PDB Short entry for 1SLX HEADER COMPLEX (SERINE PROTEASE/INHIBITOR) 07-FEB-96 1SLX TITLE RAT ANIONIC N143H, E151H TRYPSIN COMPLEXED TO A86H ECOTIN; ZINC-BOUND COMPND MOL_ID: 1; COMPND 2 MOLECULE: ECOTIN; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: TRYPSIN INHIBITOR; COMPND 5 ENGINEERED: YES; COMPND 6 MUTATION: YES; COMPND 7 MOL_ID: 2; COMPND 8 MOLECULE: ANIONIC TRYPSIN; COMPND 9 CHAIN: B; COMPND 10 EC: 3.4.21.4; COMPND 11 ENGINEERED: YES; COMPND 12 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI; SOURCE 3 ORGANISM_TAXID: 562; SOURCE 4 GENE: RAT ANIONIC TRYPSIN; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 7 EXPRESSION_SYSTEM_PLASMID: PTACTAC; SOURCE 8 EXPRESSION_SYSTEM_GENE: ECOTIN; SOURCE 9 MOL_ID: 2; SOURCE 10 ORGANISM_SCIENTIFIC: RATTUS NORVEGICUS; SOURCE 11 ORGANISM_COMMON: NORWAY RAT; SOURCE 12 ORGANISM_TAXID: 10116; SOURCE 13 GENE: RAT ANIONIC TRYPSIN; SOURCE 14 EXPRESSION_SYSTEM: SACCHAROMYCES CEREVISIAE; SOURCE 15 EXPRESSION_SYSTEM_COMMON: BAKER'S YEAST; SOURCE 16 EXPRESSION_SYSTEM_TAXID: 4932; SOURCE 17 EXPRESSION_SYSTEM_PLASMID: PST; SOURCE 18 EXPRESSION_SYSTEM_GENE: RAT ANIONIC TRYPSIN KEYWDS SERINE PROTEASE, INHIBITOR, COMPLEX, METAL BINDING SITES, PROTEIN KEYWDS 2 ENGINEERING, PROTEASE-SUBSTRATE INTERACTIONS, METALLOPROTEINS, KEYWDS 3 COMPLEX (SERINE PROTEASE-INHIBITOR) COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR L.S.BRINEN,R.J.FLETTERICK REVDAT 4 03-NOV-21 1SLX 1 REMARK SEQADV LINK REVDAT 3 13-JUL-11 1SLX 1 VERSN REVDAT 2 24-FEB-09 1SLX 1 VERSN REVDAT 1 11-JUL-96 1SLX 0 JRNL AUTH L.S.BRINEN,W.S.WILLETT,C.S.CRAIK,R.J.FLETTERICK JRNL TITL X-RAY STRUCTURES OF A DESIGNED BINDING SITE IN TRYPSIN SHOW JRNL TITL 2 METAL-DEPENDENT GEOMETRY. JRNL REF BIOCHEMISTRY V. 35 5999 1996 JRNL REFN ISSN 0006-2960 JRNL PMID 8634241 JRNL DOI 10.1021/BI9530200 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH M.E.MCGRATH,T.ERPEL,C.BYSTROFF,R.J.FLETTERICK REMARK 1 TITL MACROMOLECULAR CHELATION AS AN IMPROVED MECHANISM OF REMARK 1 TITL 2 PROTEASE INHIBITION: STRUCTURE OF THE ECOTIN-TRYPSIN COMPLEX REMARK 1 REF EMBO J. V. 13 1502 1994 REMARK 1 REFN ISSN 0261-4189 REMARK 2 REMARK 2 RESOLUTION. 2.20 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) : 2.20 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 6.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 1.500 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 87.4 REMARK 3 NUMBER OF REFLECTIONS : 6230 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) : 0.173 REMARK 3 FREE R VALUE : 0.267 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.000 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 : NULL REMARK 3 BIN RESOLUTION RANGE HIGH (A) : NULL REMARK 3 BIN RESOLUTION RANGE LOW (A) : NULL REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 REFLECTIONS IN BIN (WORKING SET) : NULL REMARK 3 BIN R VALUE (WORKING SET) : NULL 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 : 2674 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 6 REMARK 3 SOLVENT ATOMS : 63 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 27.64 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) : 0.24 REMARK 3 ESD FROM SIGMAA (A) : NULL REMARK 3 LOW RESOLUTION CUTOFF (A) : NULL 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) : 0.005 REMARK 3 BOND ANGLES (DEGREES) : 1.100 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 25.02 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.070 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 : PARAM19X.PRO REMARK 3 PARAMETER FILE 2 : NULL REMARK 3 PARAMETER FILE 3 : NULL REMARK 3 TOPOLOGY FILE 1 : NULL REMARK 3 TOPOLOGY FILE 2 : NULL REMARK 3 TOPOLOGY FILE 3 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1SLX COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL. REMARK 100 THE DEPOSITION ID IS D_1000176424. