HEADER HYDROLASE/HYDROLASE INHIBITOR 17-MAR-95 1AHT TITLE CRYSTAL STRUCTURE OF HUMAN ALPHA-THROMBIN COMPLEXED WITH HIRUGEN AND TITLE 2 P-AMIDINOPHENYLPYRUVATE AT 1.6 ANGSTROMS RESOLUTION COMPND MOL_ID: 1; COMPND 2 MOLECULE: ALPHA-THROMBIN (SMALL SUBUNIT); COMPND 3 CHAIN: L; COMPND 4 EC: 3.4.21.5; COMPND 5 MOL_ID: 2; COMPND 6 MOLECULE: ALPHA-THROMBIN (LARGE SUBUNIT); COMPND 7 CHAIN: H; COMPND 8 EC: 3.4.21.5; COMPND 9 MOL_ID: 3; COMPND 10 MOLECULE: HIRUGEN; COMPND 11 CHAIN: I SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 3 ORGANISM_COMMON: HUMAN; SOURCE 4 ORGANISM_TAXID: 9606; SOURCE 5 TISSUE: PLASMA; SOURCE 6 MOL_ID: 2; SOURCE 7 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 8 ORGANISM_COMMON: HUMAN; SOURCE 9 ORGANISM_TAXID: 9606; SOURCE 10 TISSUE: PLASMA; SOURCE 11 MOL_ID: 3 KEYWDS HYDROLASE-HYDROLASE INHIBITOR COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR Z.CHEN REVDAT 7 06-NOV-24 1AHT 1 REMARK REVDAT 6 05-JUN-24 1AHT 1 REMARK LINK REVDAT 5 16-NOV-11 1AHT 1 HETATM REVDAT 4 13-JUL-11 1AHT 1 VERSN REVDAT 3 24-FEB-09 1AHT 1 VERSN REVDAT 2 01-APR-03 1AHT 1 JRNL REVDAT 1 17-MAR-96 1AHT 0 JRNL AUTH Z.CHEN,Y.LI,A.M.MULICHAK,S.D.LEWIS,J.A.SHAFER JRNL TITL CRYSTAL STRUCTURE OF HUMAN ALPHA-THROMBIN COMPLEXED WITH JRNL TITL 2 HIRUGEN AND P-AMIDINOPHENYLPYRUVATE AT 1.6 A RESOLUTION. JRNL REF ARCH.BIOCHEM.BIOPHYS. V. 322 198 1995 JRNL REFN ISSN 0003-9861 JRNL PMID 7574675 JRNL DOI 10.1006/ABBI.1995.1452 REMARK 2 REMARK 2 RESOLUTION. 1.60 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) : 1.60 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : NULL REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL 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 : NULL 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) : 0.187 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 : 2354 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 15 REMARK 3 SOLVENT ATOMS : 231 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) : 0.011 REMARK 3 BOND ANGLES (DEGREES) : 1.900 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 1AHT 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_1000170833. 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 (%): 52.74 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.60 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NULL REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 1 2 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,Y,-Z REMARK 290 3555 X+1/2,Y+1/2,Z 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 0.00000 REMARK 290 SMTRY2 2 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 3 1.000000 0.000000 0.000000 35.62000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 36.19500 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 35.62000 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 36.19500 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 APPLY THE FOLLOWING TO CHAINS: L, H, 