HEADER HYDROLASE 09-DEC-03 1UTK TITLE TRYPSIN SPECIFICITY AS ELUCIDATED BY LIE CALCULATIONS, X-RAY TITLE 2 STRUCTURES AND ASSOCIATION CONSTANT MEASUREMENTS COMPND MOL_ID: 1; COMPND 2 MOLECULE: TRYPSIN I; COMPND 3 CHAIN: A; COMPND 4 EC: 3.4.21.4 SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SALMO SALAR; SOURCE 3 ORGANISM_COMMON: ATLANTIC SALMON; SOURCE 4 ORGANISM_TAXID: 8030; SOURCE 5 ORGAN: PYLORIC CAECA KEYWDS HYDROLASE, TRYPSIN, INHIBITOR SPECIFICITY, ELECTROSTATIC KEYWDS 2 INTERACTIONS, COLD-ADAPTATION, MOLECULAR DYNAMICS, BINDING FREE KEYWDS 3 ENERGY EXPDTA X-RAY DIFFRACTION AUTHOR H.-K.S.LEIROS,B.O.BRANDSDAL,O.A.ANDERSEN,V.OS,I.LEIROS,R.HELLAND, AUTHOR 2 J.OTLEWSKI,N.P.WILLASSEN,A.O.SMALAS REVDAT 4 09-OCT-24 1UTK 1 LINK REVDAT 3 24-FEB-09 1UTK 1 VERSN REVDAT 2 15-APR-04 1UTK 1 JRNL REVDAT 1 29-JAN-04 1UTK 0 JRNL AUTH H.-K.S.LEIROS,B.O.BRANDSDAL,O.A.ANDERSEN,V.OS,I.LEIROS, JRNL AUTH 2 R.HELLAND,J.OTLEWSKI,N.P.WILLASSEN,A.O.SMALAS JRNL TITL TRYPSIN SPECIFICITY AS ELUCIDATED BY LIE CALCULATIONS, X-RAY JRNL TITL 2 STRUCTURES, AND ASSOCIATION CONSTANT MEASUREMENTS JRNL REF PROTEIN SCI. V. 13 1056 2004 JRNL REFN ISSN 0961-8368 JRNL PMID 15044735 JRNL DOI 10.1110/PS.03498604 REMARK 2 REMARK 2 RESOLUTION. 1.53 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) : 1.53 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 8.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 99.5 REMARK 3 CROSS-VALIDATION METHOD : THROUGHOUT 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) : 0.177 REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : 0.177 REMARK 3 FREE R VALUE (NO CUTOFF) : 0.229 REMARK 3 FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : 7.000 REMARK 3 FREE R VALUE TEST SET COUNT (NO CUTOFF) : NULL REMARK 3 TOTAL NUMBER OF REFLECTIONS (NO CUTOFF) : 28246 REMARK 3 REMARK 3 FIT/AGREEMENT OF MODEL FOR DATA WITH F>4SIG(F). REMARK 3 R VALUE (WORKING + TEST SET, F>4SIG(F)) : NULL REMARK 3 R VALUE (WORKING SET, F>4SIG(F)) : NULL REMARK 3 FREE R VALUE (F>4SIG(F)) : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%, F>4SIG(F)) : NULL REMARK 3 FREE R VALUE TEST SET COUNT (F>4SIG(F)) : NULL REMARK 3 TOTAL NUMBER OF REFLECTIONS (F>4SIG(F)) : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1666 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 11 REMARK 3 SOLVENT ATOMS : 180 REMARK 3 REMARK 3 MODEL REFINEMENT. REMARK 3 OCCUPANCY SUM OF NON-HYDROGEN ATOMS : NULL REMARK 3 OCCUPANCY SUM OF HYDROGEN ATOMS : NULL REMARK 3 NUMBER OF DISCRETELY DISORDERED RESIDUES : NULL REMARK 3 NUMBER OF LEAST-SQUARES PARAMETERS : NULL REMARK 3 NUMBER OF RESTRAINTS : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM RESTRAINT TARGET VALUES. REMARK 3 BOND