HEADER HYDROLASE 27-APR-99 1QGF TITLE PORCINE PANCREATIC ELASTASE COMPLEXED WITH (3R, 4S)N-PARA- TITLE 2 TOLUENESULPHONYL-3-ETHYL-4-(CARBOXYLIC ACID)PYRROLIDIN-2-ONE COMPND MOL_ID: 1; COMPND 2 MOLECULE: ELASTASE; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: PPE (PORCINE PANCREATIC ELASTASE); COMPND 5 EC: 3.4.21.36 SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SUS SCROFA; SOURCE 3 ORGANISM_COMMON: PIG; SOURCE 4 ORGANISM_TAXID: 9823; SOURCE 5 ORGAN: PANCREAS KEYWDS SERINE PROTEASE, HYDROLASE, SERINE PROTEINASE EXPDTA X-RAY DIFFRACTION AUTHOR R.C.WILMOUTH,S.KASSAMALLY,N.J.WESTWOOD,R.J.SHEPPARD,T.D.W.CLARIDGE, AUTHOR 2 P.A.WRIGHT,G.J.PRITCHARD,C.J.SCHOFIELD REVDAT 5 16-AUG-23 1QGF 1 REMARK REVDAT 4 27-NOV-19 1QGF 1 JRNL REMARK LINK REVDAT 3 24-FEB-09 1QGF 1 VERSN REVDAT 2 06-DEC-00 1QGF 1 HETNAM REVDAT 1 29-DEC-99 1QGF 0 JRNL AUTH R.C.WILMOUTH,S.KASSAMALLY,N.J.WESTWOOD,R.J.SHEPPARD, JRNL AUTH 2 T.D.CLARIDGE,R.T.APLIN,P.A.WRIGHT,G.J.PRITCHARD, JRNL AUTH 3 C.J.SCHOFIELD JRNL TITL MECHANISTIC INSIGHTS INTO THE INHIBITION OF SERINE PROTEASES JRNL TITL 2 BY MONOCYCLIC LACTAMS. JRNL REF BIOCHEMISTRY V. 38 7989 1999 JRNL REFN ISSN 0006-2960 JRNL PMID 10387042 JRNL DOI 10.1021/BI990098Y REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH R.C.WILMOUTH,N.J.WESTWOOD,K.ANDERSON,W.BROWNLEE, REMARK 1 AUTH 2 T.D.CLARIDGE,I.J.CLIFTON,G.J.PRITCHARD,R.T.APLIN, REMARK 1 AUTH 3 C.J.SCHOFIELD REMARK 1 TITL INHIBITION OF ELASTASE BY N-SULFONYLARYL BETA-LACTAMS: REMARK 1 TITL 2 ANATOMY OF A STABLE ACYL-ENZYME COMPLEX. REMARK 1 REF BIOCHEMISTRY V. 37 17506 1998 REMARK 1 REFN ISSN 0006-2960 REMARK 1 PMID 9860865 REMARK 1 DOI 10.1021/BI9816249 REMARK 1 REFERENCE 2 REMARK 1 AUTH R.C.WILMOUTH,I.J.CLIFTON,C.V.ROBINSON,P.L.ROACH,R.T.APLIN, REMARK 1 AUTH 2 N.J.WESTWOOD,J.HAJDU,C.J.SCHOFIELD REMARK 1 TITL STRUCTURE OF A SPECIFIC ACYL-ENZYME COMPLEX FORMED BETWEEN REMARK 1 TITL 2 BETA-CASOMORPHIN-7 AND PORCINE PANCREATIC ELASTASE. REMARK 1 REF NAT.STRUCT.BIOL. V. 4 456 1997 REMARK 1 REFN ISSN 1072-8368 REMARK 1 PMID 9187653 REMARK 1 DOI 10.1038/NSB0697-456 REMARK 1 REFERENCE 3 REMARK 1 AUTH E.MEYER,G.COLE,R.RADHAKRISHNAN,O.EPP REMARK 1 TITL STRUCTURE OF NATIVE PORCINE PANCREATIC ELASTASE AT 1.65 A REMARK 1 TITL 2 RESOLUTIONS. REMARK 1 REF ACTA CRYSTALLOGR.,SECT.B V.T 1) 26 1988 REMARK 1 REFN ISSN 0108-7681 REMARK 1 PMID 3271103 REMARK 1 DOI 10.1107/S0108768187007559 REMARK 2 REMARK 2 RESOLUTION. 1.70 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.70 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 20.80 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 97.6 REMARK 3 NUMBER OF REFLECTIONS : 23759 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 + TEST SET) : NULL REMARK 3 R VALUE (WORKING SET) : 0.183 REMARK 3 FREE R VALUE : 0.210 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 4.000 REMARK 3 FREE R VALUE TEST SET COUNT : 941 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1816 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 27 REMARK 3 SOLVENT ATOMS : 159 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 13.94 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 14.11 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 1.06600 REMARK 3 B22 (A**2) : 0.00000 REMARK 3 B33 (A**2) : 0.00000 REMARK 3 B12 (A**2) : 0.32100 REMARK 