PDB Short entry for 1F2S HEADER HYDROLASE/HYDROLASE INHIBITOR 29-MAY-00 1F2S TITLE CRYSTAL STRUCTURE OF THE COMPLEX FORMED BETWEEN BOVINE BETA-TRYPSIN TITLE 2 AND MCTI-A, A TRYPSIN INHIBITOR OF SQUASH FAMILY AT 1.8 A RESOLUTION COMPND MOL_ID: 1; COMPND 2 MOLECULE: TRYPSIN; COMPND 3 CHAIN: E; COMPND 4 EC: 3.4.21.4; COMPND 5 MOL_ID: 2; COMPND 6 MOLECULE: TRYPSIN INHIBITOR A; COMPND 7 CHAIN: I SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: BOS TAURUS; SOURCE 3 ORGANISM_COMMON: CATTLE; SOURCE 4 ORGANISM_TAXID: 9913; SOURCE 5 ORGAN: PANCREATIC; SOURCE 6 OTHER_DETAILS: PANCREATIC; SOURCE 7 MOL_ID: 2; SOURCE 8 ORGANISM_SCIENTIFIC: MOMORDICA CHARANTIA; SOURCE 9 ORGANISM_COMMON: BALSAM PEAR; SOURCE 10 ORGANISM_TAXID: 3673; SOURCE 11 OTHER_DETAILS: SEED KEYWDS PROTEINASE-INHIBITOR COMPLEX, TRYPSIN, HYDROLASE-HYDROLASE INHIBITOR KEYWDS 2 COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR Y.ZHU,Q.HUANG,M.QIAN,Y.JIA,Y.TANG REVDAT 5 09-AUG-23 1F2S 1 REMARK SEQADV LINK REVDAT 4 04-OCT-17 1F2S 1 REMARK REVDAT 3 24-FEB-09 1F2S 1 VERSN REVDAT 2 01-APR-03 1F2S 1 JRNL REVDAT 1 05-JUN-00 1F2S 0 SPRSDE 31-MAY-00 1F2S 1MCU JRNL AUTH Y.ZHU,Q.HUANG,M.QIAN,Y.JIA,Y.TANG JRNL TITL CRYSTAL STRUCTURE OF THE COMPLEX FORMED BETWEEN BOVINE JRNL TITL 2 BETA-TRYPSIN AND MCTI-A, A TRYPSIN INHIBITOR OF SQUASH JRNL TITL 3 FAMILY, AT 1.8-A RESOLUTION. JRNL REF J.PROTEIN CHEM. V. 18 505 1999 JRNL REFN ISSN 0277-8033 JRNL PMID 10524768 JRNL DOI 10.1023/A:1020690931043 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 COMPLEX REMARK 1 TITL 2 FORMED BETWEEN PORCINE BETA-TRYPSIN AND MCTI-A, A TRYPSIN REMARK 1 TITL 3 INHIBITOR OF THE SQUASH FAMILY REMARK 1 REF J.MOL.BIOL. V. 229 1022 1993 REMARK 1 REFN ISSN 0022-2836 REMARK 1 DOI 10.1006/JMBI.1993.1102 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 REFINED 1.6A REMARK 1 TITL 2 X-RAY CRYSTAL STRUCTURE OF ITS COMPLEX WITH PORCINE REMARK 1 TITL 3 BETA-TRYPSIN REMARK 1 REF FEBS LETT. V. 297 143 1992 REMARK 1 REFN ISSN 0014-5793 REMARK 1 DOI 10.1016/0014-5793(92)80346-I REMARK 2 REMARK 2 RESOLUTION. 1.79 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) : 1.79 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) (%) : 86.2 REMARK 3 NUMBER OF REFLECTIONS : 20277 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) : 0.177 REMARK 3 FREE R VALUE : 0.226 REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : 1995 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 : 1847 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 1 REMARK 3 SOLVENT ATOMS : 207 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 20.90 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) : 0.007 REMARK 3 BOND ANGLES (DEGREES) : 1.410 REMARK 3 DIHEDRAL ANGLES (DEGREES) : NULL 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 : 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 1F2S COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 31-MAY-00. REMARK 100 THE DEPOSITION ID IS D_1000011173. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 26-OCT-98 REMARK 200 TEMPERATURE (KELVIN) : 297 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) : 1.54178 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS IIC REMARK 200 INTENSITY-INTEGRATION SOFTWARE : R-AXIS REMARK 200 DATA SCALING SOFTWARE : R-AXIS REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 20741 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.790 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 : 5.700 REMARK 200 R MERGE (I) : 0.08200 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 8.7000 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) : 1.86 REMARK 200 COMPLETENESS FOR SHELL (%) : 63.4 REMARK 200 DATA REDUNDANCY IN SHELL : 4.70 REMARK 200 R MERGE FOR SHELL (I) : 