PDB Short entry for 1SMF HEADER HYDROLASE/HYDROLASE INHIBITOR 24-OCT-92 1SMF TITLE STUDIES ON AN ARTIFICIAL TRYPSIN INHIBITOR PEPTIDE DERIVED FROM THE TITLE 2 MUNG BEAN INHIBITOR COMPND MOL_ID: 1; COMPND 2 MOLECULE: TRYPSIN; COMPND 3 CHAIN: E; COMPND 4 EC: 3.4.21.4; COMPND 5 ENGINEERED: YES; COMPND 6 MOL_ID: 2; COMPND 7 MOLECULE: BOWMAN-BIRK TYPE TRYPSIN INHIBITOR; COMPND 8 CHAIN: I; COMPND 9 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: BOS TAURUS; SOURCE 3 ORGANISM_COMMON: BOVINE; SOURCE 4 ORGANISM_TAXID: 9913; SOURCE 5 TISSUE: PANCREAS; SOURCE 6 MOL_ID: 2 KEYWDS PROTEINASE, HYDROLASE-HYDROLASE INHIBITOR COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR Q.HUANG,Y.LI,S.ZHANG,S.LIU,Y.TANG,C.QI REVDAT 7 28-JUN-17 1SMF 1 DBREF REVDAT 6 13-JUL-11 1SMF 1 VERSN REVDAT 5 25-AUG-09 1SMF 1 SOURCE REVDAT 4 24-FEB-09 1SMF 1 VERSN REVDAT 3 01-APR-03 1SMF 1 JRNL REVDAT 2 15-JAN-95 1SMF 1 JRNL REVDAT 1 31-JUL-94 1SMF 0 JRNL AUTH Y.LI,Q.HUANG,S.ZHANG,S.LIU,C.CHI,Y.TANG JRNL TITL STUDIES ON AN ARTIFICIAL TRYPSIN INHIBITOR PEPTIDE DERIVED JRNL TITL 2 FROM THE MUNG BEAN TRYPSIN INHIBITOR: CHEMICAL SYNTHESIS, JRNL TITL 3 REFOLDING, AND CRYSTALLOGRAPHIC ANALYSIS OF ITS COMPLEX WITH JRNL TITL 4 TRYPSIN. JRNL REF J.BIOCHEM.(TOKYO) V. 116 18 1994 JRNL REFN ISSN 0021-924X JRNL PMID 7798176 REMARK 2 REMARK 2 RESOLUTION. 2.10 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.10 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : NULL REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : NULL 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 SET) : 0.190 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 ESTIMATED ERROR OF FREE R VALUE : NULL REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : NULL REMARK 3 BIN RESOLUTION RANGE HIGH (A) : NULL REMARK 3 BIN RESOLUTION RANGE LOW (A) : NULL REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 REFLECTIONS IN BIN (WORKING SET) : NULL REMARK 3 BIN R VALUE (WORKING SET) : NULL REMARK 3 BIN FREE R VALUE : NULL REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 BIN FREE R VALUE TEST SET COUNT : NULL REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1694 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 1 REMARK 3 SOLVENT ATOMS : 83 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 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : NULL REMARK 3 ESD FROM C-V SIGMAA (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.014 REMARK 3 BOND ANGLES (DEGREES) : 2.710 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 15.10 REMARK 3 IMPROPER ANGLES (DEGREES) : NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : 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 NCS MODEL : NULL REMARK 3 REMARK 3 NCS RESTRAINTS. RMS SIGMA/WEIGHT REMARK 3 GROUP 1 POSITIONAL (A) : NULL ; NULL REMARK 3 GROUP 1 B-FACTOR (A**2) : NULL ; NULL REMARK 3 REMARK 3 PARAMETER FILE 1 : NULL REMARK 3 TOPOLOGY FILE 1 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1SMF 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_1000176429. 