LENGTHS (A) : 0.009 REMARK 3 ANGLE DISTANCES (A) : 0.024 REMARK 3 SIMILAR DISTANCES (NO TARGET VALUES) (A) : NULL REMARK 3 DISTANCES FROM RESTRAINT PLANES (A) : NULL REMARK 3 ZERO CHIRAL VOLUMES (A**3) : NULL REMARK 3 NON-ZERO CHIRAL VOLUMES (A**3) : NULL REMARK 3 ANTI-BUMPING DISTANCE RESTRAINTS (A) : NULL REMARK 3 RIGID-BOND ADP COMPONENTS (A**2) : NULL REMARK 3 SIMILAR ADP COMPONENTS (A**2) : NULL REMARK 3 APPROXIMATELY ISOTROPIC ADPS (A**2) : NULL REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED: NULL REMARK 3 REMARK 3 STEREOCHEMISTRY TARGET VALUES : NULL REMARK 3 SPECIAL CASE: NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1UTK COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 09-DEC-03. REMARK 100 THE DEPOSITION ID IS D_1290014162. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : NULL REMARK 200 TEMPERATURE (KELVIN) : 120.0 REMARK 200 PH : 6.00 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : ESRF REMARK 200 BEAMLINE : BM1A REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.873 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALA REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 28246 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.530 REMARK 200 RESOLUTION RANGE LOW (A) : 8.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.5 REMARK 200 DATA REDUNDANCY : 5.500 REMARK 200 R MERGE (I) : 0.07500 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 2.6000 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 <I/SIGMA(I)> FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: OTHER 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 (%): 30.33 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.77 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PH 6.00 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 35.71500 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 41.63000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 35.71500 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 41.63000 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 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 465 REMARK 465 MISSING RESIDUES REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.) REMARK 465 REMARK 465 M RES C SSSEQI REMARK 465 MET A -5 REMARK 465 ILE A -4 REMARK 465 SER A -3 REMARK 465 LEU A -2 REMARK 465 VAL A -1 REMARK 465 PHE A 1 REMARK 465 VAL A 2 REMARK 465 LEU A 3 REMARK 465 LEU A 4 REMARK 465 ILE A 5 REMARK 465 GLY A 6 REMARK 465 ALA A 7 REMARK 465 ALA A 8 REMARK 465 PHE A 9 REMARK 465 ALA A 10 REMARK 465 THR A 11 REMARK 465 GLU A 12 REMARK 465 ASP A 13 REMARK 465 ASP A 14 REMARK 465 LYS A 15 REMARK 475 REMARK 475 ZERO OCCUPANCY RESIDUES REMARK 475 THE FOLLOWING RESIDUES