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 H 901 LIES ON A SPECIAL POSITION. REMARK 375 HOH H 902 LIES ON A SPECIAL POSITION. REMARK 400 REMARK 400 COMPOUND REMARK 400 THROMBIN IS CLEAVED BETWEEN RESIDUES 15 AND 16. CHAIN REMARK 400 IDENTIFIER *L* IS USED FOR RESIDUES 1H - 15 AND CHAIN REMARK 400 IDENTIFIER *H* IS USED FOR RESIDUES 16 - 247. CHAIN REMARK 400 IDENTIFIER *I* IS USED FOR HIRUGEN. THE HIRUGEN RESIDUE REMARK 400 NUMBERING CORRESPONDS TO THE C-TERMINAL RESIDUES OF HIRUDIN. 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 THR L 1H REMARK 465 PHE L 1G REMARK 465 GLY L 1F REMARK 465 SER L 1E REMARK 465 GLY L 1D REMARK 465 ASP L 14L REMARK 465 GLY L 14M REMARK 465 ARG L 14N REMARK 465 TRP H 147A REMARK 465 THR H 147B REMARK 465 ALA H 147C REMARK 465 ASN H 147D REMARK 465 VAL H 147E REMARK 465 GLY H 147F REMARK 465 LYS H 147G REMARK 465 GLU H 247 REMARK 465 ACE I 52 REMARK 465 ASN I 53 REMARK 465 GLU I 54 REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT REMARK 500 REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT. REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI DISTANCE REMARK 500 OG SER H 195 C3 APA H 401 1.64 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 PHE L 7 -83.58 -128.72 REMARK 500 TYR H 60A 78.20 -153.92 REMARK 500 ASN H 60G 82.81 -157.75 REMARK 500 HIS H 71 -53.17 -131.87 REMARK 500 ASN H 78 -4.17 74.60 REMARK 500 ASP H 189 166.08 178.19 REMARK 500 REMARK 500 REMARK: NULL REMARK 600 REMARK 600 HETEROGEN REMARK 600 REMARK 600 THE C2 ATOM OF P-AMIDINO-PHENYL-PYRUVATE APA401H IS COVALENTLY REMARK 600 CONNECTED TO SER195H SIDE CHAIN ATOM OG, FORMING HEMIKETAL. REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: CAT REMARK 800 EVIDENCE_CODE: AUTHOR REMARK 800 SITE_DESCRIPTION: CATALYTIC SITE REMARK 800 REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE APA H 401 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR CHAIN I OF HIRUGEN DBREF 1AHT L 1H 14N UNP P00734 THRB_HUMAN 328 363 DBREF 1AHT H 16 247 UNP P00734 THRB_HUMAN 364 622 DBREF 1AHT I 55 64 UNP P28501 ITHA_HIRME 55 64 SEQRES 1 L 36 THR PHE GLY SER GLY GLU ALA ASP CYS GLY LEU ARG PRO SEQRES 2 L 36 LEU PHE GLU LYS LYS SER LEU GLU ASP LYS THR GLU ARG SEQRES 3 L 36 GLU LEU LEU GLU SER TYR ILE ASP GLY ARG SEQRES 1 H 259 ILE VAL GLU GLY SER ASP ALA GLU ILE GLY MET SER PRO SEQRES 2 H 259 TRP GLN VAL MET LEU PHE ARG LYS SER PRO GLN GLU LEU SEQRES 3 H 259 LEU CYS GLY ALA SER LEU ILE SER ASP ARG TRP VAL LEU SEQRES 4 H 259 THR ALA ALA HIS CYS LEU LEU TYR PRO PRO TRP ASP LYS SEQRES 5 H 259 ASN PHE THR GLU ASN ASP LEU LEU VAL ARG ILE GLY LYS SEQRES 6 H 259 HIS SER ARG THR ARG TYR GLU ARG ASN ILE GLU LYS ILE SEQRES 7 H 259 SER MET LEU GLU LYS ILE TYR ILE HIS PRO ARG TYR ASN SEQRES 8 H 259 TRP ARG GLU ASN LEU ASP ARG ASP ILE ALA LEU MET LYS SEQRES 9 H 259 LEU LYS LYS PRO VAL ALA PHE SER ASP TYR ILE HIS PRO SEQRES 10 H 259 VAL CYS LEU PRO ASP ARG GLU THR ALA ALA SER LEU LEU SEQRES 