HEADER HYDROLASE/HYDROLASE INHIBITOR 15-MAY-89 4EST TITLE CRYSTAL STRUCTURE OF THE COVALENT COMPLEX FORMED BY A PEPTIDYL ALPHA, TITLE 2 ALPHA-DIFLUORO-BETA-KETO AMIDE WITH PORCINE PANCREATIC ELASTASE AT TITLE 3 1.78-ANGSTROMS RESOLUTION COMPND MOL_ID: 1; COMPND 2 MOLECULE: ELASTASE; COMPND 3 CHAIN: E; COMPND 4 EC: 3.4.21.36; COMPND 5 ENGINEERED: YES; COMPND 6 MOL_ID: 2; COMPND 7 MOLECULE: INHIBITOR ACE-ALA-PRO-VAI-DIFLUORO-N-PHENYLETHYLACETAMIDE; COMPND 8 CHAIN: I; COMPND 9 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SUS SCROFA; SOURCE 3 ORGANISM_COMMON: PIG; SOURCE 4 ORGANISM_TAXID: 9823; SOURCE 5 TISSUE: PANCREAS; SOURCE 6 MOL_ID: 2; SOURCE 7 SYNTHETIC: YES KEYWDS SERINE PROTEINASE, HYDROLASE-HYDROLASE INHIBITOR COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR L.H.TAKAHASHI,R.RADHAKRISHNAN,R.E.ROSENFIELDJUNIOR,E.F.MEYERJUNIOR, AUTHOR 2 D.A.TRAINOR REVDAT 9 09-OCT-24 4EST 1 REMARK REVDAT 8 10-JUL-24 4EST 1 REMARK SEQADV SEQRES LINK REVDAT 7 03-OCT-18 4EST 1 SEQRES REVDAT 6 18-SEP-13 4EST 1 ATOM COMPND FORMUL HET REVDAT 6 2 1 HETATM HETNAM LINK REMARK REVDAT 6 3 1 SITE REVDAT 5 13-JUL-11 4EST 1 VERSN REVDAT 4 25-AUG-09 4EST 1 SOURCE REVDAT 3 24-FEB-09 4EST 1 VERSN REVDAT 2 15-JUL-92 4EST 1 FORMUL REVDAT 1 15-APR-92 4EST 0 JRNL AUTH L.H.TAKAHASHI,R.RADHAKRISHNAN,R.E.ROSENFIELDJUNIOR, JRNL AUTH 2 E.F.MEYERJUNIOR,D.A.TRAINOR JRNL TITL CRYSTAL STRUCTURE OF THE COVALENT COMPLEX FORMED BY A JRNL TITL 2 PEPTIDYL ALPHA,ALPHA-DIFLUORO-BETA-KETO AMIDE WITH PORCINE JRNL TITL 3 PANCREATIC ELASTASE AT 1.78-ANGSTROMS RESOLUTION JRNL REF J.AM.CHEM.SOC. V. 111 3368 1989 JRNL REFN ISSN 0002-7863 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH E.MEYER,G.COLE,R.RADHAKRISHNAN,O.EPP REMARK 1 TITL STRUCTURE OF NATIVE PORCINE PANCREATIC ELASTASE AT 1.65 REMARK 1 TITL 2 ANGSTROMS RESOLUTION REMARK 1 REF ACTA CRYSTALLOGR.,SECT.B V. 44 26 1988 REMARK 1 REFN ISSN 0108-7681 REMARK 2 REMARK 2 RESOLUTION. 1.78 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : EREF REMARK 3 AUTHORS : JACK,LEVITT REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.78 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 7.00 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) : 0.160 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 : 1858 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 6 REMARK 3 SOLVENT ATOMS : 156 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) : 0.012 REMARK 3 BOND ANGLES (DEGREES) : 2.280 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 4EST 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_1000179311. 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: NULL REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 42.25 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.13 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 25.62000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 37.77000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 29.08500 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 37.77000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 25.62000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 29.08500 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 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 400 REMARK 400 COMPOUND REMARK 400 REMARK 400 THE N-ACETYL-L-ALANYL-N-{(1S)-3,3-DIFLUORO-1-(1-METHYLETHYL)-2,4- REMARK 