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 (%): 54.71 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.72 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 31.61500 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 34.77000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 31.81000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 34.77000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 31.61500 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 31.81000 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: DIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 1090 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 9210 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -17.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: E, I 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 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 GLU I 1 REMARK 465 PRO I 2 REMARK 465 CYS I 3 REMARK 465 CYS I 4 REMARK 465 ASP I 5 REMARK 465 SER I 6 REMARK 465 CYS I 7 REMARK 465 ARG I 8 REMARK 465 HIS I 18 REMARK 465 CYS I 19 REMARK 465 ALA I 20 REMARK 465 ASN I 21 REMARK 465 ILE I 22 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 HD22 ASN E 48 H GLN E 50 1.31 REMARK 500 HZ3 LYS I 11 H2 HOH E 248 1.33 REMARK 500 HD21 ASN E 100 HD22 ASN E 179 1.34 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 ASN E 25 CA - CB - CG ANGL. DEV. = 13.8 DEGREES REMARK 500 LYS E 60 CB - CG - CD ANGL. DEV. = -20.0 DEGREES REMARK 500 ARG E 66 NH1 - CZ - NH2 ANGL. DEV. = -8.0 DEGREES REMARK 500 ARG E 66 NE - CZ - NH1 ANGL. DEV. = 3.5 DEGREES REMARK 500 ARG E 66 NE - CZ - NH2 ANGL. DEV. = -4.8 DEGREES REMARK 500 LEU E 67 CA - CB - CG ANGL. DEV. = 16.3 DEGREES REMARK 500 CYS I 17 CA - C - O ANGL. DEV. = 39.8 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 ASP E 71 -66.90 -129.69 REMARK 500 ASN E 115 -136.31 -168.37 REMARK 500 SER E 214 -69.73 -128.72 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: PLANAR GROUPS REMARK 500 REMARK 500 PLANAR GROUPS IN THE FOLLOWING RESIDUES HAVE A TOTAL REMARK 500 RMS DISTANCE OF ALL ATOMS FROM THE BEST-FIT PLANE REMARK 500 BY MORE THAN AN EXPECTED VALUE OF 6*RMSD, WITH AN REMARK 500 RMSD 0.02 ANGSTROMS, OR AT LEAST ONE ATOM HAS REMARK 500 AN RMSD GREATER THAN THIS VALUE REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 M RES CSSEQI RMS TYPE REMARK 500 ARG E 66 0.26 SIDE CHAIN REMARK 500 ARG E 117 0.18 SIDE CHAIN 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 E 0 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU E 70 OE1 REMARK 620 2 ASN E 72 O 82.5 REMARK 620 3 VAL E 75 O 154.1 81.8 REMARK 620 4 GLU E 80 OE2 107.9 157.6 94.3 REMARK 620 5 HOH E 251 O 75.0 92.8 85.3 108.9 REMARK 620 6 HOH E 277 O 81.8 77.7 114.5 84.1 155.9 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 E 0 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR CHAIN I OF BOWMAN-BIRK TYPE REMARK 800 TRYPSIN INHIBITOR REMARK 999 REMARK 999 SEQUENCE REMARK 999 BOWMAN-BIRK INHIBITOR IS A SYNTHESIZED PEPTIDE BASED ON REMARK 999 MIMIC MUNG BEAN TRYPSIN INHIBITOR LYSINE FRAGMENT. THE REMARK 999 SEQUENCE GIVEN BELOW IS THE CORRECTED SEQUENCE OF LI, Y. L. REMARK 999 CHI, C. W. (SCIENCE IN CHINA, B24, 42, 1994). THE SEQUENCE REMARK 999 DIFFERS FROM THAT OF SWISS-PROT ENTRY IBB_PHAAU AT THE REMARK 999 FOLLOWING POSITIONS: REMARK 999 REMARK 999 SWISS-PROT RESIDUE PDB SEQRES REMARK 999 REMARK 999 NAME NUMBER NAME CHAIN SEQ REMARK 999 LYS 22 ILE I 13 REMARK 999 GLN 25 GLU I 16 DBREF 1SMF E 16 245 UNP P00760 TRY1_BOVIN 21 243 DBREF 1SMF I 1 22 UNP P01062 IBB_VIGRR 10 31 SEQADV 1SMF ARG I 8 UNP