PDB Short entry for 2BTC HEADER HYDROLASE/HYDROLASE INHIBITOR 11-DEC-98 2BTC TITLE BOVINE TRYPSIN IN COMPLEX WITH SQUASH SEED INHIBITOR (CUCURBITA PEPO TITLE 2 TRYPSIN INHIBITOR II) COMPND MOL_ID: 1; COMPND 2 MOLECULE: PROTEIN (TRYPSIN); COMPND 3 CHAIN: E; COMPND 4 EC: 3.4.21.4; COMPND 5 MOL_ID: 2; COMPND 6 MOLECULE: PROTEIN (TRYPSIN INHIBITOR); COMPND 7 CHAIN: I; COMPND 8 SYNONYM: CPTI-II SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: BOS TAURUS; SOURCE 3 ORGANISM_COMMON: CATTLE; SOURCE 4 ORGANISM_TAXID: 9913; SOURCE 5 ORGAN: PANCREAS; SOURCE 6 MOL_ID: 2; SOURCE 7 ORGANISM_SCIENTIFIC: CUCURBITA PEPO; SOURCE 8 ORGANISM_TAXID: 3663; SOURCE 9 ORGAN: SQUASH SEEDS KEYWDS SERINE PROTEINASE, TRYPSIN INHIBITOR, HYDROLASE-HYDROLASE INHIBITOR KEYWDS 2 COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR R.HELLAND,G.I.BERGLUND,J.OTLEWSKI,W.APOSTOLUK,O.A.ANDERSEN, AUTHOR 2 N.P.WILLASSEN,A.O.SMALAS REVDAT 4 23-AUG-23 2BTC 1 REMARK LINK REVDAT 3 24-FEB-09 2BTC 1 VERSN REVDAT 2 01-APR-03 2BTC 1 JRNL REVDAT 1 19-JAN-00 2BTC 0 JRNL AUTH R.HELLAND,G.I.BERGLUND,J.OTLEWSKI,W.APOSTOLUK,O.A.ANDERSEN, JRNL AUTH 2 N.P.WILLASSEN,A.O.SMALAS JRNL TITL HIGH-RESOLUTION STRUCTURES OF THREE NEW JRNL TITL 2 TRYPSIN-SQUASH-INHIBITOR COMPLEXES: A DETAILED COMPARISON JRNL TITL 3 WITH OTHER TRYPSINS AND THEIR COMPLEXES. JRNL REF ACTA CRYSTALLOGR.,SECT.D V. 55 139 1999 JRNL REFN ISSN 0907-4449 JRNL PMID 10089404 JRNL DOI 10.1107/S090744499801052X REMARK 2 REMARK 2 RESOLUTION. 1.50 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 3.8 REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.50 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 6.00 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) (%) : 89.8 REMARK 3 NUMBER OF REFLECTIONS : 35087 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : THROUGHOUT REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING SET) : 0.183 REMARK 3 FREE R VALUE : 0.212 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 : 1850 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) : 15.10 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 18.30 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) : 0.10 REMARK 3 ESD FROM SIGMAA (A) : 0.18 REMARK 3 LOW RESOLUTION CUTOFF (A) : 6.00 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) : 0.012 REMARK 3 BOND ANGLES (DEGREES) : 2.538 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 : NULL REMARK 3 TOPOLOGY FILE 1 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 2BTC COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 14-DEC-98. REMARK 100 THE DEPOSITION ID IS D_1000000249. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : NULL REMARK 200 TEMPERATURE (KELVIN) : 293 REMARK 200 PH : 6.0 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : ESRF REMARK 200 BEAMLINE : BM1A REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.873 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO, CCP4 REMARK 200 DATA SCALING SOFTWARE : CCP4 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 60871 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.500 REMARK 200 RESOLUTION RANGE LOW (A) : 20.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 89.8 REMARK 200 DATA REDUNDANCY : 3.200 REMARK 200 R MERGE (I) : 0.08400 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: 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 (%): 46.92 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.32 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PH 6.0 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 29.55000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 37.45000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 27.85000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 37.45000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 29.55000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 27.85000 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: 1710 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 