3 B13 (A**2) : 0.00000 REMARK 3 B23 (A**2) : -1.08000 REMARK 3 REMARK 3 ESTIMATED OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): 0.090 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.110 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.060 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 1.880 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 DISTANCE RESTRAINTS. RMS SIGMA REMARK 3 BOND LENGTH (A) : 0.015 ; 0.030 REMARK 3 ANGLE DISTANCE (A) : 0.024 ; 0.040 REMARK 3 INTRAPLANAR 1-4 DISTANCE (A) : 0.025 ; 0.050 REMARK 3 H-BOND OR METAL COORDINATION (A) : NULL ; NULL REMARK 3 REMARK 3 PLANE RESTRAINT (A) : 0.024 ; NULL REMARK 3 CHIRAL-CENTER RESTRAINT (A**3) : 0.085 ; 0.150 REMARK 3 REMARK 3 NON-BONDED CONTACT RESTRAINTS. REMARK 3 SINGLE TORSION (A) : 0.169 ; 0.300 REMARK 3 MULTIPLE TORSION (A) : 0.234 ; 0.300 REMARK 3 H-BOND (X...Y) (A) : 0.108 ; 0.300 REMARK 3 H-BOND (X-H...Y) (A) : NULL ; NULL REMARK 3 REMARK 3 CONFORMATIONAL TORSION ANGLE RESTRAINTS. REMARK 3 SPECIFIED (DEGREES) : 0.000 ; 15.000 REMARK 3 PLANAR (DEGREES) : 4.100 ; 15.000 REMARK 3 STAGGERED (DEGREES) : 12.500; 15.000 REMARK 3 TRANSVERSE (DEGREES) : 22.100; 20.000 REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : 1.747 ; 2.000 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 2.303 ; 3.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 2.196 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 3.298 ; 3.000 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: SHELX,CNS,XPLOR ALSO USED REMARK 4 REMARK 4 1QGF COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 29-APR-99. REMARK 100 THE DEPOSITION ID IS D_1000000950. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : MAR-96 REMARK 200 TEMPERATURE (KELVIN) : 100.00 REMARK 200 PH : 5.00 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 RU200 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : NICKEL FILTER REMARK 200 OPTICS : YALE-TYPE MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 23759 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.700 REMARK 200 RESOLUTION RANGE LOW (A) : 20.760 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 97.6 REMARK 200 DATA REDUNDANCY : 3.880 REMARK 200 R MERGE (I) : 0.03600 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 16.8200 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.70 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.74 REMARK 200 COMPLETENESS FOR SHELL (%) : 95.2 REMARK 200 DATA REDUNDANCY IN SHELL : 3.37 REMARK 200 R MERGE FOR SHELL (I) : 0.11100 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 12.12 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: OTHER REMARK 200 SOFTWARE USED: X-PLOR REMARK 200 STARTING MODEL: PDB ENTRY 3EST REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 30.10 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.05 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 25MM SODIUM SULPHATE, 25MM SODIUM REMARK 280 ACETATE, PH 5.0; THEN SOAKED IN 25 MM SODIUM SULPHATE, 50MM REMARK 280 SODIUM ACETATE, 20 MG/ML GAMMA-LACTAM, 10% (V/V) DMSO, PH 5.0 REMARK 280 FOR 24 HOURS, PH 5.00 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 25.11000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 37.24000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 28.81500 