400 DIOXO-4-[(2-PHENYLETHYL)AMINO]BUTYL}-L-PROLINAMIDE IS PEPTIDE-LIKE, REMARK 400 A MEMBER OF INHIBITOR CLASS. REMARK 400 REMARK 400 GROUP: 1 REMARK 400 NAME: N-ACETYL-L-ALANYL-N-{(1S)-3,3-DIFLUORO-1-(1-METHYLETHYL)-2, REMARK 400 4-DIOXO-4-[(2-PHENYLETHYL)AMINO]BUTYL}-L-PROLINAMIDE REMARK 400 CHAIN: I REMARK 400 COMPONENT_1: PEPTIDE LIKE POLYMER REMARK 400 DESCRIPTION: NULL 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 O HOH E 519 O HOH E 554 4466 0.94 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 TYR E 35 CB - CG - CD1 ANGL. DEV. = -3.6 DEGREES REMARK 500 ARG E 48 NE - CZ - NH2 ANGL. DEV. = -3.4 DEGREES REMARK 500 TYR E 101 CB - CG - CD1 ANGL. DEV. = -3.8 DEGREES REMARK 500 ARG E 217A NE - CZ - NH2 ANGL. DEV. = -4.5 DEGREES REMARK 500 TYR E 234 CB - CG - CD2 ANGL. DEV. = -3.8 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 HIS E 71 -57.78 -120.81 REMARK 500 ASN E 115 -156.04 -156.49 REMARK 500 TYR E 171 -118.84 -95.01 REMARK 500 SER E 214 -61.11 -123.02 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 GLN E 34 0.07 SIDE CHAIN REMARK 500 ASN E 76 0.08 SIDE CHAIN REMARK 500 ASN E 77 0.07 SIDE CHAIN REMARK 500 GLN E 81 0.07 SIDE CHAIN REMARK 500 TYR E 93 0.09 SIDE CHAIN REMARK 500 ASN E 133 0.08 SIDE CHAIN REMARK 500 ASN E 178 0.08 SIDE CHAIN REMARK 500 TYR E 234 0.07 SIDE CHAIN REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: MAIN CHAIN PLANARITY REMARK 500 REMARK 500 THE FOLLOWING RESIDUES HAVE A PSEUDO PLANARITY REMARK 500 TORSION ANGLE, C(I) - CA(I) - N(I+1) - O(I), GREATER REMARK 500 10.0 DEGREES. (M=MODEL NUMBER; RES=RESIDUE NAME; REMARK 500 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 500 I=INSERTION CODE). REMARK 500 REMARK 500 M RES CSSEQI ANGLE REMARK 500 ARG E 24 10.17 REMARK 500 ARG E 36 12.09 REMARK 500 CYS E 42 -10.79 REMARK 500 GLY E 69 10.65 REMARK 500 GLN E 75 -10.89 REMARK 500 GLU E 80 -11.06 REMARK 500 GLN E 81 11.59 REMARK 500 VAL E 85 10.48 REMARK 500 SER E 195 10.25 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 302 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU E 70 OE1 REMARK 620 2 ASN E 72 O 79.5 REMARK 620 3 GLN E 75 O 165.0 87.1 REMARK 620 4 ASN E 77 OD1 81.7 86.3 104.4 REMARK 620 5 GLU E 80 OE2 102.0 177.1 91.7 91.5 REMARK 620 6 HOH E 425 O 87.9 98.6 87.4 167.5 84.0 REMARK 620 N 1 2 3 4 5 REMARK 700 REMARK 700 SHEET REMARK 700 THE TWO SEVEN STRANDED SHEETS IN THIS STRUCTURE ARE REALLY REMARK 700 SIX STRANDED BETA BARRELS. THIS IS DENOTED BY THE FIRST REMARK 700 STRAND RECURRING AS THE LAST STRAND. REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: CAT REMARK 800 EVIDENCE_CODE: UNKNOWN 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 SO4 E 301 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA E 302 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR CHAIN I OF INHIBITOR ACE-ALA REMARK 800 -PRO-VAI-DIFLUORO-N-PHENYLETHYLACETAMIDE DBREF 4EST E 16 245 UNP P00772 EL1_PIG 27 266 DBREF 4EST I 1 6 PDB 4EST 4EST 1 6 SEQADV 4EST ASN E 77 UNP P00772 ASP 92 CONFLICT SEQRES 1 E 240 VAL VAL GLY GLY THR GLU ALA GLN ARG ASN SER TRP PRO SEQRES 2 E 240 SER GLN ILE SER LEU GLN TYR ARG SER GLY SER SER TRP SEQRES 3 E 240 ALA HIS THR CYS GLY GLY THR LEU ILE ARG GLN ASN TRP SEQRES 4 E 240 VAL MET THR ALA ALA HIS CYS VAL ASP ARG GLU LEU THR SEQRES 5 E 240 PHE ARG VAL VAL VAL GLY GLU HIS ASN LEU ASN GLN ASN SEQRES 6 E 240 ASN