PDB Short entry for 1AN1 HEADER COMPLEX (SERINE PROTEASE/INHIBITOR) 26-JUN-97 1AN1 TITLE LEECH-DERIVED TRYPTASE INHIBITOR/TRYPSIN COMPLEX COMPND MOL_ID: 1; COMPND 2 MOLECULE: TRYPSIN; COMPND 3 CHAIN: E; COMPND 4 SYNONYM: LDTI; COMPND 5 ENGINEERED: YES; COMPND 6 MOL_ID: 2; COMPND 7 MOLECULE: TRYPTASE INHIBITOR; COMPND 8 CHAIN: I; COMPND 9 EC: 3.4.21.4; COMPND 10 ENGINEERED: YES; COMPND 11 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SUS SCROFA; SOURCE 3 ORGANISM_COMMON: PIG; SOURCE 4 ORGANISM_TAXID: 9823; SOURCE 5 ORGAN: PANCREAS; SOURCE 6 MOL_ID: 2; SOURCE 7 ORGANISM_SCIENTIFIC: HIRUDO MEDICINALIS; SOURCE 8 ORGANISM_COMMON: MEDICINAL LEECH; SOURCE 9 ORGANISM_TAXID: 6421; SOURCE 10 ORGAN: SALIVARY GLANDS; SOURCE 11 EXPRESSION_SYSTEM: SACCHAROMYCES CEREVISIAE; SOURCE 12 EXPRESSION_SYSTEM_COMMON: BAKER'S YEAST; SOURCE 13 EXPRESSION_SYSTEM_TAXID: 4932; SOURCE 14 EXPRESSION_SYSTEM_STRAIN: H449; SOURCE 15 EXPRESSION_SYSTEM_VARIANT: TR1376, TR1417; SOURCE 16 EXPRESSION_SYSTEM_PLASMID: PDP34 KEYWDS SERINE PROTEINASE INHIBITOR, TRYPTASE INHIBITION, NON-CLASSICAL KEYWDS 2 KAZAL-TYPE INHIBITOR, COMPLEX (SERINE PROTEASE-INHIBITOR), COMPLEX KEYWDS 3 (SERINE PROTEASE-INHIBITOR) COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR J.P.PRIESTLE,S.DI MARCO REVDAT 3 02-AUG-23 1AN1 1 REMARK SEQADV LINK REVDAT 2 24-FEB-09 1AN1 1 VERSN REVDAT 1 01-JUL-98 1AN1 0 JRNL AUTH S.DI MARCO,J.P.PRIESTLE JRNL TITL STRUCTURE OF THE COMPLEX OF LEECH-DERIVED TRYPTASE INHIBITOR JRNL TITL 2 (LDTI) WITH TRYPSIN AND MODELING OF THE LDTI-TRYPTASE JRNL TITL 3 SYSTEM. JRNL REF STRUCTURE V. 5 1465 1997 JRNL REFN ISSN 0969-2126 JRNL PMID 9384562 JRNL DOI 10.1016/S0969-2126(97)00296-7 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH G.POHLIG,G.FENDRICH,R.KNECHT,B.EDER,G.PIECHOTTKA, REMARK 1 AUTH 2 C.P.SOMMERHOFF,J.HEIM REMARK 1 TITL PURIFICATION, CHARACTERIZATION AND BIOLOGICAL EVALUATION OF REMARK 1 TITL 2 RECOMBINANT LEECH-DERIVED TRYPTASE INHIBITOR (RLDTI) REMARK 1 TITL 3 EXPRESSED AT HIGH LEVEL IN THE YEAST SACCHAROMYCES REMARK 1 TITL 4 CEREVISIAE REMARK 1 REF EUR.J.BIOCHEM. V. 241 619 1996 REMARK 1 REFN ISSN 0014-2956 REMARK 1 REFERENCE 2 REMARK 1 AUTH C.P.SOMMERHOFF,C.SOLLNER,R.MENTELE,G.P.PIECHOTTKA, REMARK 1 AUTH 2 E.A.AUERSWALD,H.FRITZ REMARK 1 TITL A KAZAL-TYPE INHIBITOR OF HUMAN MAST CELL TRYPTASE: REMARK 1 TITL 2 ISOLATION FROM THE MEDICAL LEECH HIRUDO MEDICINALIS, REMARK 1 TITL 3 CHARACTERIZATION, AND SEQUENCE ANALYSIS REMARK 1 REF BIOL.CHEM.HOPPE-SEYLER V. 375 685 1994 REMARK 1 REFN ISSN 0177-3593 REMARK 2 REMARK 2 RESOLUTION. 2.03 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) : 2.03 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 6.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 1000000.000 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 94.3 REMARK 3 NUMBER OF REFLECTIONS : 16406 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) : 0.170 REMARK 3 FREE R VALUE : 0.228 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.500 REMARK 3 FREE R VALUE TEST SET COUNT : 909 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.008 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 12 