HEADER HYDROLASE INHIBITOR 21-MAY-02 1LU0 TITLE ATOMIC RESOLUTION STRUCTURE OF SQUASH TRYPSIN INHIBITOR: UNEXPECTED TITLE 2 METAL COORDINATION COMPND MOL_ID: 1; COMPND 2 MOLECULE: TRYPSIN INHIBITOR I; COMPND 3 CHAIN: A, B; COMPND 4 SYNONYM: CMTI-I; COMPND 5 ENGINEERED: YES; COMPND 6 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: CUCURBITA MAXIMA; SOURCE 3 ORGANISM_COMMON: WINTER SQUASH; SOURCE 4 ORGANISM_TAXID: 3661; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: BL21(DE3)-PLYS(S); SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: PAED4 KEYWDS SERINE PROTEASE INHIBITOR, METAL COORDINATION, HYDROLASE INHIBITOR EXPDTA X-RAY DIFFRACTION AUTHOR R.THAIMATTAM,E.TYKARSKA,A.BIERZYNSKI,G.M.SHELDRICK,M.JASKOLSKI REVDAT 5 27-OCT-21 1LU0 1 REMARK SEQADV LINK REVDAT 4 20-JAN-16 1LU0 1 LINK REVDAT 3 13-JUL-11 1LU0 1 VERSN REVDAT 2 24-FEB-09 1LU0 1 VERSN REVDAT 1 28-AUG-02 1LU0 0 JRNL AUTH R.THAIMATTAM,E.TYKARSKA,A.BIERZYNSKI,G.M.SHELDRICK, JRNL AUTH 2 M.JASKOLSKI JRNL TITL ATOMIC RESOLUTION STRUCTURE OF SQUASH TRYPSIN INHIBITOR: JRNL TITL 2 UNEXPECTED METAL COORDINATION. JRNL REF ACTA CRYSTALLOGR.,SECT.D V. 58 1448 2002 JRNL REFN ISSN 0907-4449 JRNL PMID 12198301 JRNL DOI 10.1107/S0907444902011769 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH W.BODE,H.J.GREYLING,R.HUBER,J.OTLEWSKI,T.WILUSZ REMARK 1 TITL THE REFINED 2.0 A X-RAY CRYSTAL STRUCTURE OF THE COMPLEX REMARK 1 TITL 2 FORMED BETWEEN BOVINE BETA-TRYPSIN AND CMTI-I, A TRYPSIN REMARK 1 TITL 3 INHIBITOR FROM SQUASH SEEDS (CUCURBITA MAXIMA). TOPOLOGICAL REMARK 1 TITL 4 SIMILARITY OF THE SQUASH SEED INHIBITORS WITH THE REMARK 1 TITL 5 CARBOXYPEPTIDASE A INHIBITOR FROM POTATOES REMARK 1 REF FEBS LETT. V. 242 285 1989 REMARK 1 REFN ISSN 0014-5793 REMARK 1 DOI 10.1016/0014-5793(89)80486-7 REMARK 1 REFERENCE 2 REMARK 1 AUTH R.HELLAND,G.I.BERGLUND,J.OTLEWSKI,W.APOSTOLUK,O.A.ANDERSEN, REMARK 1 AUTH 2 N.P.WILLASSEN,A.O.SMALAS REMARK 1 TITL HIGH-RESOLUTION STRUCTURES OF THREE NEW REMARK 1 TITL 2 TRYPSIN-SQUASH-INHIBITOR COMPLEXES: A DETAILED COMPARISON REMARK 1 TITL 3 WITH OTHER TRYPSINS AND THEIR COMPLEXES REMARK 1 REF ACTA CRYSTALLOGR.,SECT.D V. 55 139 1999 REMARK 1 REFN ISSN 0907-4449 REMARK 1 DOI 10.1107/S0108768198010805 REMARK 1 REFERENCE 3 REMARK 1 AUTH I.ZHUKOV,L.JAROSZEWSKI,A.BIERZYNSKI REMARK 1 TITL CONSERVATIVE MUTATION MET8 --> LEU EFFECTS FOLDING AND REMARK 1 TITL 2 STABILITY OF SQUASH TRYPSIN INHIBITOR CMTI-I REMARK 1 REF PROTEIN SCI. V. 9 273 2000 REMARK 1 REFN ISSN 0961-8368 REMARK 1 REFERENCE 4 REMARK 1 AUTH M.NILGES,J.HABAZETTL,A.T.BRUNGER,T.A.HOLAK REMARK 1 TITL RELAXATION MATRIX REFINEMENT OF THE SOLUTION STRUCTURE OF REMARK 1 TITL 2 SQUASH TRYPSIN INHIBITOR REMARK 1 REF J.MOL.BIOL. V. 219 499 1991 REMARK 1 REFN ISSN 0022-2836 REMARK 2 REMARK 2 RESOLUTION. 1.03 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : SHELXL-97 REMARK 3 AUTHORS : G.M.SHELDRICK REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.03 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 10.