HEADER HYDROLASE (SERINE PROTEASE) 07-JUN-94 1EPT TITLE REFINED 1.8 ANGSTROMS RESOLUTION CRYSTAL STRUCTURE OF PORCINE EPSILON- TITLE 2 TRYPSIN COMPND MOL_ID: 1; COMPND 2 MOLECULE: PORCINE E-TRYPSIN; COMPND 3 CHAIN: A; COMPND 4 EC: 3.4.21.4; COMPND 5 ENGINEERED: YES; COMPND 6 MOL_ID: 2; COMPND 7 MOLECULE: PORCINE E-TRYPSIN; COMPND 8 CHAIN: B; COMPND 9 EC: 3.4.21.4; COMPND 10 ENGINEERED: YES; COMPND 11 MOL_ID: 3; COMPND 12 MOLECULE: PORCINE E-TRYPSIN; COMPND 13 CHAIN: C; COMPND 14 EC: 3.4.21.4; COMPND 15 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SUS SCROFA; SOURCE 3 ORGANISM_COMMON: PIG; SOURCE 4 ORGANISM_TAXID: 9823; SOURCE 5 MOL_ID: 2; SOURCE 6 ORGANISM_SCIENTIFIC: SUS SCROFA; SOURCE 7 ORGANISM_COMMON: PIG; SOURCE 8 ORGANISM_TAXID: 9823; SOURCE 9 MOL_ID: 3; SOURCE 10 ORGANISM_SCIENTIFIC: SUS SCROFA; SOURCE 11 ORGANISM_COMMON: PIG; SOURCE 12 ORGANISM_TAXID: 9823 KEYWDS HYDROLASE (SERINE PROTEASE) EXPDTA X-RAY DIFFRACTION AUTHOR Q.HUANG,Z.WANG,Y.LI,S.LIU,Y.TANG REVDAT 4 05-JUN-24 1EPT 1 REMARK SEQADV LINK REVDAT 3 24-FEB-09 1EPT 1 VERSN REVDAT 2 01-APR-03 1EPT 1 JRNL REVDAT 1 07-FEB-95 1EPT 0 JRNL AUTH Q.HUANG,Z.WANG,Y.LI,S.LIU,Y.TANG JRNL TITL REFINED 1.8 A RESOLUTION CRYSTAL STRUCTURE OF THE PORCINE JRNL TITL 2 EPSILON-TRYPSIN. JRNL REF BIOCHIM.BIOPHYS.ACTA V.1209 77 1994 JRNL REFN ISSN 0006-3002 JRNL PMID 7947985 JRNL DOI 10.1016/0167-4838(94)90139-2 REMARK 2 REMARK 2 RESOLUTION. 1.80 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) : 1.80 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 7.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 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 : 11691 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) : 0.184 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 : 1644 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 1 REMARK 3 SOLVENT ATOMS : 72 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) : 0.010 REMARK 3 BOND ANGLES (DEGREES) : 1.260 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 27.50 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 1EPT 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_1000173124. 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 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 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 (%): 39.49 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.03 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 38.45000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 23.30000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 26.70000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 23.30000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 38.45000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 26.70000 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: TRIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TRIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 9750 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 8750 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -81.