HEADER HYDROLASE/HYDROLASE INHIBITOR 05-MAY-99 1MCU OBSLTE 31-MAY-00 1MCU 1F2S TITLE CRYSTAL STRUCTURE OF THE COMPLEX FORMED BETWEEN BOVINE BETA- TITLE 2 TRYPSIN AND MCTI-A, A TRYPSIN INHIBITOR OF SQUASH FAMILY TITLE 3 AT 1.8A RESOLUTION COMPND MOL_ID: 1; COMPND 2 MOLECULE: PROTEIN (TRYPSIN); COMPND 3 CHAIN: E; COMPND 4 EC: 3.4.21.4; COMPND 5 ENGINEERED: YES; COMPND 6 MOL_ID: 2; COMPND 7 MOLECULE: PROTEIN (TRYPSIN INHIBITOR A); COMPND 8 CHAIN: I SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: BOS TAURUS; SOURCE 3 ORGANISM_COMMON: BOVINE; SOURCE 4 ORGAN: PANCREATIC; SOURCE 5 EXPRESSION_SYSTEM: E.COLI; SOURCE 6 MOL_ID: 2; SOURCE 7 ORGANISM_SCIENTIFIC: MOMORDICA CHARANTIA; SOURCE 8 ORGANISM_COMMON: BITTER GOURD SEEDS KEYWDS COMPLEX(PROTEINASE/INHIBITOR) EXPDTA X-RAY DIFFRACTION AUTHOR Q.HUANG,Y.ZHUY,Y.TANG REVDAT 5 01-APR-03 1MCU 1 JRNL REVDAT 4 31-MAY-00 1MCU 1 OBSLTE REVDAT 3 31-MAR-00 1MCU 1 REMARK ATOM DBREF REVDAT 2 23-DEC-99 1MCU 1 JRNL COMPND SOURCE REVDAT 1 20-MAY-99 1MCU 0 JRNL AUTH Y.ZHU,Q.HUANG,M.QIAN,Y.JIA,Y.TANG JRNL TITL CRYSTAL STRUCTURE OF THE COMPLEX FORMED BETWEEN JRNL TITL 2 BOVINE BETA-TRYPSIN AND MCTI-A, A TRYPSIN JRNL TITL 3 INHIBITOR OF SQUASH FAMILY, AT 1.8-A RESOLUTION. JRNL REF J.PROTEIN CHEM. V. 18 505 1999 JRNL REFN ASTM JPCHD2 UK ISSN 0277-8033 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH Q.HUANG,S.LIU,Y.TANG REMARK 1 TITL REFINED 1.6A RESOLUTION CRYSTAL STRUCTURE OF THE REMARK 1 TITL 2 COMPLEX FORMED BETWEEN PORCINE BETA-TRYPSIN AND REMARK 1 TITL 3 MCTI-A, A TRYPSIN INHIBITOR OF THE SQUASH FAMILY REMARK 1 REF J.MOL.BIOL. V. 229 1022 1993 REMARK 1 REFN ASTM JMOBAK UK ISSN 0022-2836 REMARK 1 REFERENCE 2 REMARK 1 AUTH Q.HUANG,S.LIU,Y.TANG,F.ZENG,R.QIAN REMARK 1 TITL AMINO ACID SEQUENCING OF A TRYPSIN INHIBITOR BY REMARK 1 TITL 2 REFINED 1.6A X-RAY CRYSTAL STRUCTURE OF ITS REMARK 1 TITL 3 COMPLEX WITH PORCINE BETA-TRYPSIN REMARK 1 REF FEBS LETT. V. 297 143 1992 REMARK 1 REFN ASTM FEBLAL NE ISSN 0014-5793 REMARK 2 REMARK 2 RESOLUTION. 1.80 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 3.1 REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.80 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 7.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 86.3 REMARK 3 NUMBER OF REFLECTIONS : 20739 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING SET) : 0.185 REMARK 3 FREE R VALUE : 0.222 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.000 REMARK 3 FREE R VALUE TEST SET COUNT : 2020 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 : 8 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 1.79 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.87 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 63.80 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 1840 REMARK 3 BIN R VALUE (WORKING SET) : 0.2750 REMARK 3 BIN FREE R VALUE : 0.2860 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 10.00 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 182 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 : 1841 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 1 REMARK 3 SOLVENT ATOMS : 166 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 23.20 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) : 0.006 REMARK 3 BOND ANGLES (DEGREES) : 1.40 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 26.10 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.16 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 : PARAM19X.PRO REMARK 3 PARAMETER FILE 2 : PARHCSDX.PRO REMARK 3 PARAMETER FILE 3 : PARDNA.PRO REMARK 3 PARAMETER FILE 4 : NULL REMARK 3 TOPOLOGY FILE 1 : TOPH19X.PRO REMARK 3 TOPOLOGY FILE 2 : TOPHCSDX.PRO REMARK 3 TOPOLOGY FILE 3 : TOPDNA.PRO REMARK 3 TOPOLOGY FILE 4 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1MCU COMPLIES WITH FORMAT V. 2.3, 09-JULY-1998 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 11-MAY-1999. REMARK 100 THE RCSB ID CODE IS RCSB001004. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : OCT-1998 REMARK 200 TEMPERATURE (KELVIN) : 297.0 REMARK 200 PH : 5.10 REMARK 200 NUMBER OF CRYSTALS USED : 2 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 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : GRAPHITE REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU REMARK 200 INTENSITY-INTEGRATION SOFTWARE : NULL REMARK 200 DATA SCALING SOFTWARE : NULL REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 20739 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.800 REMARK 200 RESOLUTION RANGE LOW (A) : 75.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 1.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 86.3 REMARK 200 DATA REDUNDANCY : 2.500 REMARK 200 R MERGE (I) : 0.07600 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 9.6000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.79 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.87 REMARK 200 COMPLETENESS FOR SHELL (%) : 63.8 REMARK 200 DATA REDUNDANCY IN SHELL : 2.50 REMARK 200 R MERGE FOR SHELL (I) : 0.05500 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: NULL REMARK 200 STARTING MODEL: 1PPE REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 47.28 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.33 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PH 5.10 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 1/2-X,-Y,1/2+Z REMARK 290 3555 -X,1/2+Y,1/2-Z REMARK 290 4555 1/2+X,1/2-Y,-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 29.88000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 37.23500 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 27.77500 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 37.23500 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 29.88000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 27.77500 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 THIS ENTRY CONTAINS THE CRYSTALLOGRAPHIC ASYMMETRIC UNIT REMARK 300 WHICH CONSISTS OF 2 CHAIN(S). SEE REMARK 350 FOR REMARK 300 INFORMATION ON GENERATING THE BIOLOGICAL MOLECULE(S). REMARK 350 REMARK 350 GENERATING THE BIOMOLECULE 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 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 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),F6.3) REMARK 500 REMARK 500 EXPECTED VALUES: ENGH AND HUBER, 1991 REMARK 500 REMARK 500 M RES CSSEQI ATM1 RES CSSEQI ATM2 DEVIATION REMARK 500 MET E 180 SD MET E 180 CE -0.041 REMARK 500 MET I 324 SD MET I 324 CE 0.042 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: ENGH AND HUBER, 1991 REMARK 500 REMARK 500 M RES CSSEQI ATM1 ATM2 ATM3 REMARK 500 GLY E 23 N - CA - C ANGL. DEV. = -9.3 DEGREES REMARK 500 VAL E 27 N - CA - C ANGL. DEV. = -9.1 DEGREES REMARK 500 ASP E 71 N - CA - C ANGL. DEV. = -9.5 DEGREES REMARK 500 SER E 190 N - CA - C ANGL. DEV. = -8.8 DEGREES REMARK 500 PRO E 198 N - CA - C ANGL. DEV. = 9.0 DEGREES REMARK 500 VAL E 199 N - CA - C ANGL. DEV. =-12.7 DEGREES REMARK 525 REMARK 525 SOLVENT REMARK 525 THE FOLLOWING SOLVENT MOLECULES LIE FARTHER THAN EXPECTED