10080 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -23.0 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 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 E 61 CB OG REMARK 480 THR E 98 CG2 REMARK 480 LYS E 109 CE NZ REMARK 480 ARG E 117 CZ NH1 NH2 REMARK 480 LYS E 145 CD CE NZ REMARK 480 SER E 147 OG REMARK 480 ASP E 165 OD2 REMARK 480 LYS E 169 CE NZ REMARK 480 GLN E 175 OE1 NE2 REMARK 480 GLU E 186 OE1 OE2 REMARK 480 LYS E 222 CD CE NZ REMARK 480 LYS I 511 CD CE NZ REMARK 480 LEU I 523 CD1 REMARK 480 GLU I 524 CG CD OE1 OE2 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),1X,F6.3) 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 RES CSSEQI ATM2 DEVIATION REMARK 500 HIS E 91 NE2 HIS E 91 CD2 -0.070 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 TRP E 51 CD1 - CG - CD2 ANGL. DEV. = 6.7 DEGREES REMARK 500 TRP E 51 CE2 - CD2 - CG ANGL. DEV. = -5.7 DEGREES REMARK 500 TRP E 141 CD1 - CG - CD2 ANGL. DEV. = 6.1 DEGREES REMARK 500 TRP E 141 CE2 - CD2 - CG ANGL. DEV. = -5.5 DEGREES REMARK 500 TRP E 215 CD1 - CG - CD2 ANGL. DEV. = 6.6 DEGREES REMARK 500 TRP E 215 CE2 - CD2 - CG ANGL. DEV. = -5.4 DEGREES REMARK 500 TRP E 237 CD1 - CG - CD2 ANGL. DEV. = 6.2 DEGREES REMARK 500 TRP E 237 CE2 - CD2 - CG ANGL. DEV. = -5.5 DEGREES REMARK 500 ARG I 501 NE - CZ - NH1 ANGL. DEV. = 7.0 DEGREES REMARK 500 ARG I 501 NE - CZ - NH2 ANGL. DEV. = -9.4 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 -78.00 -126.03 REMARK 500 ASN E 115 -160.54 -163.69 REMARK 500 SER E 214 -68.84 -121.67 REMARK 500 LYS I 505 38.90 -93.82 REMARK 500 ALA I 518 -119.40 47.51 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 TYR E 59 0.07 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 700 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU E 70 OE1 REMARK 620 2 ASN E 72 O 88.2 REMARK 620 3 VAL E 75 O 164.2 87.3 REMARK 620 4 GLU E 80 OE2 98.8 163.4 89.6 REMARK 620 5 HOH E 722 O 84.0 85.9 110.7 80.0 REMARK 620 6 HOH E 860 O 80.0 101.9 86.1 94.2 161.9 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 700 DBREF 2BTC E 16 245 UNP P00760 TRY1_BOVIN 21 243 DBREF 2BTC I 501 529 UNP P10293 ITR3_CUCPE 4 32 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 29 ARG VAL CYS PRO LYS ILE LEU MET GLU CYS LYS LYS ASP SEQRES 2 I 29 SER ASP CYS LEU ALA GLU CYS ILE CYS LEU GLU HIS GLY SEQRES 3 I 29 TYR CYS GLY HET CA E 700 1 HETNAM CA CALCIUM ION FORMUL 3 CA CA 2+ FORMUL 4 HOH *166(H2 O) HELIX 1 1 ALA E 56 CYS E 58 5 3 HELIX 2 2 ASP E 165 ALA E 171 1 7 HELIX 3 3 VAL E 231 ALA E 243 5 13 HELIX 4 4 ASP I 513 ASP I 515 5 3 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 O LYS E 156 N GLY E 140 SHEET 7 A 7 TYR E 20 THR E 21 -1 O TYR E 20 N CYS E 157 SHEET 1 A1 4 MET E 180 ALA E 183 0 SHEET 2 A1 4 GLY E 226 LYS E 230 -1 O GLY E 226 N ALA E 183 SHEET 3 A1 4 LYS E 204 GLY E 216 -1 O ILE E 212 N THR E 229 SHEET 4 A1 4 CYS I 503 PRO I 504 -1 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 N MET E 104 O 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 SHEET 1 C 2 ILE I 521 CYS I 522 0 SHEET 2 C 2 CYS I 528 GLY I 529 -1 O GLY I 529 N ILE I 521 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 2.02 SSBOND 4 CYS E 136 CYS E 201 1555 1555 2.03 SSBOND 5 CYS E 168 CYS E 182 1555 1555 2.02 SSBOND 6 CYS E 191 CYS E 220 1555 1555 2.02 SSBOND 7 CYS I 503 CYS I 520 1555 1555 2.01 SSBOND 8 CYS I 510 CYS I 522 1555 1555 2.03 SSBOND 9 CYS I 516 CYS I 528 1555 1555 2.03 LINK OE1 GLU E 70 CA CA E 700 1555 1555 2.48 LINK O ASN E 72 CA CA E 700 1555 1555 2.27 LINK O VAL E 75 CA CA E 700 1555 1555 2.25 LINK OE2 GLU E 80 CA CA E 700 1555 1555 2.49 LINK CA CA E 700 O HOH E 722 1555 1555 2.37 LINK CA CA E 700 O HOH E 860 1555 1555 2.46 SITE 1 AC1 6 GLU E 70 ASN E 72 VAL E 75 GLU E 80 SITE 2 AC1 6 HOH E 722 HOH E 860 CRYST1 59.100 55.700 74.900 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 0.016920 0.000000 0.000000 0.00000 SCALE2 0.000000 0.017953 0.000000 0.00000 SCALE3 0.000000 0.000000 0.013351 0.00000