HEADER HYDROLASE/HYDROLASE INHIBITOR 15-JUN-00 1F5R TITLE RAT TRYPSINOGEN MUTANT COMPLEXED WITH BOVINE PANCREATIC TRYPSIN TITLE 2 INHIBITOR COMPND MOL_ID: 1; COMPND 2 MOLECULE: TRYPSIN II, ANIONIC; COMPND 3 CHAIN: A; COMPND 4 EC: 3.4.21.4; COMPND 5 ENGINEERED: YES; COMPND 6 MUTATION: YES; COMPND 7 MOL_ID: 2; COMPND 8 MOLECULE: PANCREATIC TRYPSIN INHIBITOR; COMPND 9 CHAIN: I; COMPND 10 SYNONYM: BPTI SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: RATTUS NORVEGICUS; SOURCE 3 ORGANISM_COMMON: NORWAY RAT; SOURCE 4 ORGANISM_TAXID: 10116; SOURCE 5 EXPRESSION_SYSTEM: SACCHAROMYCES CEREVISIAE; SOURCE 6 EXPRESSION_SYSTEM_COMMON: BAKER'S YEAST; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 4932; SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: PYT; SOURCE 10 MOL_ID: 2; SOURCE 11 ORGANISM_SCIENTIFIC: BOS TAURUS; SOURCE 12 ORGANISM_COMMON: CATTLE; SOURCE 13 ORGANISM_TAXID: 9913; SOURCE 14 TISSUE: PANCREAS KEYWDS SERINE PROTEASE, TRYPSIN PRECURSOR, HYDROLASE-HYDROLASE INHIBITOR KEYWDS 2 COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR A.PASTERNAK,A.WHITE,M.CAHOON,D.RINGE,L.HEDSTROM REVDAT 3 03-NOV-21 1F5R 1 REMARK SEQADV LINK REVDAT 2 24-FEB-09 1F5R 1 VERSN REVDAT 1 04-JUL-01 1F5R 0 JRNL AUTH A.PASTERNAK,A.WHITE,C.J.JEFFERY,N.MEDINA,M.CAHOON,D.RINGE, JRNL AUTH 2 L.HEDSTROM JRNL TITL THE ENERGETIC COST OF INDUCED FIT CATALYSIS: CRYSTAL JRNL TITL 2 STRUCTURES OF TRYPSINOGEN MUTANTS WITH ENHANCED ACTIVITY AND JRNL TITL 3 INHIBITOR AFFINITY. JRNL REF PROTEIN SCI. V. 10 1331 2001 JRNL REFN ISSN 0961-8368 JRNL PMID 11420435 JRNL DOI 10.1110/PS.44101 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH A.PASTERNAK,D.RINGE,L.HEDSTROM REMARK 1 TITL COMPARISON OF ANIONIC AND CATIONIC TRYPSINOGENS: THE ANIONIC REMARK 1 TITL 2 ACTIVATION DOMAIN IS MORE FLEXIBLE IN SOLUTION AND DIFFERS REMARK 1 TITL 3 IN ITS MODE OF BPTI BINDING IN THE CRYSTAL STRUCTURE REMARK 1 REF PROTEIN SCI. V. 8 253 1999 REMARK 1 REFN ISSN 0961-8368 REMARK 1 REFERENCE 2 REMARK 1 AUTH A.PASTERNAK,X.LIU,T.-Y.LIN,L.HEDSTROM REMARK 1 TITL ACTIVATING A ZYMOGEN WITHOUT PROTEOLYTIC PROCESSING: REMARK 1 TITL 2 MUTATION OF LYS15 AND ASN194 ACTIVATES TRYPSINOGEN. REMARK 1 REF BIOCHEMISTRY V. 37 16201 1998 REMARK 1 REFN ISSN 0006-2960 REMARK 1 DOI 10.1021/BI980951D REMARK 2 REMARK 2 RESOLUTION. 1.65 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS REMARK 3 AUTHORS : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE- REMARK 3 : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU, REMARK 3 : READ,RICE,SIMONSON,WARREN REMARK 3 REMARK 3 REFINEMENT TARGET : ENGH & HUBER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.65 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 21.69 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) (%) : 93.6 REMARK 3 NUMBER OF REFLECTIONS : 34897 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) : 0.189 REMARK 3 FREE R VALUE : 0.220 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.000 REMARK 3 FREE R VALUE TEST SET COUNT : 3489 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.004 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 6 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 