0.21300 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: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: X-PLOR REMARK 200 STARTING MODEL: 1PPE REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 47.09 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.32 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG6000, SODUIM PHOSPHATE BUFFER, PH REMARK 280 5.10, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 295K 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 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 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: 1690 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 10140 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -20.0 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 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 -75.67 -134.16 REMARK 500 ASN E 115 -157.70 -161.37 REMARK 500 SER E 150 108.84 -168.84 REMARK 500 SER E 214 -68.11 -120.29 REMARK 500 ARG I 305 40.37 -88.12 REMARK 500 ALA I 318 -121.60 38.69 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 800 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU E 70 OE1 REMARK 620 2 ASN E 72 O 88.5 REMARK 620 3 VAL E 75 O 166.3 87.1 REMARK 620 4 GLU E 80 OE2 99.6 150.2 90.6 REMARK 620 5 HOH E 410 O 87.7 83.4 104.7 68.5 REMARK 620 6 HOH E 559 O 77.6 109.2 91.6 100.6 160.1 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 800 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1MCT RELATED DB: PDB REMARK 900 PORCINE BETA-TRYPSIN COMPLEXED WITH INHIBITOR FROM BITTER GOURD DBREF 1F2S E 16 245 UNP P00760 TRY1_BOVIN 21 243 DBREF 1F2S I 301 328 UNP P10295 ITR2_MOMCH 1 28 SEQADV 1F2S MET I 324 UNP P10295 ASP 24 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 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 E 800 1 HETNAM CA CALCIUM ION FORMUL 3 CA CA 2+ FORMUL 4 HOH *207(H2 O) HELIX 1 1 ALA E 55 TYR E 59 5 5 HELIX 2 2 SER E 164 TYR E 172 1 9 HELIX 3 3 TYR E 234 ASN E 245 1 12 HELIX 4 4 ARG I 312 CYS I 316 5 5 SHEET 1 A 7 MET E 180 ALA E 183 0 SHEET 2 A 7 GLY E 226 LYS E 230 -1 O GLY E 226 N ALA E 183 SHEET 3 A 7 LYS E 204 GLY E 216 -1 O ILE E 212 N THR E 229 SHEET 4 A 7 PRO E 198 CYS E 201 -1 O VAL E 199 N GLN E 210 SHEET 5 A 7 GLN E 135 GLY E 140 -1 N LEU E 137 O VAL E 200 SHEET 6 A 7 LYS E 156 PRO E 161 -1 N LYS E 156 O GLY E 140 SHEET 7 A 7 TYR E 20 THR E 21 -1 O TYR E 20 N CYS E 157 SHEET 1 B 4 MET E 180 ALA E 183 0 SHEET 2 B 4 GLY E 226 LYS E 230 -1 O GLY E 226 N ALA E 183 SHEET 3 B 4 LYS E 204 GLY E 216 -1 O ILE E 212 N THR E 229 SHEET 4 B 4 CYS I 303 PRO I 304 -1 O CYS I 303 N GLY E 216 SHEET 1 C 7 GLN E 30 ASN E 34 0 SHEET 2 C 7 HIS E 40 ASN E 48 -1 N PHE E 41 O LEU E 33 SHEET 3 C 7 TRP E 51 SER E 54 -1 O TRP E 51 N ILE E 47 SHEET 4 C 7 MET E 104 LEU E 108 -1 N MET E 104 O SER E 54 SHEET 5 C 7 GLN E 81 VAL E 90 -1 N SER E 86 O LYS E 107 SHEET 6 C 7 GLN E 64 LEU E 67 -1 N VAL E 65 O ILE E 83 SHEET 7 C 7 GLN E 30 ASN E 34 -1 O SER E 32 N ARG E 66 SHEET 1 D 2 CYS I 322 VAL I 323 0 SHEET 2 D 2 HIS I 326 CYS I 327 -1 O HIS I 326 N VAL I 323 SSBOND 1 CYS E 22 CYS E 157 1555 1555 2.03 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 2.03 SSBOND 6 CYS E 191 CYS E 220 1555 1555 2.03 SSBOND 7 CYS I 303 CYS I 320 1555 1555 2.02 SSBOND 8 CYS I 310 CYS I 322 1555 1555 2.03 SSBOND 9 CYS I 316 CYS I 327 1555 1555 2.03 LINK OE1 GLU E 70 CA CA E 800 1555 1555 2.42 LINK O ASN E 72 CA CA E 800 1555 1555 2.09 LINK O VAL E 75 CA CA E 800 1555 1555 2.04 LINK OE2 GLU E 80 CA CA E 800 1555 1555 2.53 LINK O HOH E 410 CA CA E 800 1555 1555 2.15 LINK O HOH E 559 CA CA E 800 1555 1555 2.14 SITE 1 AC1 6 GLU E 70 ASN E 72 VAL E 75 GLU E 80 SITE 2 AC1 6 HOH E 410 HOH E 559 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