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, C 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 480 REMARK 480 ZERO OCCUPANCY ATOM REMARK 480 THE FOLLOWING RESIDUES HAVE ATOMS MODELED WITH ZERO REMARK 480 OCCUPANCY. THE LOCATION AND PROPERTIES OF THESE ATOMS REMARK 480 MAY NOT BE RELIABLE. (M=MODEL NUMBER; RES=RESIDUE NAME; REMARK 480 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE): REMARK 480 M RES C SSEQI ATOMS REMARK 480 SER A 37 O OG REMARK 480 ASN A 48 CB ND2 REMARK 480 GLN A 50 CB REMARK 480 SER B 61 N OG REMARK 480 ARG B 62 CB CG CD NE CZ NH1 NH2 REMARK 480 LEU B 76 CD1 REMARK 480 GLU B 77 CB REMARK 480 GLY B 78 N CA REMARK 480 ASN B 79 CB CG OD1 ND2 REMARK 480 PRO B 92 CG REMARK 480 ASN B 97 CA O CB CG OD1 ND2 REMARK 480 THR B 98 N CG2 REMARK 480 SER B 109 OG REMARK 480 SER B 116 N CA CB OG REMARK 480 ARG B 117 CB CG CD NE CZ NH1 NH2 REMARK 480 SER B 122 OG REMARK 480 ARG B 125 CG CZ NH1 NH2 REMARK 480 GLU B 135 CG CD OE1 REMARK 480 LYS B 145 O CD CE NZ OXT REMARK 480 SER C 146 N CA C O CB OG REMARK 480 SER C 147 N CA C O CB OG REMARK 480 GLY C 148 N CA C O REMARK 480 SER C 149 N CA O CB OG REMARK 480 SER C 150 CA CB REMARK 480 TYR C 151 CD1 CE1 OH REMARK 480 LYS C 159 CD CE NZ REMARK 480 ASN C 165 N CA O CG OD1 ND2 REMARK 480 SER C 166 CA CB REMARK 480 GLN C 186 CG CD OE1 NE2 REMARK 480 GLN C 192 CG REMARK 480 TYR C 217 CG CD1 CD2 CE1 CE2 CZ OH REMARK 480 GLN C 221 CD OE1 REMARK 480 LYS C 222 CG CD CE NZ REMARK 480 GLN C 239 CG CD OE1 NE2 REMARK 480 ALA C 244 C REMARK 480 ASN C 245 N CB REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS REMARK 500 REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC REMARK 500 SYMMETRY ARE IN CLOSE CONTACT. AN ATOM LOCATED WITHIN 0.15 REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375 REMARK 500 INSTEAD OF REMARK 500. ATOMS WITH NON-BLANK ALTERNATE REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS. REMARK 500 REMARK 500 DISTANCE CUTOFF: REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI SSYMOP DISTANCE REMARK 500 H1 HOH C 5 O HOH C 20 4465 1.50 REMARK 500 HE21 GLN C 221 OE1 GLN C 239 3645 1.53 REMARK 500 NE2 GLN C 221 OE1 GLN C 239 3645 2.10 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 SER A 54 -157.23 -144.17 REMARK 500 HIS B 71 -57.39 -135.01 REMARK 500 ASN B 115 -160.42 -169.00 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 B 146 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU B 70 OE1 REMARK 620 2 ASN B 72 O 86.2 REMARK 620 3 VAL B 75 O 153.8 81.7 REMARK 620 4 GLU B 77 OE2 90.3 89.3 112.6 REMARK 620 5 GLU B 80 OE2 102.4 171.3 90.4 90.5 REMARK 620 6 HOH B 157 O 77.3 90.1 79.6 167.6 91.9 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 B 146 DBREF 1EPT A 16 60 UNP P00761 TRYP_PIG 9 51 DBREF 1EPT B 61 145 UNP P00761 TRYP_PIG 52 133 DBREF 1EPT C 146 245 UNP P00761 TRYP_PIG 134 231 SEQADV 1EPT