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.03 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.09 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 81.60 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 15497 REMARK 3 BIN R VALUE (WORKING SET) : 0.2670 REMARK 3 BIN FREE R VALUE : 0.2980 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 4.80 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 68 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.036 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1923 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 1 REMARK 3 SOLVENT ATOMS : 138 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 26.50 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) : 1.978 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 24.75 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.481 REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : RESTRAINED 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 : PARHCSDX.PRO REMARK 3 PARAMETER FILE 2 : PARAM19.SOL REMARK 3 PARAMETER FILE 3 : PARAM19X.SUP REMARK 3 PARAMETER FILE 4 : NULL REMARK 3 PARAMETER FILE 5 : NULL REMARK 3 TOPOLOGY FILE 1 : TOPHCSXD.PRO REMARK 3 TOPOLOGY FILE 2 : TOPH19.ASD REMARK 3 TOPOLOGY FILE 3 : TOPH19.WAT REMARK 3 TOPOLOGY FILE 4 : TOPH19.CAL REMARK 3 TOPOLOGY FILE 5 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: RESIDUE 115 WAS REFINED AS D-ASPARTIC REMARK 3 ACID. WATER MOLECULE 98 IS LOCATED ON A CRYSTALLOGRAPHIC 2-FOLD REMARK 3 AXIS AND THEREFORE HAS AN OCCUPANCY OF 0.5 REMARK 4 REMARK 4 1AN1 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_1000171019. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 29-JAN-97 REMARK 200 TEMPERATURE (KELVIN) : 294 REMARK 200 PH : 8.5 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 : ENRAF-NONIUS FR591 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : GRAPHITE(002) REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MAR SCANNER 300 MM PLATE REMARK 200 INTENSITY-INTEGRATION SOFTWARE : MARSCALE, XDS REMARK 200 DATA SCALING SOFTWARE : XDS, MARSCALE REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 17213 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.030 REMARK 200 RESOLUTION RANGE LOW (A) : 29.140 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 94.3 REMARK 200 DATA REDUNDANCY : 8.730 REMARK 200 R MERGE (I) : 0.11540 REMARK 200 R SYM (I) : 0.11540 REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 27.8200 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.03 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.10 REMARK 200 COMPLETENESS FOR SHELL (%) : 79.4 REMARK 200 DATA REDUNDANCY IN SHELL : 6.20 REMARK 200 R MERGE FOR SHELL (I) : 0.48460 REMARK 200 R SYM FOR SHELL (I) : 0.48460 REMARK 200 <I/SIGMA(I)> FOR SHELL : 4.700 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: AMORE REMARK 200 STARTING MODEL: PORCINE PANCREATIC BETA-TRYPSIN (PDB ENTRY 1EPT) REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 47.