HEADER SERINE PROTEASE 24-AUG-99 1QL8 TITLE FACTOR XA SPECIFIC INHIBITOR IN COMPLEX WITH BOVINE TRYPSIN COMPND MOL_ID: 1; COMPND 2 MOLECULE: TRYPSIN; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: TRYPSINOGEN, BETA-TRYPSIN; COMPND 5 EC: 3.4.21.4 SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: BOS TAURUS; SOURCE 3 ORGANISM_COMMON: BOVINE; SOURCE 4 ORGANISM_TAXID: 9913; SOURCE 5 ORGAN: PANCREAS KEYWDS SERINE PROTEASE, HYDROLASE, SERINE PROTEINASE EXPDTA X-RAY DIFFRACTION AUTHOR M.T.STUBBS REVDAT 4 05-JUL-17 1QL8 1 REMARK REVDAT 3 24-FEB-09 1QL8 1 VERSN REVDAT 2 29-JUN-05 1QL8 1 JRNL REVDAT 1 25-AUG-00 1QL8 0 JRNL AUTH M.T.STUBBS,S.REYDA,F.DULLWEBER,M.MOELLER,G.KLEBE,D.DORSCH, JRNL AUTH 2 W.W.K.R.MEDERSKI,H.WURZIGER JRNL TITL PH-DEPENDENT BINDING MODES OBSERVED IN TRYPSIN CRYSTALS: JRNL TITL 2 LESSONS FOR THE STRUCTURE-BASED DRUG DESIGN JRNL REF CHEMBIOCHEM V. 3 246 2002 JRNL REFN ISSN 1439-4227 JRNL PMID 11921406 JRNL DOI 10.1002/1439-7633(20020301)3:2/3<246::AID-CBIC246>3.0.CO;2-# REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH M.RENATUS,W.BODE,R.HUBER,J.STUERZEBECHER,M.T.STUBBS REMARK 1 TITL STRUCTURAL AND FUNCTIONAL ANALYSES OF BENZAMIDINE-BASED REMARK 1 TITL 2 INHIBITORS IN COMPLEX WITH TRYPSIN: IMPLICATIONS FOR THE REMARK 1 TITL 3 INHIBITION OF FACTOR XA, TPA, AND UROKINASE REMARK 1 REF J.MED.CHEM. V. 41 5445 1998 REMARK 1 REFN ISSN 0022-2623 REMARK 1 PMID 9876114 REMARK 1 DOI 10.1021/JM981068G REMARK 1 REFERENCE 2 REMARK 1 AUTH M.T.STUBBS REMARK 1 TITL STRUCTURAL ASPECTS OF FACTOR XA INHIBITION REMARK 1 REF CURR.PHARM.DES. V. 2 543 1996 REMARK 1 REFN ISSN 1381-6128 REMARK 1 REFERENCE 3 REMARK 1 AUTH M.T.STUBBS,R.HUBER,W.BODE REMARK 1 TITL CRYSTAL STRUCTURES OF FACTOR XA SPECIFIC INHIBITORS IN REMARK 1 TITL 2 COMPLEX WITH TRYPSIN: STRUCTURAL GROUNDS FOR INHIBITION OF REMARK 1 TITL 3 FACTOR XA AND SELECTIVITY AGAINST THROMBIN REMARK 1 REF FEBS LETT. V. 375 103 1995 REMARK 1 REFN ISSN 0014-5793 REMARK 1 PMID 7498454 REMARK 1 DOI 10.1016/0014-5793(95)01190-P REMARK 2 REMARK 2 RESOLUTION. 3.00 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) : 3.00 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 10.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 10000000.000 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0010 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 99.9 REMARK 3 NUMBER OF REFLECTIONS : 6579 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) : 0.190 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 : 20 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 3.00 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 3.05 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 99.90 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 324 REMARK 3 BIN R VALUE (WORKING SET) : 0.2700 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 : 1629 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 40 REMARK 3 SOLVENT ATOMS : 34 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) : 10.0 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) : 0.007 REMARK 3 BOND ANGLES (DEGREES) : 1.610 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 24.90 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.250 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 : PARHCSDX.PRO REMARK 3 PARAMETER FILE 2 : NULL REMARK 3 TOPOLOGY FILE 1 : TOPHCSDX.PRO REMARK 3 TOPOLOGY FILE 2 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1QL8 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 24-AUG-99. REMARK 100 THE DEPOSITION ID IS D_1290002919. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 15-JUL-98 REMARK 200 TEMPERATURE (KELVIN) : 287.0 REMARK 200 PH : 7.00 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 RUH3R REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : NI FILTER REMARK 200 OPTICS : MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : R-AXIS IV REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 7494 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.900 REMARK 200 RESOLUTION RANGE LOW (A) : 100.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.9 REMARK 200 DATA REDUNDANCY : 3.600 REMARK 200 R MERGE (I) : 0.14700 REMARK 200 R SYM (I) : 0.14700 REMARK 200 FOR THE DATA SET : 6.4000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.90 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 3.00 REMARK 200 COMPLETENESS FOR SHELL (%) : 99.6 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : 0.54300 REMARK 200 R SYM FOR SHELL (I) : 0.54300 REMARK 200 FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: OTHER REMARK 200 SOFTWARE USED: X-PLOR 3.1 REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 65.42 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.56 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 0.1M IMIDAZOLE PH7.0, 0.3M AMMONIUM REMARK 280 SULPHATE, 30% PEG8K, PH 7.00 REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: I 21 3 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 5555 Z,X,Y REMARK 290 6555 Z+1/2,-X+1/2,-Y REMARK 290 7555 -Z+1/2,-X,Y+1/2 REMARK 290 8555 -Z,X+1/2,-Y+1/2 REMARK 290 9555 Y,Z,X REMARK 290 10555 -Y,Z+1/2,-X+1/2 REMARK 290 11555 Y+1/2,-Z+1/2,-X REMARK 290 12555 -Y+1/2,-Z,X+1/2 REMARK 290 13555 X+1/2,Y+1/2,Z+1/2 REMARK 290 14555 -X,-Y+1/2,Z REMARK 290 15555 -X+1/2,Y,-Z REMARK 290 16555 X,-Y,-Z+1/2 REMARK 290 17555 Z+1/2,X+1/2,Y+1/2 REMARK 290 18555 Z,-X,-Y+1/2 REMARK 290 19555 -Z,-X+1/2,Y REMARK 290 20555 -Z+1/2,X,-Y REMARK 290 21555 Y+1/2,Z+1/2,X+1/2 REMARK 290 22555 -Y+1/2,Z,-X REMARK 290 23555 Y,-Z,-X+1/2 REMARK 290 24555 -Y,-Z+1/2,X 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 62.90500 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 62.90500 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 62.90500 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 62.90500 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 62.90500 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 62.90500 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 5 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY2 5 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY1 6 0.000000 0.000000 1.000000 62.90500 REMARK 290 SMTRY2 6 -1.000000 0.000000 0.000000 62.90500 REMARK 290 SMTRY3 6 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY1 7 0.000000 0.000000 -1.000000 62.90500 