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 37.24000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 25.11000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 28.81500 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: MONOMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: A 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 470 REMARK 470 MISSING ATOM REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER; REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 470 I=INSERTION CODE): REMARK 470 M RES CSSEQI ATOMS REMARK 470 ARG A 61 CG CD NE CZ NH1 NH2 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 A 195 O TPX A 280 2.08 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 ARG A 107 CD - NE - CZ ANGL. DEV. = 12.0 DEGREES REMARK 500 ARG A 107 NE - CZ - NH1 ANGL. DEV. = 4.2 DEGREES REMARK 500 ARG A 107 NE - CZ - NH2 ANGL. DEV. = -3.7 DEGREES REMARK 500 ARG A 223 NE - CZ - NH1 ANGL. DEV. = 4.5 DEGREES REMARK 500 ARG A 223 NE - CZ - NH2 ANGL. DEV. = -4.5 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 A 71 -51.58 -131.20 REMARK 500 ASN A 115 -166.05 -164.34 REMARK 500 TYR A 171 -114.31 -96.84 REMARK 500 SER A 214 -51.70 -121.05 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 GLY A 196 10.47 REMARK 500 REMARK 500 REMARK: NULL REMARK 600 REMARK 600 HETEROGEN REMARK 600 REMARK 600 TPX 280: COVALENTLY ATTACHED TO SER-195 VIA AN ESTER REMARK 600 LINKAGE BETWEEN OG OF SER-195 AND C OF THE GAMMA-LACTAM; REMARK 600 THE GAMMA-LACTAM IS RING-OPENED IN THE PROCESS. REMARK 600 THE TOLUENESULPHONYL RING WAS POORLY DEFINED SO THE REMARK 600 POSITION OF THE TOSYL RING WAS MODELLED INTO THE STRUCTURE REMARK 600 USING THE LOCATION OXYGEN ATOMS OF THE SULPHONAMIDE AND REMARK 600 THE ELECTRON DENSITY VISIBLE FOR THE CARBON ATOM IN THE REMARK 600 PHENYL RING NEAREST THE SULPHUR ATOM AS A GUIDE BUT THE REMARK 600 OCCUPANCY OF THE ATOMS WAS SET TO ZERO. REMARK 615 REMARK 615 ZERO OCCUPANCY ATOM REMARK 615 THE FOLLOWING RESIDUES HAVE ATOMS MODELED WITH ZERO REMARK 615 OCCUPANCY. THE LOCATION AND PROPERTIES OF THESE ATOMS REMARK 615 MAY NOT BE RELIABLE. (M=MODEL NUMBER; RES=RESIDUE NAME; REMARK 615 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE): REMARK 615 M RES C SSEQI REMARK 615 TPX A 280 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 260 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU A 70 OE1 REMARK 620 2 GLU A 70 OE2 47.8 REMARK 620 3 ASN A 72 O 87.3 86.6 REMARK 620 4 GLN A 75 O 160.4 146.5 81.8 REMARK 620 5 ASN A 77 OD1 72.0 119.7 87.1 91.1 REMARK 620 6 GLU A 80 OE2 94.7 98.6 174.4 94.7 88.5 REMARK 620 7 HOH A 340 O 123.7 76.2 95.4 73.8 164.1 87.8 REMARK 620 N 1 2 3 4 5 6 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 CA A 260 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 270 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE TPX A 280 REMARK 999 REMARK 999 SEQUENCE REMARK 999 THE SEQUENCE USED FOR THIS STRUCTURE IS THE SAME REMARK 999 AS THAT OF NATIVE PORCINE PANCREATIC ELASTASE (3EST). DBREF 1QGF A 16 245 UNP P00772 ELA1_PIG 27 266 SEQADV 1QGF ASN A 77 UNP P00772 ASP 92 SEE REMARK 999 SEQRES 1 A 240 VAL VAL GLY GLY THR GLU ALA GLN ARG ASN SER TRP PRO SEQRES 2 A 240 SER GLN ILE SER LEU GLN TYR ARG SER GLY SER SER TRP SEQRES 3 A 240 ALA HIS THR CYS GLY GLY THR LEU ILE ARG GLN