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.30 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 30% V/V 2-PROPANOL, 0.2M AMMONIUM REMARK 280 ACETATE, 0.1M TRIS-HCL, PH 8.5 ROOM TEMPERATURE 27 MONTHS FOR REMARK 280 GROWTH. REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 43 21 2 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,-Y,Z+1/2 REMARK 290 3555 -Y+1/2,X+1/2,Z+3/4 REMARK 290 4555 Y+1/2,-X+1/2,Z+1/4 REMARK 290 5555 -X+1/2,Y+1/2,-Z+3/4 REMARK 290 6555 X+1/2,-Y+1/2,-Z+1/4 REMARK 290 7555 Y,X,-Z REMARK 290 8555 -Y,-X,-Z+1/2 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 0.00000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 65.43000 REMARK 290 SMTRY1 3 0.000000 -1.000000 0.000000 31.85000 REMARK 290 SMTRY2 3 1.000000 0.000000 0.000000 31.85000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 98.14500 REMARK 290 SMTRY1 4 0.000000 1.000000 0.000000 31.85000 REMARK 290 SMTRY2 4 -1.000000 0.000000 0.000000 31.85000 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 32.71500 REMARK 290 SMTRY1 5 -1.000000 0.000000 0.000000 31.85000 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 31.85000 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 98.14500 REMARK 290 SMTRY1 6 1.000000 0.000000 0.000000 31.85000 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 31.85000 REMARK 290 SMTRY3 6 0.000000 0.000000 -1.000000 32.71500 REMARK 290 SMTRY1 7 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 7 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 8 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY2 8 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 8 0.000000 0.000000 -1.000000 65.43000 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: 1440 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 10920 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -22.0 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 375 REMARK 375 SPECIAL POSITION REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL REMARK 375 POSITIONS. REMARK 375 REMARK 375 ATOM RES CSSEQI REMARK 375 HOH E 393 LIES ON A SPECIAL POSITION. 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 LYS I 1 REMARK 465 THR I 42 REMARK 465 GLY I 43 REMARK 465 ILE I 44 REMARK 465 LEU I 45 REMARK 465 ASN I 46 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 E 37 56.53 -151.15 REMARK 500 HIS E 71 -62.57 -123.65 REMARK 500 DAS E 115 -166.16 -168.48 REMARK 500 SER E 214 -68.76 -126.51 REMARK 500 LYS I 8 37.79 -90.96 REMARK 500 LYS I 11 73.01 -150.37 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 300 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 157.2 85.3 REMARK 620 4 GLU E 77 OE1 100.6 83.6 100.3 REMARK 620 5 GLU E 80 OE2 98.4 167.4 92.3 84.7 REMARK 620 6 HOH E 355 O 71.3 86.5 86.5 167.4 105.7 REMARK 620 N 1 2 3 4 5 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: P1 REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: BINDING LOOP OF LDTI. LYS I 8 IS THE PRIMARY REMARK 800 SPECIFICITY. REMARK 800 REMARK 800 SITE_IDENTIFIER: CA REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: CALCIUM+2 ION BINDING SITE IN TRYPSIN. BOUND REMARK 800 THROUGH SIDE CHAINS OF GLUE 70, GLU E 77, GLU E 80, PEPTIDE REMARK 800 CARBONYLS OF ASN E 72 AND VAL E 75 AND HOH 75. REMARK 800 REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA E 300 DBREF 1AN1 E 16 245 UNP P00761 