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 99.1 REMARK 3 CROSS-VALIDATION METHOD : FREE R REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT (NO CUTOFF). REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : 0.121 REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : 0.120 REMARK 3 FREE R VALUE (NO CUTOFF) : 0.145 REMARK 3 FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT (NO CUTOFF) : 1345 REMARK 3 TOTAL NUMBER OF REFLECTIONS (NO CUTOFF) : 26990 REMARK 3 REMARK 3 FIT/AGREEMENT OF MODEL FOR DATA WITH F>4SIG(F). REMARK 3 R VALUE (WORKING + TEST SET, F>4SIG(F)) : 0.115 REMARK 3 R VALUE (WORKING SET, F>4SIG(F)) : 0.114 REMARK 3 FREE R VALUE (F>4SIG(F)) : 0.140 REMARK 3 FREE R VALUE TEST SET SIZE (%, F>4SIG(F)) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT (F>4SIG(F)) : 1139 REMARK 3 TOTAL NUMBER OF REFLECTIONS (F>4SIG(F)) : 22676 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 444 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 24 REMARK 3 SOLVENT ATOMS : 76 REMARK 3 REMARK 3 MODEL REFINEMENT. REMARK 3 OCCUPANCY SUM OF NON-HYDROGEN ATOMS : 517.49 REMARK 3 OCCUPANCY SUM OF HYDROGEN ATOMS : 432.00 REMARK 3 NUMBER OF DISCRETELY DISORDERED RESIDUES : 5 REMARK 3 NUMBER OF LEAST-SQUARES PARAMETERS : 5179 REMARK 3 NUMBER OF RESTRAINTS : 6000 REMARK 3 REMARK 3 RMS DEVIATIONS FROM RESTRAINT TARGET VALUES. REMARK 3 BOND LENGTHS (A) : 0.025 REMARK 3 ANGLE DISTANCES (A) : 0.039 REMARK 3 SIMILAR DISTANCES (NO TARGET VALUES) (A) : 0.000 REMARK 3 DISTANCES FROM RESTRAINT PLANES (A) : 0.031 REMARK 3 ZERO CHIRAL VOLUMES (A**3) : 0.106 REMARK 3 NON-ZERO CHIRAL VOLUMES (A**3) : 0.130 REMARK 3 ANTI-BUMPING DISTANCE RESTRAINTS (A) : 0.000 REMARK 3 RIGID-BOND ADP COMPONENTS (A**2) : 0.006 REMARK 3 SIMILAR ADP COMPONENTS (A**2) : 0.056 REMARK 3 APPROXIMATELY ISOTROPIC ADPS (A**2) : 0.091 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED: MOEWS & KRETSINGER, J.MOL.BIOL.91(1973)201-228 REMARK 3 REMARK 3 STEREOCHEMISTRY TARGET VALUES : ENGH AND HUBER REMARK 3 SPECIAL CASE: CSD REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: REMARK 3 ANISOTROPIC REFINEMENT WITHOUT STEREOCHEMICAL RESTRAINTS ON MAIN REMARK 3 CHAIN ATOMS WITH LOW BEQ (<15 A**2). IN BOTH MOLECULES (A AND B) REMARK 3 THERE IS A SALT BRIDGE BETWEEN THE C-TERMINUS AND THE ARG1 SIDE REMARK 3 CHAIN. THE ARG5 SIDE CHAIN IN MOLECULE A IS MODELED IN TWO REMARK 3 CONFORMATIONS. THE VAL21 AND TYR27 SIDE CHAINS IN BOTH MOLECULES REMARK 3 ARE MODELED IN DOUBLE CONFORMATION. HIS25 HAS DIFFERENT REMARK 3 PROTONATION AND CONFORMATION IN THE TWO MOLECULES. THE ZINC AND REMARK 3 SULFATE IONS LIE ON A COMMON TWO FOLD AXIS. ONE MPD AND TWO REMARK 3 GLYCEROL MOLECULES ARE MODELED IN THE SOLVENT REGION. BLOCKED FULL- REMARK 3 MATIX LEAST-SQUARES CALCULATIONS WERE PERFORMED AT THE CONCLUSION REMARK 3 OF THE REFINEMENT. REMARK 3 IN REMARK 500, THE ATOMS IN ALL CASES REPRESENT COMPLEMENTARY REMARK 3 PAIRS WITH PARTIAL OCCUPANCIES. REMARK 4 REMARK 4 1LU0 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 07-JUN-02. REMARK 100 THE DEPOSITION ID IS D_1000016268. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 07-APR-00 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 6.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : EMBL/DESY, HAMBURG REMARK 200 BEAMLINE : BW7A REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.8919 REMARK 200 MONOCHROMATOR : SI, DOUBLE CRYSTAL, TUNABLE REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD 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 : 27045 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.030 REMARK 200 RESOLUTION RANGE LOW (A) : 15.