 SER GLY SER GLY ASN ASN THR SER ILE THR ALA THR GLY SEQRES 5 A 223 GLY VAL VAL ASP LEU GLN SER GLY ALA ALA VAL LYS VAL SEQRES 6 A 223 ARG SER THR LYS VAL LEU GLN ALA PRO GLY TYR ASN GLY SEQRES 7 A 223 THR GLY LYS ASP TRP ALA LEU ILE LYS LEU ALA GLN PRO SEQRES 8 A 223 ILE ASN GLN PRO THR LEU LYS ILE ALA THR THR THR ALA SEQRES 9 A 223 TYR ASN GLN GLY THR PHE THR VAL ALA GLY TRP GLY ALA SEQRES 10 A 223 ASN ARG GLU GLY GLY SER GLN GLN ARG TYR LEU LEU LYS SEQRES 11 A 223 ALA ASN VAL PRO PHE VAL SER ASP ALA ALA CYS ARG SER SEQRES 12 A 223 ALA TYR GLY ASN GLU LEU VAL ALA ASN GLU GLU ILE CYS SEQRES 13 A 223 ALA GLY TYR PRO ASP THR GLY GLY VAL ASP THR CYS GLN SEQRES 14 A 223 GLY ASP SER GLY GLY PRO MET PHE ARG LYS ASP ASN ALA SEQRES 15 A 223 ASP GLU TRP ILE GLN VAL GLY ILE VAL SER TRP GLY TYR SEQRES 16 A 223 GLY CYS ALA ARG PRO GLY TYR PRO GLY VAL TYR THR GLU SEQRES 17 A 223 VAL SER THR PHE ALA SER ALA ILE ALA SER ALA ALA ARG SEQRES 18 A 223 THR LEU HET CA A 246 1 HETNAM CA CALCIUM ION FORMUL 2 CA CA 2+ FORMUL 3 HOH *192(H2 O) HELIX 1 A ALA A 56 CYS A 58 5 3 HELIX 2 B1 ASP A 165 TYR A 172 1 8 HELIX 3 B2 GLY A 173 GLU A 175 5 3 HELIX 4 C1 VAL A 231 ARG A 243 1 13 HELIX 5 C2 ALA A 242 THR A 244 5 3 SHEET 1 S1 7 MET A 30 LEU A 33 0 SHEET 2 S1 7 CYS A 42 ALA A 48 -1 O GLY A 44 N VAL A 31 SHEET 3 S1 7 ILE A 51 THR A 54 -1 O LEU A 53 N ALA A 45 SHEET 4 S1 7 ALA A 104 LEU A 108 -1 O ILE A 106 N VAL A 52 SHEET 5 S1 7 VAL A 81 GLN A 90 -1 O LEU A 89 N LEU A 105 SHEET 6 S1 7 THR A 65 GLY A 68 -1 O GLY A 68 N VAL A 81 SHEET 7 S1 7 MET A 30 LEU A 33 -1 O ARG A 32 N THR A 67 SHEET 1 S2 7 THR A 135 GLY A 140 0 SHEET 2 S2 7 LEU A 156 VAL A 163 -1 O VAL A 160 N PHE A 136 SHEET 3 S2 7 GLU A 180 ALA A 183 -1 O CYS A 182 N VAL A 163 SHEET 4 S2 7 GLY A 226 GLU A 230 -1 O TYR A 228 N ILE A 181 SHEET 5 S2 7 TRP A 207 TRP A 215 -1 O TRP A 215 N VAL A 227 SHEET 6 S2 7 PRO A 198 LYS A 202 -1 O ARG A 201 N ILE A 208 SHEET 7 S2 7 THR A 135 GLY A 140 -1 O THR A 137 N PHE A 200 SSBOND 1 CYS A 42 CYS A 58 1555 1555 1.98 SSBOND 2 CYS A 168 CYS A 182 1555 1555 2.06 SSBOND 3 CYS A 191 CYS A 220 1555 1555 2.05 LINK CA CA A 246 OD1 ASP A 165 1555 1555 2.52 LINK CA CA A 246 O ALA A 177A 1555 1555 2.25 LINK CA CA A 246 O GLU A 180 1555 1555 2.26 LINK CA CA A 246 OE2 GLU A 230 1555 1555 2.43 LINK CA CA A 246 OD2 ASP A 165 1555 1555 2.43 LINK CA CA A 246 O HOH A 259 1555 1555 2.29 LINK CA CA A 246 O HOH A 261 1555 1555 2.41 SITE 1 CAT 3 HIS A 57 ASP A 102 SER A 195 SITE 1 AC1 6 ASP A 165 ALA A 177A GLU A 180 GLU A 230 SITE 2 AC1 6 HOH A 259 HOH A 261 CRYST1 72.290 50.980 120.090 90.00 90.00 90.00 C 2 2 21 8 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 0.013833 0.000000 0.000000 0.00000 SCALE2 0.000000 0.019616 0.000000 0.00000 SCALE3 0.000000 0.000000 0.008327 0.00000