REMARK 290 SMTRY2 7 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 1.000000 0.000000 62.90500 REMARK 290 SMTRY1 8 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY2 8 1.000000 0.000000 0.000000 62.90500 REMARK 290 SMTRY3 8 0.000000 -1.000000 0.000000 62.90500 REMARK 290 SMTRY1 9 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 9 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY3 9 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY1 10 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY2 10 0.000000 0.000000 1.000000 62.90500 REMARK 290 SMTRY3 10 -1.000000 0.000000 0.000000 62.90500 REMARK 290 SMTRY1 11 0.000000 1.000000 0.000000 62.90500 REMARK 290 SMTRY2 11 0.000000 0.000000 -1.000000 62.90500 REMARK 290 SMTRY3 11 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY1 12 0.000000 -1.000000 0.000000 62.90500 REMARK 290 SMTRY2 12 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY3 12 1.000000 0.000000 0.000000 62.90500 REMARK 290 SMTRY1 13 1.000000 0.000000 0.000000 62.90500 REMARK 290 SMTRY2 13 0.000000 1.000000 0.000000 62.90500 REMARK 290 SMTRY3 13 0.000000 0.000000 1.000000 62.90500 REMARK 290 SMTRY1 14 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 14 0.000000 -1.000000 0.000000 62.90500 REMARK 290 SMTRY3 14 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 15 -1.000000 0.000000 0.000000 62.90500 REMARK 290 SMTRY2 15 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 15 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 16 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 16 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 16 0.000000 0.000000 -1.000000 62.90500 REMARK 290 SMTRY1 17 0.000000 0.000000 1.000000 62.90500 REMARK 290 SMTRY2 17 1.000000 0.000000 0.000000 62.90500 REMARK 290 SMTRY3 17 0.000000 1.000000 0.000000 62.90500 REMARK 290 SMTRY1 18 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY2 18 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 18 0.000000 -1.000000 0.000000 62.90500 REMARK 290 SMTRY1 19 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY2 19 -1.000000 0.000000 0.000000 62.90500 REMARK 290 SMTRY3 19 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY1 20 0.000000 0.000000 -1.000000 62.90500 REMARK 290 SMTRY2 20 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 20 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY1 21 0.000000 1.000000 0.000000 62.90500 REMARK 290 SMTRY2 21 0.000000 0.000000 1.000000 62.90500 REMARK 290 SMTRY3 21 1.000000 0.000000 0.000000 62.90500 REMARK 290 SMTRY1 22 0.000000 -1.000000 0.000000 62.90500 REMARK 290 SMTRY2 22 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY3 22 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY1 23 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 23 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY3 23 -1.000000 0.000000 0.000000 62.90500 REMARK 290 SMTRY1 24 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY2 24 0.000000 0.000000 -1.000000 62.90500 REMARK 290 SMTRY3 24 1.000000 0.000000 0.000000 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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC REMARK 350 SOFTWARE USED: PQS 