ASN C 165 UNP P00761 ASP 153 CONFLICT SEQADV 1EPT GLN C 186 UNP P00761 GLU 175 CONFLICT SEQRES 1 A 43 ILE VAL GLY GLY TYR THR CYS ALA ALA ASN SER ILE PRO SEQRES 2 A 43 TYR GLN VAL SER LEU ASN SER GLY SER HIS PHE CYS GLY SEQRES 3 A 43 GLY SER LEU ILE ASN SER GLN TRP VAL VAL SER ALA ALA SEQRES 4 A 43 HIS CYS TYR LYS SEQRES 1 B 82 SER ARG ILE GLN VAL ARG LEU GLY GLU HIS ASN ILE ASP SEQRES 2 B 82 VAL LEU GLU GLY ASN GLU GLN PHE ILE ASN ALA ALA LYS SEQRES 3 B 82 ILE ILE THR HIS PRO ASN PHE ASN GLY ASN THR LEU ASP SEQRES 4 B 82 ASN ASP ILE MET LEU ILE LYS LEU SER SER PRO ALA THR SEQRES 5 B 82 LEU ASN SER ARG VAL ALA THR VAL SER LEU PRO ARG SER SEQRES 6 B 82 CYS ALA ALA ALA GLY THR GLU CYS LEU ILE SER GLY TRP SEQRES 7 B 82 GLY ASN THR LYS SEQRES 1 C 98 SER SER GLY SER SER TYR PRO SER LEU LEU GLN CYS LEU SEQRES 2 C 98 LYS ALA PRO VAL LEU SER ASN SER SER CYS LYS SER SER SEQRES 3 C 98 TYR PRO GLY GLN ILE THR GLY ASN MET ILE CYS VAL GLY SEQRES 4 C 98 PHE LEU GLN GLY GLY LYS ASP SER CYS GLN GLY ASP SER SEQRES 5 C 98 GLY GLY PRO VAL VAL CYS ASN GLY GLN LEU GLN GLY ILE SEQRES 6 C 98 VAL SER TRP GLY TYR GLY CYS ALA GLN LYS ASN LYS PRO SEQRES 7 C 98 GLY VAL TYR THR LYS VAL CYS ASN TYR VAL ASN TRP ILE SEQRES 8 C 98 GLN GLN THR ILE ALA ALA ASN HET CA B 146 1 HETNAM CA CALCIUM ION FORMUL 4 CA CA 2+ FORMUL 5 HOH *72(H2 O) HELIX 1 H1 SER C 164 PRO C 173 1 10 HELIX 2 H2 TYR C 234 ASN C 245 1 12 SHEET 1 A 7 TYR A 20 THR A 21 0 SHEET 2 A 7 GLN C 156 PRO C 161 -1 N CYS C 157 O TYR A 20 SHEET 3 A 7 GLU B 135 GLY B 140 -1 N CYS B 136 O ALA C 160 SHEET 4 A 7 PRO C 198 CYS C 201 -1 O PRO C 198 N SER B 139 SHEET 5 A 7 GLN C 204 TRP C 215 -1 O GLN C 204 N CYS C 201 SHEET 6 A 7 GLY C 226 LYS C 230 -1 N VAL C 227 O TRP C 215 SHEET 7 A 7 MET C 180 VAL C 183 -1 O ILE C 181 N TYR C 228 SHEET 1 B 7 GLN A 30 ASN A 34 0 SHEET 2 B 7 HIS A 40 ASN A 48 -1 N PHE A 41 O LEU A 33 SHEET 3 B 7 TRP A 51 SER A 54 -1 O TRP A 51 N ILE A 47 SHEET 4 B 7 MET B 104 LEU B 108 -1 O MET B 104 N SER A 54 SHEET 5 B 7 GLN B 81 THR B 90 -1 N ALA B 86 O LYS B 107 SHEET 6 B 7 GLN B 64 LEU B 67 -1 N VAL B 65 O ILE B 83 SHEET 7 B 7 GLN A 30 ASN A 34 -1 O SER A 32 N ARG B 66 SSBOND 1 CYS A 22 CYS C 157 1555 1555 2.05 SSBOND 2 CYS A 42 CYS A 58 1555 1555 2.03 SSBOND 3 CYS B 128 CYS C 232 1555 1555 2.04 SSBOND 4 CYS B 136 CYS C 201 1555 1555 2.04 SSBOND 5 CYS C 168 CYS C 182 1555 1555 2.04 SSBOND 6 CYS C 191 CYS C 220 1555 1555 2.04 LINK OE1 GLU B 70 CA CA B 146 1555 1555 2.26 LINK O ASN B 72 CA CA B 146 1555 1555 2.53 LINK O VAL B 75 CA CA B 146 1555 1555 2.31 LINK OE2 GLU B 77 CA CA B 146 1555 1555 2.28 LINK OE2 GLU B 80 CA CA B 146 1555 1555 2.25 LINK CA CA B 146 O HOH B 157 1555 1555 2.61 SITE 1 AC1 6 GLU B 70 ASN B 72 VAL B 75 GLU B 77 SITE 2 AC1 6 GLU B 80 HOH B 157 CRYST1 76.900 53.400 46.600 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 0.013004 0.000000 0.000000 0.00000 SCALE2 0.000000 0.018727 0.000000 0.00000 SCALE3 0.000000 0.000000 0.021459 0.00000