REMARK 525 FROM THE PROTEIN OR NUCLEIC ACID MOLECULE AND MAY BE REMARK 525 ASSOCIATED WITH A SYMMETRY RELATED MOLECULE (M=MODEL REMARK 525 NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE REMARK 525 NUMBER; I=INSERTION CODE): REMARK 525 REMARK 525 M RES CSSEQI REMARK 525 HOH 505 DISTANCE = 20.40 ANGSTROMS REMARK 525 HOH 506 DISTANCE = 9.68 ANGSTROMS REMARK 525 HOH 528 DISTANCE = 6.33 ANGSTROMS REMARK 525 HOH 547 DISTANCE = 11.37 ANGSTROMS REMARK 525 HOH 550 DISTANCE = 8.46 ANGSTROMS REMARK 525 HOH 563 DISTANCE = 7.22 ANGSTROMS REMARK 525 HOH 566 DISTANCE = 12.66 ANGSTROMS REMARK 525 HOH 569 DISTANCE = 13.56 ANGSTROMS REMARK 525 HOH 570 DISTANCE = 6.29 ANGSTROMS DBREF 1MCU E 16 245 UNP P00760 TRY1_BOVIN 21 243 DBREF 1MCU I 301 328 UNP P10295 ITR2_MOMCH 1 28 SEQADV 1MCU E 167 UNP P00760 SER 167 DELETION SEQRES 1 E 222 ILE VAL GLY GLY TYR THR CYS GLY ALA ASN THR VAL PRO SEQRES 2 E 222 TYR GLN VAL SER LEU ASN SER GLY TYR HIS PHE CYS GLY SEQRES 3 E 222 GLY SER LEU ILE ASN SER GLN TRP VAL VAL SER ALA ALA SEQRES 4 E 222 HIS CYS TYR LYS SER GLY ILE GLN VAL ARG LEU GLY GLU SEQRES 5 E 222 ASP ASN ILE ASN VAL VAL GLU GLY ASN GLU GLN PHE ILE SEQRES 6 E 222 SER ALA SER LYS SER ILE VAL HIS PRO SER TYR ASN SER SEQRES 7 E 222 ASN THR LEU ASN ASN ASP ILE MET LEU ILE LYS LEU LYS SEQRES 8 E 222 SER ALA ALA SER LEU ASN SER ARG VAL ALA SER ILE SER SEQRES 9 E 222 LEU PRO THR SER CYS ALA SER ALA GLY THR GLN CYS LEU SEQRES 10 E 222 ILE SER GLY TRP GLY ASN THR LYS SER SER GLY THR SER SEQRES 11 E 222 TYR PRO ASP VAL LEU LYS CYS LEU LYS ALA PRO ILE LEU SEQRES 12 E 222 SER ASP SER CYS LYS SER ALA TYR PRO GLY GLN ILE THR SEQRES 13 E 222 SER ASN MET PHE CYS ALA GLY TYR LEU GLU GLY GLY LYS SEQRES 14 E 222 ASP SER CYS GLN GLY ASP SER GLY GLY PRO VAL VAL CYS SEQRES 15 E 222 SER GLY LYS LEU GLN GLY ILE VAL SER TRP GLY SER GLY SEQRES 16 E 222 CYS ALA GLN LYS ASN LYS PRO GLY VAL TYR THR LYS VAL SEQRES 17 E 222 CYS ASN TYR VAL SER TRP ILE LYS GLN THR ILE ALA SER SEQRES 18 E 222 ASN SEQRES 1 I 28 ARG ILE CYS PRO ARG ILE TRP MET GLU CYS LYS ARG ASP SEQRES 2 I 28 SER ASP CYS MET ALA GLU CYS ILE CYS VAL MET GLY HIS SEQRES 3 I 28 CYS GLY HET CA 801 1 HETNAM CA CALCIUM ION FORMUL 3 CA CA 2+ FORMUL 4 HOH *166(H2 O1) HELIX 1 1 ALA E 56 CYS E 58 5 3 HELIX 2 2 SER E 166 ALA E 171 1 5 HELIX 3 3 VAL E 231 ASN E 233 5 3 HELIX 4 4 VAL E 235 ILE E 242 1 8 HELIX 5 5 ASP I 313 ASP I 315 5 3 SHEET 1 A 7 GLN E 81 SER E 84 0 SHEET 2 A 7 GLN E 64 LEU E 67 -1 N LEU E 67 O GLN E 81 SHEET 3 A 7 GLN E 30 ASN E 34 -1 N ASN E 34 O GLN E 64 SHEET 4 A 7 HIS E 40 ASN E 48 -1 N GLY E 44 O VAL E 31 SHEET 5 A 7 TRP E 51 SER E 54 -1 N VAL E 53 O SER E 45 SHEET 6 A 7 MET E 104 LEU E 108 -1 N ILE E 106 O VAL E 52 SHEET 7 A 7 ALA E 85 VAL E 90 -1 N ILE E 89 O LEU E 105 SHEET 1 B 2 GLN E 135 GLY E 140 0 SHEET 2 B 2 LYS E 156 PRO E 161 -1 N ALA E 160 O CYS E 136 SHEET 1 C 4 MET E 180 ALA E 183 0 SHEET 2 C 4 GLY E 226 LYS E 230 -1 N TYR E 228 O PHE E 181 SHEET 3 C 4 LYS E 204 TRP E 215 -1 N TRP E 215 O VAL E 227 SHEET 4 C 4 PRO E 198 CYS E 201 -1 N CYS E 201 O LYS E 204 SSBOND 1 CYS E 22 CYS E 157 SSBOND 2 CYS E 42 CYS E 58 SSBOND 3 CYS E 128 CYS E 232 SSBOND 4 CYS E 136 CYS E 201 SSBOND 5 CYS E 168 CYS E 182 SSBOND 6 CYS E 191 CYS E 220 SSBOND 7 CYS I 303 CYS I 320 SSBOND 8 CYS I 310 CYS I 322 SSBOND 9 CYS I 316 CYS I 327 CRYST1 59.760 55.550 74.470 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 0.016734 0.000000 0.000000 0.00000 SCALE2 0.000000 0.018002 0.000000 0.00000 SCALE3 0.000000 0.000000 0.013428 0.00000