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 08-AUG-94 REMARK 200 TEMPERATURE (KELVIN) : 298 REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : NULL REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 46301 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.200 REMARK 200 RESOLUTION RANGE LOW (A) : 50.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 1.500 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 90.9 REMARK 200 DATA REDUNDANCY : 3.000 REMARK 200 R MERGE (I) : 0.06500 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : NULL 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: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL 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 (%): 50.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.47 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NULL REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 1 2 1 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 42.99000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 28.14000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 42.99000 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 28.14000 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: TETRAMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TETRAMERIC REMARK 350 SOFTWARE USED: PISA,PQS REMARK 350 TOTAL BURIED SURFACE AREA: 9070 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 30580 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -144.0 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 -3.11387 REMARK 350 BIOMT2 2 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 -1.000000 81.80075 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 HOH B 284 LIES ON A SPECIAL POSITION. REMARK 400 REMARK 400 COMPOUND REMARK 400 SITE DIRECTED MUTAGENESIS WAS PERFORMED IN ORDER TO REMARK 400 DESIGN A METAL BINDING SITE AT THE INTERFACE OF TRYPSIN REMARK 400 N143H,E151H AND ECOTIN A86H. METAL BINDING TAKES PLACE REMARK 400 AT THE SITE OF THESE MUTATIONS. 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 ALA A 1 REMARK 465 GLU A 2 REMARK 465 SER A 3 REMARK 465 VAL A 4 REMARK 465 GLN A 5 REMARK 465 PRO A 6 REMARK 465 LEU A 7 REMARK 465 GLU A 8 REMARK 465 LYS A 9 REMARK 465 GLY A 90 REMARK 465 LYS A 91 REMARK 465 LEU B 114 REMARK 465 ASN B 115 REMARK 465 ALA B 116 REMARK 465 ARG B 117 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 ILE A 10 CG1 CG2 CD1 REMARK 470 LYS A 18 CG CD CE NZ REMARK 470 TYR B 39 CG CD1 CD2 CE1 CE2 CZ OH REMARK 470 LEU B 145 CG CD1 CD2 REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS REMARK 500 REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC REMARK 500 SYMMETRY ARE IN CLOSE CONTACT. AN ATOM LOCATED WITHIN 0.15 REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375 REMARK 500 INSTEAD OF REMARK 500. ATOMS WITH NON-BLANK ALTERNATE REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS. REMARK 500 REMARK 500 DISTANCE CUTOFF: REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI SSYMOP DISTANCE REMARK 500 N VAL A 24 O VAL A 140 2556 2.07 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 11 -64.65 -147.88 REMARK 500 ASP A 49 -108.16 -78.43 REMARK 500 TRP A 67 -38.61 -130.99 REMARK 500 MET A 84 47.62 -82.98 REMARK 500 ALA A 104 22.01 -73.83 REMARK 500 GLU A 134 30.18 -80.16 REMARK 500 SER B 37 -61.70 -103.59 REMARK 500 TYR B 39 173.52 175.03 REMARK 500 ASP B 49 26.93 -75.63 REMARK 500 GLN B 50 2.27 -169.30 REMARK 500 HIS B 71 -55.40 -134.85 REMARK 500 ASN B 74 -71.09 -93.41 REMARK 500 GLU B 77 -16.23 -173.55 REMARK 500 GLU B 80 -79.89 -95.76 REMARK 500 GLN B 81 75.03 51.78 REMARK 500 PRO B 111 170.08 -53.09 REMARK 500 HIS B 143 132.15 -38.89 REMARK 500 LEU B 145 82.04 64.16 REMARK 500 SER B 146 -67.85 -143.12 REMARK 500 ASN B 150 76.52 31.88 REMARK 500 SER B 214 -78.73 -123.76 REMARK 500 LYS B 230 97.74 -69.03 REMARK 500 REMARK 500 REMARK: NULL 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 B 248 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 86 NE2 REMARK 620 2 HIS B 143 NE2 101.2 REMARK 620 3 HIS B 151 NE2 107.7 94.6 REMARK 620 N 1 2 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA B 246 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU B 70 OE1 REMARK 620 2 ASN B 72 O 79.4 REMARK 620 3 VAL B 75 O 139.1 92.6 REMARK 620 4 ACT B 247 C 89.6 164.6 102.7 REMARK 620 5 ACT B 247 O 95.7 152.4 73.2 38.8 REMARK 620 6 ACT B 247 OXT 76.6 127.6 134.3 38.0 76.3 REMARK 620 7 HOH B 249 O 154.3 87.6 62.9 98.0 105.6 94.5 REMARK 620 N 1 2 3 4 5 6 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: ZN1 REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: METAL (ZN) BINDING SITE. REMARK 800 REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA B 246 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ACT B 247 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN B 248 DBREF 1SLX A 1 142 UNP P23827 ECOT_ECOLI 21 162 DBREF 1SLX B 16 245 UNP P00763 TRY2_RAT 24 246 SEQADV 1SLX HIS A 86 UNP P23827 ALA 106 ENGINEERED MUTATION SEQADV 1SLX HIS B 143 UNP P00763 ASN 146 ENGINEERED MUTATION SEQADV 1SLX HIS B 151 UNP P00763 GLU 154 ENGINEERED MUTATION SEQRES 1 A 142 ALA GLU SER VAL GLN PRO LEU GLU LYS ILE ALA PRO TYR SEQRES 2 A 142 PRO GLN ALA GLU LYS GLY MET LYS ARG GLN VAL ILE GLN SEQRES 3 A 142 LEU THR PRO GLN GLU ASP GLU SER THR LEU LYS VAL GLU SEQRES 4 A 142 LEU LEU ILE GLY GLN THR LEU GLU VAL ASP CYS ASN LEU SEQRES 5 A 142 HIS ARG LEU GLY GLY LYS LEU GLU ASN LYS THR LEU GLU SEQRES 6 A 142 GLY TRP GLY TYR ASP TYR TYR VAL PHE ASP LYS VAL SER SEQRES 7 A 142 SER PRO VAL SER THR MET MET HIS CYS PRO ASP GLY LYS SEQRES 8 A 142 LYS GLU LYS LYS PHE VAL THR ALA TYR LEU GLY ASP ALA SEQRES 9 A 142 GLY MET LEU ARG TYR ASN SER LYS LEU PRO ILE VAL VAL SEQRES 10 A 142 TYR THR PRO ASP ASN VAL ASP VAL LYS TYR ARG VAL TRP SEQRES 11 A 142 LYS ALA GLU GLU LYS ILE ASP ASN ALA VAL VAL ARG SEQRES 1 B 223 ILE VAL GLY GLY TYR THR CYS GLN GLU ASN SER VAL PRO SEQRES 2 B 223 TYR GLN VAL SER LEU ASN SER GLY TYR HIS PHE CYS GLY SEQRES 3 B 223 GLY SER LEU ILE ASN ASP GLN TRP VAL VAL SER ALA ALA SEQRES 4 B 223 HIS CYS TYR LYS SER ARG ILE GLN VAL ARG LEU GLY GLU SEQRES 5 B 223 HIS ASN ILE ASN VAL LEU GLU GLY ASN GLU GLN PHE VAL SEQRES 6 B 223 ASN ALA ALA LYS ILE ILE LYS HIS PRO ASN PHE ASP ARG SEQRES 7 B 223 LYS THR LEU ASN ASN ASP ILE MET LEU ILE LYS LEU SER SEQRES 8 B 223 SER PRO VAL LYS LEU ASN ALA ARG VAL ALA