P01062 ASP 17 CONFLICT SEQRES 1 E 223 ILE VAL GLY GLY TYR THR CYS GLY ALA ASN THR VAL PRO SEQRES 2 E 223 TYR GLN VAL SER LEU ASN SER GLY TYR HIS PHE CYS GLY SEQRES 3 E 223 GLY SER LEU ILE ASN SER GLN TRP VAL VAL SER ALA ALA SEQRES 4 E 223 HIS CYS TYR LYS SER GLY ILE GLN VAL ARG LEU GLY GLU SEQRES 5 E 223 ASP ASN ILE ASN VAL VAL GLU GLY ASN GLU GLN PHE ILE SEQRES 6 E 223 SER ALA SER LYS SER ILE VAL HIS PRO SER TYR ASN SER SEQRES 7 E 223 ASN THR LEU ASN ASN ASP ILE MET LEU ILE LYS LEU LYS SEQRES 8 E 223 SER ALA ALA SER LEU ASN SER ARG VAL ALA SER ILE SER SEQRES 9 E 223 LEU PRO THR SER CYS ALA SER ALA GLY THR GLN CYS LEU SEQRES 10 E 223 ILE SER GLY TRP GLY ASN THR LYS SER SER GLY THR SER SEQRES 11 E 223 TYR PRO ASP VAL LEU LYS CYS LEU LYS ALA PRO ILE LEU SEQRES 12 E 223 SER ASP SER SER CYS LYS SER ALA TYR PRO GLY GLN ILE SEQRES 13 E 223 THR SER ASN MET PHE CYS ALA GLY TYR LEU GLU GLY GLY SEQRES 14 E 223 LYS ASP SER CYS GLN GLY ASP SER GLY GLY PRO VAL VAL SEQRES 15 E 223 CYS SER GLY LYS LEU GLN GLY ILE VAL SER TRP GLY SER SEQRES 16 E 223 GLY CYS ALA GLN LYS ASN LYS PRO GLY VAL TYR THR LYS SEQRES 17 E 223 VAL CYS ASN TYR VAL SER TRP ILE LYS GLN THR ILE ALA SEQRES 18 E 223 SER ASN SEQRES 1 I 22 GLU PRO CYS CYS ASP SER CYS ARG CYS THR LYS SER ILE SEQRES 2 I 22 PRO PRO GLU CYS HIS CYS ALA ASN ILE HET CA E 0 1 HETNAM CA CALCIUM ION FORMUL 3 CA CA 2+ FORMUL 4 HOH *83(H2 O) HELIX 1 H1 SER E 164 PRO E 173 1 10 HELIX 2 H2 TYR E 234 ASN E 245 1 12 SHEET 1 A 7 TYR E 20 THR E 21 0 SHEET 2 A 7 LYS E 156 PRO E 161 -1 N CYS E 157 O TYR E 20 SHEET 3 A 7 GLN E 135 GLY E 140 -1 N CYS E 136 O ALA E 160 SHEET 4 A 7 PRO E 198 CYS E 201 -1 O PRO E 198 N SER E 139 SHEET 5 A 7 LYS E 204 TRP E 215 -1 O LYS E 204 N CYS E 201 SHEET 6 A 7 GLY E 226 LYS E 230 -1 N VAL E 227 O TRP E 215 SHEET 7 A 7 MET E 180 ALA E 183 -1 O PHE E 181 N TYR E 228 SHEET 1 B 7 GLN E 30 ASN E 34 0 SHEET 2 B 7 HIS E 40 ASN E 48 -1 N PHE E 41 O LEU E 33 SHEET 3 B 7 TRP E 51 SER E 54 -1 O TRP E 51 N ILE E 47 SHEET 4 B 7 MET E 104 LEU E 108 -1 O MET E 104 N SER E 54 SHEET 5 B 7 GLN E 81 VAL E 90 -1 N SER E 86 O LYS E 107 SHEET 6 B 7 GLN E 64 LEU E 67 -1 N VAL E 65 O ILE E 83 SHEET 7 B 7 GLN E 30 ASN E 34 -1 O SER E 32 N ARG E 66 SSBOND 1 CYS E 22 CYS E 157 1555 1555 2.01 SSBOND 2 CYS E 42 CYS E 58 1555 1555 2.03 SSBOND 3 CYS E 128 CYS E 232 1555 1555 2.03 SSBOND 4 CYS E 136 CYS E 201 1555 1555 2.03 SSBOND 5 CYS E 168 CYS E 182 1555 1555 2.04 SSBOND 6 CYS E 191 CYS E 220 1555 1555 2.03 SSBOND 7 CYS I 9 CYS I 17 1555 1555 2.03 LINK CA CA E 0 OE1 GLU E 70 1555 1555 2.49 LINK CA CA E 0 O ASN E 72 1555 1555 2.39 LINK CA CA E 0 O VAL E 75 1555 1555 2.20 LINK CA CA E 0 OE2 GLU E 80 1555 1555 2.47 LINK CA CA E 0 O HOH E 251 1555 1555 2.37 LINK CA CA E 0 O HOH E 277 1555 1555 2.39 CISPEP 1 ILE I 13 PRO I 14 0 -5.29 SITE 1 AC1 6 GLU E 70 ASN E 72 VAL E 75 GLU E 80 SITE 2 AC1 6 HOH E 251 HOH E 277 SITE 1 AC2 18 HIS E 40 PHE E 41 HIS E 57 TYR E 151 SITE 2 AC2 18 ASP E 189 SER E 190 CYS E 191 GLN E 192 SITE 3 AC2 18 GLY E 193 ASP E 194 SER E 195 SER E 214 SITE 4 AC2 18 TRP E 215 GLY E 216 HOH E 248 HOH E 296 SITE 5 AC2 18 HOH I 23 HOH I 24 CRYST1 63.230 63.620 69.540 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 0.015815 0.000000 0.000000 0.00000 SCALE2 0.000000 0.015718 0.000000 0.00000 SCALE3 0.000000 0.000000 0.014380 0.00000