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : -3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.2 REMARK 200 DATA REDUNDANCY : 9.300 REMARK 200 R MERGE (I) : 0.04700 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 30.7000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.03 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.07 REMARK 200 COMPLETENESS FOR SHELL (%) : 98.3 REMARK 200 DATA REDUNDANCY IN SHELL : 3.50 REMARK 200 R MERGE FOR SHELL (I) : 0.15100 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 2.730 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: DUAL-SPACE RECYCLING REMARK 200 SOFTWARE USED: SHELXD REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 44.80 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.23 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 8000, ZINC SULFATE, CACODYLATE, REMARK 280 MPD, PH 6.5, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 293.0K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 2 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 23.64000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 29.31500 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 23.64000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 29.31500 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 300 REMARK: FOUR MOLECULES OF THE INHIBITOR COORDINATE A SINGLE ZINC REMARK 300 CATION IN A TETRAHEDRAL FASHION VIA THEIR GLU19 SIDE CHAINS. TWO OF REMARK 300 THEM (MOLECULES A AND B) CONSTITUTE THE CONTENTS OF THE ASYMMETRIC REMARK 300 UNIT. THE FULL COORDINATION SPHERE IS GENERATED BY THE OPERATION: - REMARK 300 X, -Y, Z, OF A TWO-FOLD AXIS. THE ZINC CATION HAS A SPECIAL REMARK 300 POSITION (OCCUPANCY 0.5) ON THIS TWO-FOLD AXIS. 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: TETRAMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TETRAMERIC REMARK 350 SOFTWARE USED: PISA,PQS REMARK 350 TOTAL BURIED SURFACE AREA: 3410 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 8570 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -97.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B 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 350 BIOMT1 2 -1.000000 0.000000 0.000000 94.56000 REMARK 350 BIOMT2 2 0.000000 -1.000000 0.000000 117.26000 REMARK 350 BIOMT3 2 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 ZN ZN A 201 LIES ON A SPECIAL POSITION. REMARK 375 S SO4 B 205 LIES ON A SPECIAL POSITION. 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 5 NH1 - CZ - NH2 ANGL. DEV. = -8.2 DEGREES REMARK 500 ARG A 5 NE - CZ - NH1 ANGL. DEV. = -4.6 DEGREES REMARK 500 ARG A 5 NE - CZ - NH2 ANGL. DEV. = 6.4 DEGREES REMARK 500 LYS A 11 CB - CG - CD ANGL. DEV. = 16.0 DEGREES REMARK 500 TYR B 27 CG - CD1 - CE1 ANGL. DEV. = 5.6 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 ALA A 18 -128.59 55.06 REMARK 500 ALA B 18 -131.06 52.97 REMARK 500 REMARK 500 REMARK: NULL REMARK 610 REMARK 610 MISSING HETEROATOM REMARK 610 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER; REMARK 610 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 610 I=INSERTION CODE): REMARK 610 M RES C SSEQI REMARK 610 SO4 B 205 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 ZN A 201 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU A 19 OE1 REMARK 620 2 GLU A 19 OE1 93.8 REMARK 620 3 GLU B 19 OE2 116.7 121.1 REMARK 620 4 GLU B 19 OE1 88.1 81.4 