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 400 REMARK 400 COMPOUND REMARK 400 THE 223 AMINO ACIDS OF BOVINE TRYPSIN ARE IDENTIFIED BY THE REMARK 400 RESIDUE NUMBERS OF THE HOMOLOGOUS CHYMOTRYPSINOGEN. REMARK 400 REMARK 400 THESE COORDINATES ARE FOR THE CUBIC CRYSTAL FORM OF THE REMARK 400 ZENECA:BOVINE TRYPSIN COMPLEX AT PH7. THE CRYSTALS DIFFRACT REMARK 400 ONLY TO ABOUT 3A RESOLUTION; THE RESULTING STRUCTURE SHOWS REMARK 400 THAT THE PYRIDINE MOIETY ENTERS THE S1 POCKET, BUT DOES NOT REMARK 400 PENETRATE IT DEEPLY. NO IONIC INTERACTION IS OBSERVED REMARK 400 BETWEEN THE PYRIDINE MOIETY AND ASP189; INSTEAD, THE FORMER REMARK 400 HYDROGEN BONDS WITH THE HYDROXYL FUNCTION OF SER190. REMARK 400 PRESUMABLY, THERE ARE FURTHER SOLVENT MOLECULES BURIED IN REMARK 400 THE POCKET; THERE IS HOWEVER NO DENSITY THAT CAN BE REMARK 400 INTERPRETED RELIABLY FOR THEM. DENSITY FOR THE INHIBITOR REMARK 400 PETERS OUT FOR THE SECOND PIPERIDINYL RING AND THE REMARK 400 CHLORINATED NAPHTHALENE MOIETY; RESIDUAL DENSITY SUGGESTS REMARK 400 THAT THESE PARTS ARE AS MODELLED. REMARK 400 REMARK 400 THE SAME INHIBITOR HAS ALSO BEEN CRYSTALLIZED (A) WITH REMARK 400 BOVINE TRYPSIN AT PH 8 (SEE PDB FILE 1QL7), AND (B) REMARK 400 WITH RAT TRYPSIN MUTANT X99RT (SEE PDB FILE 1QL9). IN REMARK 400 EACH CASE, THE INHIBITOR BINDS IN THE REVERSE DIRECTION TO REMARK 400 THAT SEEN HERE. THIS CORRELATES WITH THE MEASURED PKA OF REMARK 400 7.4 FOR THE PYRIDINYL FUNCTION. THE KI AGAINST BOVINE REMARK 400 TRYPSIN IS ~50UM AT PH5, AND ~10-20UM AT PH 7.8. 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 ALA A 24 121.96 -33.68 REMARK 500 SER A 37 48.22 -158.72 REMARK 500 ASP A 71 -61.02 -120.06 REMARK 500 ASN A 115 -139.90 -160.83 REMARK 500 SER A 147 -68.89 -90.71 REMARK 500 ASP A 189 163.47 178.86 REMARK 500 SER A 214 -66.06 -107.65 REMARK 500 ASN A 223 14.26 51.70 REMARK 500 REMARK 500 REMARK: NULL 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 ZEN A 999 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 480 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU A 70 OE1 REMARK 620 2 ASN A 72 O 81.8 REMARK 620 3 GLU A 77 OE1 104.7 68.4 REMARK 620 4 VAL A 75 O 154.8 79.8 84.4 REMARK 620 5 GLU A 80 OE2 108.6 127.9 59.5 96.3 REMARK 620 N 1 2 3 4 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 480 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 600 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZEN A 999 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1QL7 RELATED DB: PDB REMARK 900 FACTOR XA SPECIFIC INHIBITOR IN COMPLEX WITH BOVINE TRYPSIN REMARK 900 RELATED ID: 1QL9 RELATED DB: PDB REMARK 900 FACTOR XA SPECIFIC INHIBITOR IN COMPLEX WITH RAT TRYPSIN MUTANT REMARK 900 X99RT REMARK 900 RELATED ID: 1MTW RELATED DB: PDB REMARK 900 FACTOR XA SPECIFIC INHIBITOR IN COMPLEX WITH BOVINE TRYPSIN REMARK 900 RELATED ID: 1MTS RELATED DB: PDB REMARK 900 FACTOR XA SPECIFIC INHIBITOR IN COMPLEX WITH BOVINE TRYPSIN REMARK 900 RELATED ID: 1MTU RELATED DB: PDB REMARK 900 FACTOR XA SPECIFIC INHIBITOR IN COMPLEX WITH BOVINE TRYPSIN REMARK 900 RELATED ID: 1MTV RELATED DB: PDB REMARK 900 FACTOR XA SPECIFIC INHIBITOR IN COMPLEX WITH BOVINE