1.65 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.75 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 78.90 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 4328 REMARK 3 BIN R VALUE (WORKING SET) : 0.3130 REMARK 3 BIN FREE R VALUE : 0.3150 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 10.40 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 505 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.014 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2070 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 1 REMARK 3 SOLVENT ATOMS : 270 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 18.20 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 21.80 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 0.26000 REMARK 3 B22 (A**2) : 0.26000 REMARK 3 B33 (A**2) : -0.52000 REMARK 3 B12 (A**2) : -0.93000 REMARK 3 B13 (A**2) : 0.00000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.19 REMARK 3 ESD FROM SIGMAA (A) : 0.17 REMARK 3 LOW RESOLUTION CUTOFF (A) : 5.00 REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.22 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.17 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.005 REMARK 3 BOND ANGLES (DEGREES) : 1.300 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 25.30 REMARK 3 IMPROPER ANGLES (DEGREES) : 0.780 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) : 0.580 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 1.040 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 0.720 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 1.150 ; 2.500 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.34 REMARK 3 BSOL : 48.06 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 : PROTEIN_REP.PARAM REMARK 3 PARAMETER FILE 2 : ION.PARAM REMARK 3 PARAMETER FILE 3 : WATER.PARAM REMARK 3 PARAMETER FILE 4 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN.TOP REMARK 3 TOPOLOGY FILE 2 : ION.TOP REMARK 3 TOPOLOGY FILE 3 : WATER.TOP REMARK 3 TOPOLOGY FILE 4 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1F5R COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 22-JUN-00. REMARK 100 THE DEPOSITION ID IS D_1000011276. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 09-DEC-98 REMARK 200 TEMPERATURE (KELVIN) : 277. REMARK 200 PH : 6.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 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 RU300 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS IV REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 195481 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.650 REMARK 200 RESOLUTION RANGE LOW (A) : 21.690 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 93.6 REMARK 200 DATA REDUNDANCY : 5.450 REMARK 200 R MERGE (I) : 0.05000 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 18.5600 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.65 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.68 REMARK 200 COMPLETENESS FOR SHELL (%) : 80.9 REMARK 200 DATA REDUNDANCY IN SHELL : 1.92 REMARK 200 R MERGE FOR SHELL (I) : 0.24200 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: NULL REMARK 200 SOFTWARE USED: CNS REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 48.63 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.39 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 22% PEG 3380, 300 MM AMMONIUM ACETATE, REMARK 280 100 MM SODIUM ACETATE, , PH 6.5, VAPOR DIFFUSION, HANGING DROP, REMARK 280 TEMPERATURE 298.0K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 32 2 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z+2/3 REMARK 290 3555 -X+Y,-X,Z+1/3 REMARK 290 4555 Y,X,-Z REMARK 290 5555 X-Y,-Y,-Z+1/3 REMARK 290 6555 -X,-X+Y,-Z+2/3 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 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 2 0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 41.41733 REMARK 290 SMTRY1 3 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 3 -0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 20.70867 REMARK 290 SMTRY1 4 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 4 0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 5 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 5 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 20.70867 REMARK 290 SMTRY1 6 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 6 -0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 6 0.000000 0.000000 -1.000000 41.41733 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: 1460 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 11910 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -20.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, 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 A 6 REMARK 465 ALA A 7 REMARK 465 PHE A 8 REMARK 465 PRO A 9 REMARK 465 VAL A 10 REMARK 465 ASP A 11 REMARK 465 ASP A 12 REMARK 465 ASP A 13 REMARK 465 THR A 144 REMARK 465 LEU A 145 REMARK 465 SER A 146 REMARK 465 SER A 147 REMARK 465 GLY A 148 REMARK 465 VAL A 149 REMARK 465 ASN A 150 REMARK 465 ALA I 58 REMARK 465 ILE I 59 REMARK 465 GLY I 60 REMARK 465 PRO I 61 REMARK 465 TRP I 62 REMARK 465 GLU I 63 REMARK 465 ASN I 64 REMARK 465 LEU I 65 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 A 49 0.95 -56.27 REMARK 500 HIS A 71 -66.10 -136.96 REMARK 500 ASP A 153 -71.63 -139.80 REMARK 500 ASP A 153 -86.72 -123.78 REMARK 500 SER A 214 -69.71 -123.51 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 A 800 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU A 70 OE1 REMARK 620 2 ASN A 72 O 93.9 REMARK 620 3 VAL A 75 O 146.8 83.9 REMARK 620 4 GLU A 77 OE1 98.2 91.7 114.9 REMARK 620 5 GLU A 80 OE2 100.7 165.3 82.9 87.9 REMARK 620 6 HOH A 535 O 75.0 116.2 76.4 151.4 66.8 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 A 800 DBREF 1F5R A 7 245 UNP P00763 TRY2_RAT 15 246 DBREF 1F5R I 1 65 UNP P00974 BPT1_BOVIN 36 100 SEQADV 1F5R GLU A 6 UNP P00763 CLONING ARTIFACT SEQADV 1F5R A UNP P00763 ILE 24 DELETION SEQADV 1F5R A UNP P00763 VAL 25 DELETION SEQADV 1F5R LYS A 156 UNP P00763 GLN 159 ENGINEERED MUTATION SEQRES 1 A 231 GLU ALA PHE PRO VAL ASP ASP ASP ASP LYS GLY GLY TYR SEQRES 2 A 231 THR CYS GLN GLU ASN SER VAL PRO TYR GLN VAL SER LEU SEQRES 3 A 231 ASN SER GLY TYR HIS PHE CYS GLY GLY SER LEU ILE ASN SEQRES 4 A 231 ASP GLN TRP VAL VAL SER ALA ALA HIS CYS TYR LYS SER SEQRES 5 A 231 ARG ILE