THR VAL ALA SEQRES 9 B 223 LEU PRO SER SER CYS ALA PRO ALA GLY THR GLN CYS LEU SEQRES 10 B 223 ILE SER GLY TRP GLY HIS THR LEU SER SER GLY VAL ASN SEQRES 11 B 223 HIS PRO ASP LEU LEU GLN CYS LEU ASP ALA PRO LEU LEU SEQRES 12 B 223 PRO GLN ALA ASP CYS GLU ALA SER TYR PRO GLY LYS ILE SEQRES 13 B 223 THR ASP ASN MET VAL CYS VAL GLY PHE LEU GLU GLY GLY SEQRES 14 B 223 LYS ASP SER CYS GLN GLY ASP SER GLY GLY PRO VAL VAL SEQRES 15 B 223 CYS ASN GLY GLU LEU GLN GLY ILE VAL SER TRP GLY TYR SEQRES 16 B 223 GLY CYS ALA LEU PRO ASP ASN PRO GLY VAL TYR THR LYS SEQRES 17 B 223 VAL CYS ASN TYR VAL ASP TRP ILE GLN ASP THR ILE ALA SEQRES 18 B 223 ALA ASN HET CA B 246 1 HET ACT B 247 4 HET ZN B 248 1 HETNAM CA CALCIUM ION HETNAM ACT ACETATE ION HETNAM ZN ZINC ION FORMUL 3 CA CA 2+ FORMUL 4 ACT C2 H3 O2 1- FORMUL 5 ZN ZN 2+ FORMUL 6 HOH *63(H2 O) HELIX 1 1 GLU A 33 THR A 35 5 3 HELIX 2 2 GLY A 102 GLY A 105 5 4 HELIX 3 3 ALA B 56 CYS B 58 5 3 HELIX 4 4 GLN B 165 SER B 171 1 7 HELIX 5 5 VAL B 231 ASN B 233 5 3 HELIX 6 6 VAL B 235 ILE B 242 1 8 SHEET 1 A 4 MET A 20 ILE A 25 0 SHEET 2 A 4 ILE A 115 PRO A 120 -1 N THR A 119 O LYS A 21 SHEET 3 A 4 TYR A 69 ASP A 75 1 N TYR A 72 O VAL A 116 SHEET 4 A 4 LYS A 58 LEU A 64 -1 N LEU A 64 O TYR A 69 SHEET 1 B 3 ASP A 124 LYS A 131 0 SHEET 2 B 3 LEU A 36 GLY A 43 -1 N GLY A 43 O ASP A 124 SHEET 3 B 3 MET A 106 ARG A 108 -1 N LEU A 107 O VAL A 38 SHEET 1 C 2 GLY A 43 VAL A 48 0 SHEET 2 C 2 GLU A 93 THR A 98 -1 N VAL A 97 O GLN A 44 SHEET 1 D 7 PHE B 82 ASN B 84 0 SHEET 2 D 7 GLN B 64 ARG B 66 -1 N VAL B 65 O VAL B 83 SHEET 3 D 7 GLN B 30 ASN B 34 -1 N ASN B 34 O GLN B 64 SHEET 4 D 7 HIS B 40 ASN B 48 -1 N GLY B 44 O VAL B 31 SHEET 5 D 7 TRP B 51 SER B 54 -1 N VAL B 53 O SER B 45 SHEET 6 D 7 MET B 104 LEU B 108 -1 N ILE B 106 O VAL B 52 SHEET 7 D 7 ALA B 85 LYS B 90 -1 N ILE B 89 O LEU B 105 SHEET 1 E 2 GLN B 135 GLY B 140 0 SHEET 2 E 2 GLN B 156 PRO B 161 -1 N ALA B 160 O CYS B 136 SHEET 1 F 4 MET B 180 VAL B 183 0 SHEET 2 F 4 GLY B 226 THR B 229 -1 N TYR B 228 O VAL B 181 SHEET 3 F 4 GLU B 204 TRP B 215 -1 N TRP B 215 O VAL B 227 SHEET 4 F 4 PRO B 198 CYS B 201 -1 N CYS B 201 O GLU B 204 SSBOND 1 CYS A 50 CYS A 87 1555 1555 2.03 SSBOND 2 CYS B 22 CYS B 157 1555 1555 2.03 SSBOND 3 CYS B 42 CYS B 58 1555 1555 2.03 SSBOND 4 CYS B 128 CYS B 232 1555 1555 2.03 SSBOND 5 CYS B 136 CYS B 201 1555 1555 2.03 SSBOND 6 CYS B 168 CYS B 182 1555 1555 2.03 SSBOND 7 CYS B 191 CYS B 220 1555 1555 2.03 LINK NE2 HIS A 86 ZN ZN B 248 1555 1555 2.10 LINK OE1 GLU B 70 CA CA B 246 1555 1555 2.47 LINK O ASN B 72 CA CA B 246 1555 1555 1.78 LINK O VAL B 75 CA CA B 246 1555 1555 2.67 LINK NE2 HIS B 143 ZN ZN B 248 1555 1555 2.30 LINK NE2 HIS B 151 ZN ZN B 248 1555 1555 1.87 LINK CA CA B 246 C ACT B 247 1555 1555 1.97 LINK CA CA B 246 O ACT B 247 1555 1555 1.72 LINK CA CA B 246 OXT ACT B 247 1555 1555 1.83 LINK CA CA B 246 O HOH B 249 1555 1555 1.73 SITE 1 ZN1 3 HIS A 86 HIS B 143 HIS B 151 SITE 1 AC1 6 GLU B 70 ASN B 72 VAL B 75 GLU B 77 SITE 2 AC1 6 ACT B 247 HOH B 249 SITE 1 AC2 9 GLU B 70 ASN B 72 VAL B 75 LEU B 76 SITE 2 AC2 9 GLU B 77 ASN B 79 GLU B 80 CA B 246 SITE 3 AC2 9 HOH B 249 SITE 1 AC3 3 HIS A 86 HIS B 143 HIS B 151 CRYST1 85.980 56.280 81.860 90.00 92.18 90.00 C 1 2 1 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 0.011631 0.000000 0.000443 0.00000 SCALE2 0.000000 0.017768 0.000000 0.00000 SCALE3 0.000000 0.000000 0.012225 0.00000