11 H 259 GLN ALA GLY TYR LYS GLY ARG VAL THR GLY TRP GLY ASN SEQRES 12 H 259 LEU LYS GLU THR TRP THR ALA ASN VAL GLY LYS GLY GLN SEQRES 13 H 259 PRO SER VAL LEU GLN VAL VAL ASN LEU PRO ILE VAL GLU SEQRES 14 H 259 ARG PRO VAL CYS LYS ASP SER THR ARG ILE ARG ILE THR SEQRES 15 H 259 ASP ASN MET PHE CYS ALA GLY TYR LYS PRO ASP GLU GLY SEQRES 16 H 259 LYS ARG GLY ASP ALA CYS GLU GLY ASP SER GLY GLY PRO SEQRES 17 H 259 PHE VAL MET LYS SER PRO PHE ASN ASN ARG TRP TYR GLN SEQRES 18 H 259 MET GLY ILE VAL SER TRP GLY GLU GLY CYS ASP ARG ASP SEQRES 19 H 259 GLY LYS TYR GLY PHE TYR THR HIS VAL PHE ARG LEU LYS SEQRES 20 H 259 LYS TRP ILE GLN LYS VAL ILE ASP GLN PHE GLY GLU SEQRES 1 I 13 ACE ASN GLU ASP PHE GLU GLU ILE PRO GLU GLU TYS LEU MODRES 1AHT TYS I 63 TYR O-SULFO-L-TYROSINE HET TYS I 63 16 HET APA H 401 15 HETNAM TYS O-SULFO-L-TYROSINE HETNAM APA (2S)-3-(4-CARBAMIMIDOYLPHENYL)-2-HYDROXYPROPANOIC ACID FORMUL 3 TYS C9 H11 N O6 S FORMUL 4 APA C10 H12 N2 O3 FORMUL 5 HOH *231(H2 O) HELIX 1 1 GLU L 8 LYS L 10 5 3 HELIX 2 2 GLU L 14C SER L 14I 1 7 HELIX 3 3 ALA H 56 CYS H 58 5 3 HELIX 4 4 PRO H 60B TRP H 60D 5 3 HELIX 5 5 GLU H 61 ASP H 63 5 3 HELIX 6 6 ARG H 126 LEU H 129C 1 7 HELIX 7 7 ARG H 165 SER H 171 1 7 HELIX 8 8 PHE H 232 PHE H 245 5 14 SHEET 1 A 4 LYS H 81 MET H 84 0 SHEET 2 A 4 LEU H 64 ILE H 68 -1 N ILE H 68 O LYS H 81 SHEET 3 A 4 GLN H 30 ARG H 35 -1 N PHE H 34 O LEU H 65 SHEET 4 A 4 GLU H 39 SER H 45 -1 N ALA H 44 O VAL H 31 SHEET 1 B 3 TRP H 51 THR H 54 0 SHEET 2 B 3 ALA H 104 LEU H 108 -1 N MET H 106 O VAL H 52 SHEET 3 B 3 LEU H 85 ILE H 90 -1 N TYR H 89 O LEU H 105 SHEET 1 C 2 LYS H 135 GLY H 140 0 SHEET 2 C 2 GLN H 156 PRO H 161 -1 N LEU H 160 O GLY H 136 SHEET 1 D 4 MET H 180 ALA H 183 0 SHEET 2 D 4 GLY H 226 HIS H 230 -1 N TYR H 228 O PHE H 181 SHEET 3 D 4 TRP H 207 TRP H 215 -1 N TRP H 215 O PHE H 227 SHEET 4 D 4 PRO H 198 LYS H 202 -1 N MET H 201 O TYR H 208 SSBOND 1 CYS L 1 CYS H 122 1555 1555 2.04 SSBOND 2 CYS H 42 CYS H 58 1555 1555 2.04 SSBOND 3 CYS H 168 CYS H 182 1555 1555 2.03 SSBOND 4 CYS H 191 CYS H 220 1555 1555 2.05 LINK OG SER H 195 C2 APA H 401 1555 1555 1.46 LINK C GLU I 62 N TYS I 63 1555 1555 1.34 LINK C TYS I 63 N LEU I 64 1555 1555 1.33 CISPEP 1 SER H 36A PRO H 37 0 -1.24 SITE 1 CAT 3 HIS H 57 ASP H 102 SER H 195 SITE 1 AC1 15 HIS H 57 ASP H 189 ALA H 190 CYS H 191 SITE 2 AC1 15 GLU H 192 GLY H 193 ASP H 194 SER H 195 SITE 3 AC1 15 TRP H 215 GLY H 219 HOH H 601 HOH H 707 SITE 4 AC1 15 HOH H 757 HOH H 802 HOH H 824 SITE 1 AC2 17 PHE H 34 GLN H 38 LEU H 65 ARG H 67 SITE 2 AC2 17 ARG H 73 THR H 74 ARG H 75 TYR H 76 SITE 3 AC2 17 LYS H 81 ILE H 82 MET H 84 SER H 153 SITE 4 AC2 17 HOH H 639 HOH H 774 HOH I 712 HOH I 762 SITE 5 AC2 17 HOH I 866 CRYST1 71.240 72.390 73.060 90.00 101.01 90.00 C 1 2 1 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 0.014037 0.000000 0.002731 0.00000 SCALE2 0.000000 0.013814 0.000000 0.00000 SCALE3 0.000000 0.000000 0.013944 0.00000