GLN VAL ARG LEU GLY GLU HIS ASN ILE ASN VAL SEQRES 6 A 231 LEU GLU GLY ASN GLU GLN PHE VAL ASN ALA ALA LYS ILE SEQRES 7 A 231 ILE LYS HIS PRO ASN PHE ASP ARG LYS THR LEU ASN ASN SEQRES 8 A 231 ASP ILE MET LEU ILE LYS LEU SER SER PRO VAL LYS LEU SEQRES 9 A 231 ASN ALA ARG VAL ALA THR VAL ALA LEU PRO SER SER CYS SEQRES 10 A 231 ALA PRO ALA GLY THR GLN CYS LEU ILE SER GLY TRP GLY SEQRES 11 A 231 ASN THR LEU SER SER GLY VAL ASN GLU PRO ASP LEU LEU SEQRES 12 A 231 LYS CYS LEU ASP ALA PRO LEU LEU PRO GLN ALA ASP CYS SEQRES 13 A 231 GLU ALA SER TYR PRO GLY LYS ILE THR ASP ASN MET VAL SEQRES 14 A 231 CYS VAL GLY PHE LEU GLU GLY GLY LYS ASP SER CYS GLN SEQRES 15 A 231 GLY ASP SER GLY GLY PRO VAL VAL CYS ASN GLY GLU LEU SEQRES 16 A 231 GLN GLY ILE VAL SER TRP GLY TYR GLY CYS ALA LEU PRO SEQRES 17 A 231 ASP ASN PRO GLY VAL TYR THR LYS VAL CYS ASN TYR VAL SEQRES 18 A 231 ASP TRP ILE GLN ASP THR ILE ALA ALA ASN SEQRES 1 I 65 ARG PRO ASP PHE CYS LEU GLU PRO PRO TYR THR GLY PRO SEQRES 2 I 65 CYS LYS ALA ARG ILE ILE ARG TYR PHE TYR ASN ALA LYS SEQRES 3 I 65 ALA GLY LEU CYS GLN THR PHE VAL TYR GLY GLY CYS ARG SEQRES 4 I 65 ALA LYS ARG ASN ASN PHE LYS SER ALA GLU ASP CYS MET SEQRES 5 I 65 ARG THR CYS GLY GLY ALA ILE GLY PRO TRP GLU ASN LEU HET CA A 800 1 HETNAM CA CALCIUM ION FORMUL 3 CA CA 2+ FORMUL 4 HOH *270(H2 O) HELIX 1 1 ALA A 55 TYR A 59 5 5 HELIX 2 2 PRO A 164 TYR A 172 1 9 HELIX 3 3 TYR A 234 ALA A 244 1 11 HELIX 4 4 PRO I 2 GLU I 7 5 6 HELIX 5 5 SER I 47 GLY I 56 1 10 SHEET 1 A 7 TYR A 20 THR A 21 0 SHEET 2 A 7 LYS A 156 PRO A 161 -1 N CYS A 157 O TYR A 20 SHEET 3 A 7 GLN A 135 GLY A 140 -1 N CYS A 136 O ALA A 160 SHEET 4 A 7 PRO A 198 CYS A 201 -1 O PRO A 198 N SER A 139 SHEET 5 A 7 GLU A 204 TRP A 215 -1 O GLU A 204 N CYS A 201 SHEET 6 A 7 GLY A 226 LYS A 230 -1 N VAL A 227 O TRP A 215 SHEET 7 A 7 MET A 180 VAL A 183 -1 O VAL A 181 N TYR A 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 A 104 LEU A 108 -1 O MET A 104 N SER A 54 SHEET 5 B 7 GLN A 81 LYS A 90 -1 N ALA A 86 O LYS A 107 SHEET 6 B 7 GLN A 64 LEU A 68 -1 N VAL A 66 O VAL A 83 SHEET 7 B 7 GLN A 30 ASN A 34 -1 O SER A 32 N ARG A 67 SHEET 1 C 2 ILE I 18 ASN I 24 0 SHEET 2 C 2 LEU I 29 TYR I 35 -1 O LEU I 29 N ASN I 24 SSBOND 1 CYS A 22 CYS A 157 1555 1555 2.03 SSBOND 2 CYS A 42 CYS A 58 1555 1555 2.03 SSBOND 3 CYS A 128 CYS A 232 1555 1555 2.03 SSBOND 4 CYS A 136 CYS A 201 1555 1555 2.03 SSBOND 5 CYS A 168 CYS A 182 1555 1555 2.03 SSBOND 6 CYS A 191 CYS A 220 1555 1555 2.04 SSBOND 7 CYS I 5 CYS I 55 1555 1555 2.03 SSBOND 8 CYS I 14 CYS I 38 1555 1555 2.03 SSBOND 9 CYS I 30 CYS I 51 1555 1555 2.03 LINK OE1 GLU A 70 CA CA A 800 1555 1555 2.32 LINK O ASN A 72 CA CA A 800 1555 1555 2.51 LINK O VAL A 75 CA CA A 800 1555 1555 2.32 LINK OE1 GLU A 77 CA CA A 800 1555 1555 2.52 LINK OE2 GLU A 80 CA CA A 800 1555 1555 2.42 LINK O HOH A 535 CA CA A 800 1555 1555 2.92 SITE 1 AC1 6 GLU A 70 ASN A 72 VAL A 75 GLU A 77 SITE 2 AC1 6 GLU A 80 HOH A 535 CRYST1 92.568 92.568 62.126 90.00 90.00 120.00 P 32 2 1 6 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 0.010803 0.006237 0.000000 0.00000 SCALE2 0.000000 0.012474 0.000000 0.00000 SCALE3 0.000000 0.000000 0.016096 0.00000