WERE MODELED WITH ZERO OCCUPANCY. REMARK 475 THE LOCATION AND PROPERTIES OF THESE RESIDUES MAY NOT REMARK 475 BE RELIABLE. (M=MODEL NUMBER; RES=RESIDUE NAME; REMARK 475 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE) REMARK 475 M RES C SSEQI REMARK 475 TYR A 245 REMARK 480 REMARK 480 ZERO OCCUPANCY ATOM REMARK 480 THE FOLLOWING RESIDUES HAVE ATOMS MODELED WITH ZERO REMARK 480 OCCUPANCY. THE LOCATION AND PROPERTIES OF THESE ATOMS REMARK 480 MAY NOT BE RELIABLE. (M=MODEL NUMBER; RES=RESIDUE NAME; REMARK 480 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE): REMARK 480 M RES C SSEQI ATOMS REMARK 480 LYS A 23 CE NZ REMARK 480 GLU A 49 CD OE1 OE2 REMARK 480 ARG A 62 CD NE CZ REMARK 480 LYS A 74 NZ REMARK 480 ARG A 87 CZ NH2 REMARK 480 ARG A 90 CZ NH1 NH2 REMARK 480 LYS A 107 NZ REMARK 480 LYS A 110 CG CD CE NZ REMARK 480 ASN A 143 ND2 REMARK 480 SER A 147 CB REMARK 480 THR A 148 CG2 REMARK 480 GLU A 186 CG OE2 REMARK 480 LYS A 188 CE NZ REMARK 480 GLN A 192 CG CD NE2 REMARK 480 TYR A 217 CD2 REMARK 480 SER A 244 CA OG 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 66 NE - CZ - NH1 ANGL. DEV. = 4.3 DEGREES REMARK 500 ARG A 66 NE - CZ - NH2 ANGL. DEV. = -6.9 DEGREES REMARK 500 ASP A 189 CB - CG - OD1 ANGL. DEV. = 7.4 DEGREES REMARK 500 TYR A 228 CB - CG - CD1 ANGL. DEV. = 5.8 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 GLN A 27 65.79 -119.45 REMARK 500 HIS A 71 -62.60 -120.76 REMARK 500 ASN A 115 -159.17 -163.72 REMARK 500 SER A 214 -67.93 -122.47 REMARK 500 REMARK 500 REMARK: NULL REMARK 525 REMARK 525 SOLVENT REMARK 525 REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER; REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE REMARK 525 NUMBER; I=INSERTION CODE): REMARK 525 REMARK 525 M RES CSSEQI REMARK 525 HOH A2044 DISTANCE = 6.06 ANGSTROMS 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 A1248 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU A 70 OE1 REMARK 620 2 ASN A 72 O 86.7 REMARK 620 3 VAL A 75 O 158.6 84.9 REMARK 620 4 GLU A 77 OE1 96.6 88.0 102.7 REMARK 620 5 GLU A 80 OE2 107.3 165.1 83.6 85.2 REMARK 620 6 HOH A2049 O 77.7 104.2 85.4 166.0 84.4 REMARK 620 N 1 2 3 4 5 REMARK 700 REMARK 700 SHEET REMARK 700 DETERMINATION METHOD: DSSP REMARK 700 THE SHEETS PRESENTED AS "AB" IN EACH CHAIN ON SHEET RECORDS REMARK 700 BELOW IS ACTUALLY AN 6-STRANDED BARREL THIS IS REPRESENTED BY REMARK 700 A 7-STRANDED SHEET IN WHICH THE FIRST AND LAST STRANDS REMARK 700 ARE IDENTICAL. REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A1246 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A1247 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A1248 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1BIT RELATED