TRYPSIN DBREF 1QL8 A 16 245 UNP P00760 TRY1_BOVIN 21 243 SEQRES 1 A 223 ILE VAL GLY GLY TYR THR CYS GLY ALA ASN THR VAL PRO SEQRES 2 A 223 TYR GLN VAL SER LEU ASN SER GLY TYR HIS PHE CYS GLY SEQRES 3 A 223 GLY SER LEU ILE ASN SER GLN TRP VAL VAL SER ALA ALA SEQRES 4 A 223 HIS CYS TYR LYS SER GLY ILE GLN VAL ARG LEU GLY GLU SEQRES 5 A 223 ASP ASN ILE ASN VAL VAL GLU GLY ASN GLU GLN PHE ILE SEQRES 6 A 223 SER ALA SER LYS SER ILE VAL HIS PRO SER TYR ASN SER SEQRES 7 A 223 ASN THR LEU ASN ASN ASP ILE MET LEU ILE LYS LEU LYS SEQRES 8 A 223 SER ALA ALA SER LEU ASN SER ARG VAL ALA SER ILE SER SEQRES 9 A 223 LEU PRO THR SER CYS ALA SER ALA GLY THR GLN CYS LEU SEQRES 10 A 223 ILE SER GLY TRP GLY ASN THR LYS SER SER GLY THR SER SEQRES 11 A 223 TYR PRO ASP VAL LEU LYS CYS LEU LYS ALA PRO ILE LEU SEQRES 12 A 223 SER ASP SER SER CYS LYS SER ALA TYR PRO GLY GLN ILE SEQRES 13 A 223 THR SER ASN MET PHE CYS ALA GLY TYR LEU GLU GLY GLY SEQRES 14 A 223 LYS ASP SER CYS GLN GLY ASP SER GLY GLY PRO VAL VAL SEQRES 15 A 223 CYS SER GLY LYS LEU GLN GLY ILE VAL SER TRP GLY SER SEQRES 16 A 223 GLY CYS ALA GLN LYS ASN LYS PRO GLY VAL TYR THR LYS SEQRES 17 A 223 VAL CYS ASN TYR VAL SER TRP ILE LYS GLN THR ILE ALA SEQRES 18 A 223 SER ASN HET CA A 480 1 HET SO4 A 600 5 HET ZEN A 999 34 HETNAM CA CALCIUM ION HETNAM SO4 SULFATE ION HETNAM ZEN [4-(6-CHLORO-NAPHTHALENE-2-SULFONYL)-PIPERAZIN-1-YL]- HETNAM 2 ZEN (3,4,5,6-TETRAHYDRO-2H-[1,4']BIPYRIDINYL-4-YL)- HETNAM 3 ZEN METHANONE FORMUL 2 CA CA 2+ FORMUL 3 SO4 O4 S 2- FORMUL 4 ZEN C25 H27 CL N4 O3 S FORMUL 5 HOH *34(H2 O) HELIX 1 1 ALA A 55 TYR A 59 5 5 HELIX 2 2 SER A 164 TYR A 172 1 9 HELIX 3 3 TYR A 234 ASN A 245 1 12 SHEET 1 A 7 GLN A 81 SER A 84 0 SHEET 2 A 7 GLN A 64 LEU A 67 -1 N LEU A 67 O GLN A 81 SHEET 3 A 7 GLN A 30 ASN A 34 -1 N ASN A 34 O GLN A 64 SHEET 4 A 7 HIS A 40 ASN A 48 -1 N GLY A 44 O VAL A 31 SHEET 5 A 7 TRP A 51 SER A 54 -1 N VAL A 53 O SER A 45 SHEET 6 A 7 MET A 104 LEU A 108 -1 N ILE A 106 O VAL A 52 SHEET 7 A 7 ALA A 85 VAL A 90 -1 N ILE A 89 O LEU A 105 SHEET 1 B 2 GLN A 135 GLY A 140 0 SHEET 2 B 2 LYS A 156 PRO A 161 -1 N ALA A 160 O CYS A 136 SHEET 1 C 4 MET A 180 ALA A 183 0 SHEET 2 C 4 GLY A 226 LYS A 230 -1 N TYR A 228 O PHE A 181 SHEET 3 C 4 LYS A 204 TRP A 215 -1 N TRP A 215 O VAL A 227 SHEET 4 C 4 PRO A 198 CYS A 201 -1 N CYS A 201 O LYS A 204 SSBOND 1 CYS A 22 CYS A 157 1555 1555 2.02 SSBOND 2 CYS A 42 CYS A 58 1555 1555 2.02 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 2.02 LINK CA CA A 480 OE1 GLU A 70 1555 1555 2.34 LINK CA CA A 480 O ASN A 72 1555 1555 2.47 LINK CA CA A 480 OE1 GLU A 77 1555 1555 2.93 LINK CA CA A 480 O VAL A 75 1555 1555 2.18 LINK CA CA A 480 OE2 GLU A 80 1555 1555 2.73 SITE 1 AC1 5 GLU A 70 ASN A 72 VAL A 75 GLU A 77 SITE 2 AC1 5 GLU A 80 SITE 1 AC2 5 HIS A 57 GLN A 192 GLY A 193 SER A 195 SITE 2 AC2 5 HOH A2034 SITE 1 AC3 7 SER A 190 CYS A 191 GLN A 192 VAL A 213 SITE 2 AC3 7 TRP A 215 GLY A 216 GLY A 219 CRYST1 125.810 125.810 125.810 90.00 90.00 90.00 I 21 3 24 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 0.007948 0.000000 0.000000 0.00000 SCALE2 0.000000 0.007948 0.000000 0.00000 SCALE3 0.000000 0.000000 0.007948 0.00000