ASN TRP SEQRES 4 A 240 VAL MET THR ALA ALA HIS CYS VAL ASP ARG GLU LEU THR SEQRES 5 A 240 PHE ARG VAL VAL VAL GLY GLU HIS ASN LEU ASN GLN ASN SEQRES 6 A 240 ASN GLY THR GLU GLN TYR VAL GLY VAL GLN LYS ILE VAL SEQRES 7 A 240 VAL HIS PRO TYR TRP ASN THR ASP ASP VAL ALA ALA GLY SEQRES 8 A 240 TYR ASP ILE ALA LEU LEU ARG LEU ALA GLN SER VAL THR SEQRES 9 A 240 LEU ASN SER TYR VAL GLN LEU GLY VAL LEU PRO ARG ALA SEQRES 10 A 240 GLY THR ILE LEU ALA ASN ASN SER PRO CYS TYR ILE THR SEQRES 11 A 240 GLY TRP GLY LEU THR ARG THR ASN GLY GLN LEU ALA GLN SEQRES 12 A 240 THR LEU GLN GLN ALA TYR LEU PRO THR VAL ASP TYR ALA SEQRES 13 A 240 ILE CYS SER SER SER SER TYR TRP GLY SER THR VAL LYS SEQRES 14 A 240 ASN SER MET VAL CYS ALA GLY GLY ASP GLY VAL ARG SER SEQRES 15 A 240 GLY CYS GLN GLY ASP SER GLY GLY PRO LEU HIS CYS LEU SEQRES 16 A 240 VAL ASN GLY GLN TYR ALA VAL HIS GLY VAL THR SER PHE SEQRES 17 A 240 VAL SER ARG LEU GLY CYS ASN VAL THR ARG LYS PRO THR SEQRES 18 A 240 VAL PHE THR ARG VAL SER ALA TYR ILE SER TRP ILE ASN SEQRES 19 A 240 ASN VAL ILE ALA SER ASN HET CA A 260 1 HET SO4 A 270 5 HET TPX A 280 21 HETNAM CA CALCIUM ION HETNAM SO4 SULFATE ION HETNAM TPX (2S,3S)-3-FORMYL-2-({[(4-METHYLPHENYL) HETNAM 2 TPX SULFONYL]AMINO}METHYL)PENTANOIC ACID FORMUL 2 CA CA 2+ FORMUL 3 SO4 O4 S 2- FORMUL 4 TPX C14 H19 N O5 S FORMUL 5 HOH *159(H2 O) HELIX 1 1 ALA A 56 VAL A 59 5 4 HELIX 2 3 TYR A 165 CYS A 168 1 4 HELIX 3 4 GLY A 173 THR A 175 5 3 HELIX 4 5 VAL A 231 ALA A 233 5 3 HELIX 5 6 ILE A 235 ALA A 243 1 9 SHEET 1 A 7 GLN A 81 GLY A 84 0 SHEET 2 A 7 PHE A 65 VAL A 68 -1 N VAL A 68 O GLN A 81 SHEET 3 A 7 GLN A 30 SER A 36A-1 N GLN A 34 O ARG A 65A SHEET 4 A 7 SER A 37 ARG A 48 -1 N GLY A 44 O ILE A 31 SHEET 5 A 7 TRP A 51 THR A 54 -1 N MET A 53 O THR A 45 SHEET 6 A 7 ALA A 104 LEU A 108 -1 N LEU A 106 O VAL A 52 SHEET 7 A 7 VAL A 85 VAL A 90 -1 N VAL A 89 O LEU A 114 SHEET 1 B 6 GLN A 156 TYR A 159 0 SHEET 2 B 6 CYS A 136 GLY A 140 -1 N GLY A 140 O GLN A 156 SHEET 3 B 6 PRO A 198 VAL A 203 -1 N HIS A 200 O TYR A 137 SHEET 4 B 6 GLN A 206 PHE A 215 -1 N GLY A 211 O LEU A 199 SHEET 5 B 6 THR A 226 ARG A 230 -1 N THR A 229 O VAL A 212 SHEET 6 B 6 MET A 180 ALA A 183 -1 N ALA A 183 O THR A 226 SSBOND 1 CYS A 42 CYS A 58 1555 1555 2.05 SSBOND 2 CYS A 136 CYS A 201 1555 1555 2.04 SSBOND 3 CYS A 168 CYS A 182 1555 1555 2.06 SSBOND 4 CYS A 191 CYS A 220 1555 1555 2.02 LINK OG SER A 195 C TPX A 280 1555 1555 1.20 LINK OE1 GLU A 70 CA CA A 260 1555 1555 2.26 LINK OE2 GLU A 70 CA CA A 260 1555 1555 2.83 LINK O ASN A 72 CA CA A 260 1555 1555 2.32 LINK O GLN A 75 CA CA A 260 1555 1555 2.35 LINK OD1 ASN A 77 CA CA A 260 1555 1555 2.32 LINK OE2 GLU A 80 CA CA A 260 1555 1555 2.35 LINK CA CA A 260 O HOH A 340 1555 1555 2.44 SITE 1 CAT 3 HIS A 57 ASP A 102 SER A 195 SITE 1 AC1 6 GLU A 70 ASN A 72 GLN A 75 ASN A 77 SITE 2 AC1 6 GLU A 80 HOH A 340 SITE 1 AC2 8 GLY A 127 ARG A 145 ARG A 230 SER A 232 SITE 2 AC2 8 ALA A 233 HOH A 354 HOH A 355 HOH A 396 SITE 1 AC3 10 CYS A 42 CYS A 191 GLN A 192 GLY A 193 SITE 2 AC3 10 ASP A 194 SER A 195 SER A 214 PHE A 215 SITE 3 AC3 10 VAL A 216 HOH A 391 CRYST1 50.220 57.630 74.480 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 0.019912 0.000000 0.000000 0.00000 SCALE2 0.000000 0.017352 0.000000 0.00000 SCALE3 0.000000 0.000000 0.013426 0.00000