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 6 30-OCT-24 1LU0 1 REMARK 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 <I/SIGMA(I)> 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 <I/SIGMA(I)> 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