TRYP_PIG 9 231 DBREF 1AN1 I 1 46 UNP P80424 LDTI_HIRME 1 46 SEQADV 1AN1 DAS E 115 UNP P00761 ASN 105 MODIFIED RESIDUE SEQRES 1 E 223 ILE VAL GLY GLY TYR THR CYS ALA ALA ASN SER ILE PRO SEQRES 2 E 223 TYR GLN VAL SER LEU ASN SER GLY SER 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 ARG ILE GLN VAL ARG LEU GLY GLU SEQRES 5 E 223 HIS ASN ILE ASP VAL LEU GLU GLY ASN GLU GLN PHE ILE SEQRES 6 E 223 ASN ALA ALA LYS ILE ILE THR HIS PRO ASN PHE ASN GLY SEQRES 7 E 223 ASN THR LEU ASP ASN ASP ILE MET LEU ILE LYS LEU SER SEQRES 8 E 223 SER PRO ALA THR LEU DAS SER ARG VAL ALA THR VAL SER SEQRES 9 E 223 LEU PRO ARG SER CYS ALA ALA ALA GLY THR GLU CYS LEU SEQRES 10 E 223 ILE SER GLY TRP GLY ASN THR LYS SER SER GLY SER SER SEQRES 11 E 223 TYR PRO SER LEU LEU GLN CYS LEU LYS ALA PRO VAL LEU SEQRES 12 E 223 SER ASP SER SER CYS LYS SER SER TYR PRO GLY GLN ILE SEQRES 13 E 223 THR GLY ASN MET ILE CYS VAL GLY PHE 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 ASN GLY GLN LEU GLN GLY ILE VAL SER TRP GLY TYR 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 ASN TRP ILE GLN GLN THR ILE ALA SEQRES 18 E 223 ALA ASN SEQRES 1 I 46 LYS LYS VAL CYS ALA CYS PRO LYS ILE LEU LYS PRO VAL SEQRES 2 I 46 CYS GLY SER ASP GLY ARG THR TYR ALA ASN SER CYS ILE SEQRES 3 I 46 ALA ARG CYS ASN GLY VAL SER ILE LYS SER GLU GLY SER SEQRES 4 I 46 CYS PRO THR GLY ILE LEU ASN MODRES 1AN1 DAS E 115 ASP D-ASPARTIC ACID HET DAS E 115 8 HET CA E 300 1 HETNAM DAS D-ASPARTIC ACID HETNAM CA CALCIUM ION FORMUL 1 DAS C4 H7 N O4 FORMUL 3 CA CA 2+ FORMUL 4 HOH *138(H2 O) HELIX 1 1 ALA E 56 CYS E 58 5 3 HELIX 2 2 ASP E 165 SER E 171 1 7 HELIX 3 3 VAL E 231 ALA E 243 5 13 HELIX 4 4 SER I 24 ASN I 30 1 7 SHEET 1 A 7 GLN E 81 ASN 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 THR E 90 -1 N ILE E 89 O LEU E 105 SHEET 1 B 2 GLU E 135 GLY E 140 0 SHEET 2 B 2 GLN E 156 PRO E 161 -1 N ALA E 160 O CYS E 136 SHEET 1 C 4 MET E 180 VAL E 183 0 SHEET 2 C 4 GLY E 226 LYS E 230 -1 N TYR E 228 O ILE E 181 SHEET 3 C 4 GLN 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 GLN E 204 SHEET 1 D 2 VAL I 13 GLY I 15 0 SHEET 2 D 2 ILE I 34 GLU I 37 -1 N SER I 36 O CYS I 14 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 2.02 SSBOND 4 CYS E 136 CYS E 201 1555 1555 2.03 SSBOND 5 CYS E 168 CYS E 182 1555 1555 2.04 SSBOND 6 CYS E 191 CYS E 220 1555 1555 2.04 SSBOND 7 CYS I 4 CYS I 29 1555 1555 2.03 SSBOND 8 CYS I 6 CYS I 25 1555 1555 2.01 SSBOND 9 CYS I 14 CYS I 40 1555 1555 2.03 LINK C LEU E 114 N DAS E 115 1555 1555 1.33 LINK C DAS E 115 N SER E 116 1555 1555 1.33 LINK OE1 GLU E 70 CA CA E 300 1555 1555 2.40 LINK O ASN E 72 CA CA E 300 1555 1555 2.34 LINK O VAL E 75 CA CA E 300 1555 1555 2.22 LINK OE1 GLU E 77 CA CA E 300 1555 1555 2.50 LINK OE2 GLU E 80 CA CA E 300 1555 1555 2.44 LINK CA CA E 300 O HOH E 355 1555 1555 2.33 SITE 1 P1 1 LYS I 8 SITE 1 CA 1 CA E 300 SITE 1 AC1 6 GLU E 70 ASN E 72 VAL E 75 GLU E 77 SITE 2 AC1 6 GLU E 80 HOH E 355 CRYST1 63.700 63.700 130.860 90.00 90.00 90.00 P 43 21 2 8 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 0.015699 0.000000 0.000000 0.00000 SCALE2 0.000000 0.015699 0.000000 0.00000 SCALE3 0.000000 0.000000 0.007642 0.00000