53.2 REMARK 620 5 GLU B 19 OE1 81.4 88.1 142.0 164.7 REMARK 620 6 GLU B 19 OE2 121.1 116.7 90.0 142.0 53.2 REMARK 620 N 1 2 3 4 5 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 201 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 B 205 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MRD B 204 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE GOL A 202 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC5 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE GOL B 203 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1PPE RELATED DB: PDB REMARK 900 1PPE IS WILD TYPE SEQUENCE OF THE SAME PROTEIN COMPLEXED WITH REMARK 900 BOVINE TRYPSIN REMARK 900 RELATED ID: 2STA RELATED DB: PDB REMARK 900 2STA IS WILD TYPE SEQUENCE OF THE SAME PROTEIN COMPLEXED WITH REMARK 900 SALMON TRYPSIN REMARK 900 RELATED ID: 2STB RELATED DB: PDB REMARK 900 2STB IS A RELATED INHIBITOR COMPLEXED WITH SALMON TRYPSIN REMARK 900 RELATED ID: 2BTC RELATED DB: PDB REMARK 900 2BTC IS A RELATED INHIBITOR COMPLEXED WITH BOVINE TRYPSIN REMARK 900 RELATED ID: 1BXJ RELATED DB: PDB REMARK 900 1BXJ IS NMR STRUCTURE OF THE SAME PROTEIN REMARK 900 RELATED ID: 3CTI RELATED DB: PDB REMARK 900 3CTI IS NMR STRUCTURE OF WILD TYPE SEQUENCE OF THE SAME PROTEIN DBREF 1LU0 A 1 29 UNP P01074 ITR1_CUCMA 1 29 DBREF 1LU0 B 1 29 UNP P01074 ITR1_CUCMA 1 29 SEQADV 1LU0 LEU A 8 UNP P01074 MET 8 ENGINEERED MUTATION SEQADV 1LU0 LEU B 8 UNP P01074 MET 8 ENGINEERED MUTATION SEQRES 1 A 29 ARG VAL CYS PRO ARG ILE LEU LEU GLU CYS LYS LYS ASP SEQRES 2 A 29 SER ASP CYS LEU ALA GLU CYS VAL CYS LEU GLU HIS GLY SEQRES 3 A 29 TYR CYS GLY SEQRES 1 B 29 ARG VAL CYS PRO ARG ILE LEU LEU GLU CYS LYS LYS ASP SEQRES 2 B 29 SER ASP CYS LEU ALA GLU CYS VAL CYS LEU GLU HIS GLY SEQRES 3 B 29 TYR CYS GLY HET ZN A 201 1 HET GOL A 202 6 HET SO4 B 205 3 HET MRD B 204 8 HET GOL B 203 6 HETNAM ZN ZINC ION HETNAM GOL GLYCEROL HETNAM SO4 SULFATE ION HETNAM MRD (4R)-2-METHYLPENTANE-2,4-DIOL HETSYN GOL GLYCERIN; PROPANE-1,2,3-TRIOL FORMUL 3 ZN ZN 2+ FORMUL 4 GOL 2(C3 H8 O3) FORMUL 5 SO4 O4 S 2- FORMUL 6 MRD C6 H14 O2 FORMUL 8 HOH *76(H2 O) HELIX 1 1 LYS A 12 CYS A 16 5 5 HELIX 2 2 LYS B 12 CYS B 16 5 5 SHEET 1 A 2 VAL B 21 CYS B 22 0 SHEET 2 A 2 CYS B 28 GLY B 29 -1 O GLY B 29 N VAL B 21 SSBOND 1 CYS A 3 CYS A 20 1555 1555 2.02 SSBOND 2 CYS A 10 CYS A 22 1555 1555 2.06 SSBOND 3 CYS A 16 CYS A 28 1555 1555 2.07 SSBOND 4 CYS B 3 CYS B 20 1555 1555 2.01 SSBOND 5 CYS B 10 CYS B 22 1555 1555 2.05 SSBOND 6 CYS B 16 CYS B 28 1555 1555 2.07 LINK OE1 GLU A 19 ZN ZN A 201 1555 1555 1.98 LINK OE1 GLU A 19 ZN ZN A 201 2775 1555 1.98 LINK ZN ZN A 201 OE2 GLU B 19 1555 1555 2.01 LINK ZN ZN A 201 OE1 GLU B 19 1555 1555 2.71 LINK ZN ZN A 201 OE1 GLU B 19 1555 2775 2.71 LINK ZN ZN A 201 OE2 GLU B 19 1555 2775 2.01 SITE 1 AC1 2 GLU A 19 GLU B 19 SITE 1 AC2 4 ARG A 1 HOH A 357 GLU B 19 HOH B 347 SITE 1 AC3 6 ARG B 5 ASP B 15 CYS B 28 GLY B 29 SITE 2 AC3 6 GOL B 203 HOH B 325 SITE 1 AC4 8 CYS A 3 PRO A 4 ARG A 5 SER A 14 SITE 2 AC4 8 ASP A 15 CYS A 28 HOH A 310 HOH A 368 SITE 1 AC5 4 ILE A 6 GLU B 9 MRD B 204 HOH B 371 CRYST1 47.280 58.630 19.320 90.00 90.00 90.00 P 21 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 0.021151 0.000000 0.000000 0.00000 SCALE2 0.000000 0.017056 0.000000 0.00000 SCALE3 0.000000 0.000000 0.051760 0.00000 MASTER 344 0 5 2 2 0 7 6 0 0 0 6 END