DB: PDB REMARK 900 TRYPSIN (ANIONIC) COMPLEXED WITH THE INHIBITOR BENZAMIDINE REMARK 900 RELATED ID: 1BZX RELATED DB: PDB REMARK 900 THE CRYSTAL STRUCTURE OF ANIONIC SALMON TRYPSIN IN COMPLEX WITH REMARK 900 BOVINE PANCREATIC TRYPSIN INHIBITOR REMARK 900 RELATED ID: 1HJ8 RELATED DB: PDB REMARK 900 1.00 AA TRYPSIN FROM ATLANTIC SALMON REMARK 900 RELATED ID: 1UTJ RELATED DB: PDB REMARK 900 TRYPSIN SPECIFICITY AS ELUCIDATED BY LIE CALCULATIONS, X-RAY REMARK 900 STRUCTURES AND ASSOCIATION CONSTANT MEASUREMENTS REMARK 900 RELATED ID: 1UTL RELATED DB: PDB REMARK 900 TRYPSIN SPECIFICITY AS ELUCIDATED BY LIE CALCULATIONS, X-RAY REMARK 900 STRUCTURES AND ASSOCIATION CONSTANT MEASUREMENTS REMARK 900 RELATED ID: 1UTM RELATED DB: PDB REMARK 900 TRYPSIN SPECIFICITY AS ELUCIDATED BY LIE CALCULATIONS, X-RAY REMARK 900 STRUCTURES AND ASSOCIATION CONSTANT MEASUREMENTS REMARK 900 RELATED ID: 1UTN RELATED DB: PDB REMARK 900 TRYPSIN SPECIFICITY AS ELUCIDATED BY LIE CALCULATIONS, X-RAY REMARK 900 STRUCTURES AND ASSOCIATION CONSTANT MEASUREMENTS REMARK 900 RELATED ID: 1UTO RELATED DB: PDB REMARK 900 TRYPSIN SPECIFICITY AS ELUCIDATED BY LIE CALCULATIONS, X-RAY REMARK 900 STRUCTURES AND ASSOCIATION CONSTANT MEASUREMENTS REMARK 900 RELATED ID: 1UTP RELATED DB: PDB REMARK 900 TRYPSIN SPECIFICITY AS ELUCIDATED BY LIE CALCULATIONS, X-RAY REMARK 900 STRUCTURES AND ASSOCIATION CONSTANT MEASUREMENTS REMARK 900 RELATED ID: 1UTQ RELATED DB: PDB REMARK 900 TRYPSIN SPECIFICITY AS ELUCIDATED BY LIE CALCULATIONS, X-RAY REMARK 900 STRUCTURES AND ASSOCIATION CONSTANT MEASUREMENTS REMARK 900 RELATED ID: 2STA RELATED DB: PDB REMARK 900 ANIONIC SALMON TRYPSIN IN COMPLEX WITH SQUASH SEED INHIBITOR REMARK 900 (CUCURBITA MAXIMA TRYPSIN INHIBITOR I) REMARK 900 RELATED ID: 2STB RELATED DB: PDB REMARK 900 ANIONIC SALMON TRYPSIN IN COMPLEX WITH SQUASH SEED INHIBITOR REMARK 900 (CUCURBITA PEPO TRYPSIN INHIBITOR II) REMARK 900 RELATED ID: 2TBS RELATED DB: PDB REMARK 900 TRYPSIN COMPLEXED WITH BENZAMIDINE INHIBITOR DBREF 1UTK A -5 245 UNP P35031 TRY1_SALSA 1 242 SEQADV 1UTK PRO A 24 UNP P35031 ALA 29 CONFLICT SEQADV 1UTK PRO A 28 UNP P35031 THR 33 CONFLICT SEQRES 1 A 242 MET ILE SER LEU VAL PHE VAL LEU LEU ILE GLY ALA ALA SEQRES 2 A 242 PHE ALA THR GLU ASP ASP LYS ILE VAL GLY GLY TYR GLU SEQRES 3 A 242 CYS LYS PRO TYR SER GLN PRO HIS GLN VAL SER LEU ASN SEQRES 4 A 242 SER GLY TYR HIS PHE CYS GLY GLY SER LEU VAL ASN GLU SEQRES 5 A 242 ASN TRP VAL VAL SER ALA ALA HIS CYS TYR LYS SER ARG SEQRES 6 A 242 VAL GLU VAL ARG LEU GLY GLU HIS ASN ILE LYS VAL THR SEQRES 7 A 242 GLU GLY SER GLU GLN PHE ILE SER SER SER ARG VAL ILE SEQRES 8 A 242 ARG HIS PRO ASN TYR SER SER TYR ASN ILE ASP ASN ASP SEQRES 9 A 242 ILE MET LEU