GLY THR GLU GLN TYR VAL GLY VAL GLN LYS ILE VAL SEQRES 7 E 240 VAL HIS PRO TYR TRP ASN THR ASP ASP VAL ALA ALA GLY SEQRES 8 E 240 TYR ASP ILE ALA LEU LEU ARG LEU ALA GLN SER VAL THR SEQRES 9 E 240 LEU ASN SER TYR VAL GLN LEU GLY VAL LEU PRO ARG ALA SEQRES 10 E 240 GLY THR ILE LEU ALA ASN ASN SER PRO CYS TYR ILE THR SEQRES 11 E 240 GLY TRP GLY LEU THR ARG THR ASN GLY GLN LEU ALA GLN SEQRES 12 E 240 THR LEU GLN GLN ALA TYR LEU PRO THR VAL ASP TYR ALA SEQRES 13 E 240 ILE CYS SER SER SER SER TYR TRP GLY SER THR VAL LYS SEQRES 14 E 240 ASN SER MET VAL CYS ALA GLY GLY ASP GLY VAL ARG SER SEQRES 15 E 240 GLY CYS GLN GLY ASP SER GLY GLY PRO LEU HIS CYS LEU SEQRES 16 E 240 VAL ASN GLY GLN TYR ALA VAL HIS GLY VAL THR SER PHE SEQRES 17 E 240 VAL SER ARG LEU GLY CYS ASN VAL THR ARG LYS PRO THR SEQRES 18 E 240 VAL PHE THR ARG VAL SER ALA TYR ILE SER TRP ILE ASN SEQRES 19 E 240 ASN VAL ILE ALA SER ASN SEQRES 1 I 6 ACE ALA PRO VAI FPA PEA MODRES 4EST VAI I 4 VAL (2S)-2-AMINO-3-METHYLBUTANE-1,1-DIOL HET ACE I 1 3 HET VAI I 4 7 HET FPA I 5 5 HET PEA I 6 9 HET SO4 E 301 5 HET CA E 302 1 HETNAM ACE ACETYL GROUP HETNAM VAI (2S)-2-AMINO-3-METHYLBUTANE-1,1-DIOL HETNAM FPA BROMO(DIFLUORO)ACETIC ACID HETNAM PEA 2-PHENYLETHYLAMINE HETNAM SO4 SULFATE ION HETNAM CA CALCIUM ION FORMUL 2 ACE C2 H4 O FORMUL 2 VAI C5 H13 N O2 FORMUL 2 FPA C2 H BR F2 O2 FORMUL 2 PEA C8 H12 N 1+ FORMUL 3 SO4 O4 S 2- FORMUL 4 CA CA 2+ FORMUL 5 HOH *156(H2 O) HELIX 1 HA ASP E 164 SER E 170 1 7 HELIX 2 HB TYR E 234 ASN E 245 1HELIX AT CARBOXYL TERMINUS 12 SHEET 1 A 7 SER E 29 SER E 36A 0 SHEET 2 A 7 SER E 37 ILE E 47 -1 SHEET 3 A 7 ASN E 50 ALA E 56 -1 SHEET 4 A 7 ASP E 102 GLN E 110 -1 SHEET 5 A 7 GLU E 80 HIS E 91 -1 SHEET 6 A 7 PHE E 65 GLY E 69 -1 SHEET 7 A 7 SER E 29 SER E 36A-1 SHEET 1 B 7 ASN E 133 THR E 144 0 SHEET 2 B 7 GLY E 149 VAL E 163 -1 SHEET 3 B 7 SER E 179 VAL E 188 -1 SHEET 4 B 7 ASN E 221 VAL E 231 -1 SHEET 5 B 7 HIS E 210 VAL E 216 -1 SHEET 6 B 7 SER E 195 CYS E 201 -1 SHEET 7 B 7 ASN E 133 THR E 144 -1 SHEET 1 C 3 GLY E 149 ALA E 152 0 SHEET 2 C 3 TRP E 141 LEU E 143 -1 SHEET 3 C 3 GLN E 192 ASP E 194 -1 SSBOND 1 CYS E 42 CYS E 58 1555 1555 2.00 SSBOND 2 CYS E 136 CYS E 201 1555 1555 2.01 SSBOND 3 CYS E 168 CYS E 182 1555 1555 2.02 SSBOND 4 CYS E 191 CYS E 220 1555 1555 2.00 LINK OG SER E 195 C VAI I 4 1555 1555 1.48 LINK C ACE I 1 N ALA I 2 1555 1555 1.34 LINK C PRO I 3 N VAI I 4 1555 1555 1.32 LINK C VAI I 4 C1 FPA I 5 1555 1555 1.51 LINK C2 FPA I 5 N PEA I 6 1555 1555 1.34 LINK OE1 GLU E 70 CA CA E 302 1555 1555 2.43 LINK O ASN E 72 CA CA E 302 1555 1555 2.45 LINK O GLN E 75 CA CA E 302 1555 1555 2.40 LINK OD1 ASN E 77 CA CA E 302 1555 1555 2.55 LINK OE2 GLU E 80 CA CA E 302 1555 1555 2.42 LINK CA CA E 302 O HOH E 425 1555 1555 2.61 SITE 1 CAT 4 HIS E 57 ASP E 102 SER E 195 SER E 214 SITE 1 AC1 6 GLY E 127 ARG E 230 SER E 232 ALA E 233 SITE 2 AC1 6 HOH E 463 HOH E 543 SITE 1 AC2 6 GLU E 70 ASN E 72 GLN E 75 ASN E 77 SITE 2 AC2 6 GLU E 80 HOH E 425 SITE 1 AC3 14 HIS E 40 THR E 41 CYS E 42 HIS E 57 SITE 2 AC3 14 CYS E 191 GLN E 192 GLY E 193 ASP E 194 SITE 3 AC3 14 SER E 195 SER E 214 PHE E 215 VAL E 216 SITE 4 AC3 14 SER E 217 ARG E 217A CRYST1 51.240 58.170 75.540 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 0.019516 0.000000 0.000000 0.00000 SCALE2 0.000000 0.017191 0.000000 0.00000 SCALE3 0.000000 0.000000 0.013238 0.00000