ILE LYS LEU SER LYS PRO ALA THR LEU ASN SEQRES 10 A 242 THR TYR VAL GLN PRO VAL ALA LEU PRO THR SER CYS ALA SEQRES 11 A 242 PRO ALA GLY THR MET CYS THR VAL SER GLY TRP GLY ASN SEQRES 12 A 242 THR MET SER SER THR ALA ASP SER ASN LYS LEU GLN CYS SEQRES 13 A 242 LEU ASN ILE PRO ILE LEU SER TYR SER ASP CYS ASN ASN SEQRES 14 A 242 SER TYR PRO GLY MET ILE THR ASN ALA MET PHE CYS ALA SEQRES 15 A 242 GLY TYR LEU GLU GLY GLY LYS ASP SER CYS GLN GLY ASP SEQRES 16 A 242 SER GLY GLY PRO VAL VAL CYS ASN GLY GLU LEU GLN GLY SEQRES 17 A 242 VAL VAL SER TRP GLY TYR GLY CYS ALA GLU PRO GLY ASN SEQRES 18 A 242 PRO GLY VAL TYR ALA LYS VAL CYS ILE PHE ASN ASP TRP SEQRES 19 A 242 LEU THR SER THR MET ALA SER TYR HET SO4 A1246 5 HET SO4 A1247 5 HET CA A1248 1 HETNAM SO4 SULFATE ION HETNAM CA CALCIUM ION FORMUL 2 SO4 2(O4 S 2-) FORMUL 4 CA CA 2+ FORMUL 5 HOH *180(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 PHE A 234 ALA A 243 1 10 SHEET 1 AA 7 TYR A 20 GLU A 21 0 SHEET 2 AA 7 GLN A 156 PRO A 161 -1 O CYS A 157 N TYR A 20 SHEET 3 AA 7 MET A 135 GLY A 140 -1 O CYS A 136 N ILE A 160 SHEET 4 AA 7 PRO A 198 CYS A 201 -1 O PRO A 198 N SER A 139 SHEET 5 AA 7 GLU A 204 TRP A 215 -1 O GLU A 204 N CYS A 201 SHEET 6 AA 7 GLY A 226 LYS A 230 -1 O VAL A 227 N TRP A 215 SHEET 7 AA 7 MET A 180 ALA A 183 -1 O PHE A 181 N TYR A 228 SHEET 1 AB 7 GLN A 30 ASN A 34 0 SHEET 2 AB 7 HIS A 40 ASN A 48 -1 N PHE A 41 O LEU A 33 SHEET 3 AB 7 TRP A 51 SER A 54 -1 O TRP A 51 N VAL A 47 SHEET 4 AB 7 MET A 104 LEU A 108 -1 O MET A 104 N SER A 54 SHEET 5 AB 7 GLN A 81 ARG A 90 -1 N SER A 86 O LYS A 107 SHEET 6 AB 7 GLU A 64 LEU A 67 -1 O VAL A 65 N ILE A 83 SHEET 7 AB 7 GLN A 30 ASN A 34 -1 O SER A 32 N ARG A 66 SSBOND 1 CYS A 22 CYS A 157 1555 1555 2.04 SSBOND 2 CYS A 42 CYS A 58 1555 1555 2.02 SSBOND 3 CYS A 128 CYS A 232 1555 1555 2.04 SSBOND 4 CYS A 136 CYS A 201 1555 1555 2.00 SSBOND 5 CYS A 168 CYS A 182 1555 1555 2.02 SSBOND 6 CYS A 191 CYS A 220 1555 1555 2.04 LINK OE1 GLU A 70 CA CA A1248 1555 1555 2.26 LINK O ASN A 72 CA CA A1248 1555 1555 2.34 LINK O VAL A 75 CA CA A1248 1555 1555 2.25 LINK OE1 GLU A 77 CA CA A1248 1555 1555 2.42 LINK OE2 GLU A 80 CA CA A1248 1555 1555 2.32 LINK CA CA A1248 O HOH A2049 1555 1555 2.40 SITE 1 AC1 5 HIS A 57 GLN A 192 GLY A 193 SER A 195 SITE 2 AC1 5 HOH A2025 SITE 1 AC2 8 ASN A 34 TYR A 39 ILE A 73 LYS A 74 SITE 2 AC2 8 ASN A 170 HOH A2018 HOH A2179 HOH A2180 SITE 1 AC3 6 GLU A 70 ASN A 72 VAL A 75 GLU A 77 SITE 2 AC3 6 GLU A 80 HOH A2049 CRYST1 71.430 83.260 30.870 90.00 90.00 90.00 P 21 21 2 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 0.014000 0.000000 0.000000 0.00000 SCALE2 0.000000 0.012010 0.000000 0.00000 SCALE3 0.000000 0.000000 0.032394 0.00000