HEADER HYDROLASE/HYDROLASE INHIBITOR 02-MAY-99 1EKB TITLE THE SERINE PROTEASE DOMAIN OF ENTEROPEPTIDASE BOUND TO INHIBITOR VAL- TITLE 2 ASP-ASP-ASP-ASP-LYS-CHLOROMETHANE COMPND MOL_ID: 1; COMPND 2 MOLECULE: ENTEROPEPTIDASE; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: 13-AMINO ACID REMNANT OF AMINO TERMINAL DOMAIN OF HEAVY COMPND 5 CHAIN; COMPND 6 SYNONYM: ENTEROKINASE, HEAVY CHAIN; COMPND 7 EC: 3.4.21.9; COMPND 8 ENGINEERED: YES; COMPND 9 MOL_ID: 2; COMPND 10 MOLECULE: ENTEROPEPTIDASE; COMPND 11 CHAIN: B; COMPND 12 FRAGMENT: SERINE PROTEASE DOMAIN OR LIGHT CHAIN; COMPND 13 SYNONYM: ENTEROKINASE, LIGHT CHAIN; COMPND 14 EC: 3.4.21.9; COMPND 15 ENGINEERED: YES; COMPND 16 MOL_ID: 3; COMPND 17 MOLECULE: VAL-ASP-ASP-ASP-ASP-LYK PEPTIDE; COMPND 18 CHAIN: C; COMPND 19 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: BOS TAURUS; SOURCE 3 ORGANISM_COMMON: CATTLE; SOURCE 4 ORGANISM_TAXID: 9913; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 6 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: BL21(DE3); SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: PETL; SOURCE 10 MOL_ID: 2; SOURCE 11 ORGANISM_SCIENTIFIC: BOS TAURUS; SOURCE 12 ORGANISM_COMMON: CATTLE; SOURCE 13 ORGANISM_TAXID: 9913; SOURCE 14 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 15 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 16 EXPRESSION_SYSTEM_STRAIN: BL21(DE3); SOURCE 17 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 18 EXPRESSION_SYSTEM_PLASMID: PETL; SOURCE 19 MOL_ID: 3; SOURCE 20 SYNTHETIC: YES KEYWDS ENTEROPEPTIDASE, TRYPSINOGEN ACTIVATION, HYDROLASE-HYDROLASE KEYWDS 2 INHIBITOR COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR K.FUETTERER,D.LU,J.E.SADLER,G.WAKSMAN REVDAT 6 06-NOV-24 1EKB 1 REMARK REVDAT 5 02-AUG-23 1EKB 1 REMARK LINK REVDAT 4 13-JUL-11 1EKB 1 VERSN REVDAT 3 24-FEB-09 1EKB 1 VERSN REVDAT 2 01-APR-03 1EKB 1 JRNL REVDAT 1 14-OCT-99 1EKB 0 JRNL AUTH D.LU,K.FUTTERER,S.KOROLEV,X.ZHENG,K.TAN,G.WAKSMAN,J.E.SADLER JRNL TITL CRYSTAL STRUCTURE OF ENTEROPEPTIDASE LIGHT CHAIN COMPLEXED JRNL TITL 2 WITH AN ANALOG OF THE TRYPSINOGEN ACTIVATION PEPTIDE. JRNL REF J.MOL.BIOL. V. 292 361 1999 JRNL REFN ISSN 0022-2836 JRNL PMID 10493881 JRNL DOI 10.1006/JMBI.1999.3089 REMARK 2 REMARK 2 RESOLUTION. 2.30 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 0.5 REMARK 3 AUTHORS : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE- REMARK 3 : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU, REMARK 3 : READ,RICE,SIMONSON,WARREN REMARK 3 REMARK 3 REFINEMENT TARGET : NULL REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.30 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 30.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 92.4 REMARK 3 NUMBER OF REFLECTIONS : 10400 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : THROUGHOUT REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING SET) : 0.234 REMARK 3 FREE R VALUE : 0.269 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 4.900 REMARK 3 FREE R VALUE TEST SET COUNT : 546 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.012 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 8 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.30 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.40 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 88.30 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 1142 REMARK 3 BIN R VALUE (WORKING SET) : 0.2950 REMARK 3 BIN FREE R VALUE : 0.3670 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 5.80 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 70 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.044 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1911 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 2 REMARK 3 SOLVENT ATOMS : 108 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 32.20 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 23.80 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) : 0.32 REMARK 3 ESD FROM SIGMAA (A) : 0.28 REMARK 3 LOW RESOLUTION CUTOFF (A) : 5.00 REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.41 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.39 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.006 REMARK 3 BOND ANGLES (DEGREES) : 1.400 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 25.40 REMARK 3 IMPROPER ANGLES (DEGREES) : 0.730 REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : RESTRAINED REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : 1.480 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 2.040 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 2.470 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 3.000 ; 2.500 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.35 REMARK 3 BSOL : 24.18 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 : PROTEIN_REP_CH2.PARAM REMARK 3 PARAMETER FILE 2 : WATER.PARAM REMARK 3 PARAMETER FILE 3 : ION.PARAM REMARK 3 PARAMETER FILE 4 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN_CH2.TOP REMARK 3 TOPOLOGY FILE 2 : WATER.TOP REMARK 3 TOPOLOGY FILE 3 : ION.TOP REMARK 3 TOPOLOGY FILE 4 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1EKB COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY NDB. REMARK 100 THE DEPOSITION ID IS D_1000000986. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 15-APR-98 REMARK 200 TEMPERATURE (KELVIN) : 100.0 REMARK 200 PH : 7.5 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 RU200 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : GRAPHITE 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 : 10541 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.300 REMARK 200 RESOLUTION RANGE LOW (A) : 30.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 1.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 92.6 REMARK 200 DATA REDUNDANCY : 3.000 REMARK 200 R MERGE (I) : 0.04400 REMARK 200 R SYM (I) : 0.04400 REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 10.0000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.30 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.38 REMARK 200 COMPLETENESS FOR SHELL (%) : 89.2 REMARK 200 DATA REDUNDANCY IN SHELL : 2.00 REMARK 200 R MERGE FOR SHELL (I) : 0.08800 REMARK 200 R SYM FOR SHELL (I) : 0.08800 REMARK 200 <I/SIGMA(I)> FOR SHELL : 3.000 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: AMORE REMARK 200 STARTING MODEL: PDB ENTRY 1GCD REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 40.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.12 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PH 7.5 REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21 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 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 19.99500 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 42.61000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 35.32500 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 42.61000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 19.99500 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 35.32500 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: TRIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TRIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 2010 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 10270 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -59.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, C 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 VAL-ASP-ASP-ASP-ASP-LYK-CHLOROMETHANE (CHAIN C) HAS FORMED REMARK 400 CONNECTIONS TO ENTEROPETPIDASE: 1) VIA A HEMIKETAL GROUP REMARK 400 FROM FROM C OF LYK C 306 TO OG OF SER B 195. 2) VIA A REMARK 400 METHYLENE GROUP FROM 0QE C 307 TO NE2 OF HIS B 57. 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 GLN A 8 REMARK 465 GLU A 9 REMARK 465 VAL A 10 REMARK 465 SER A 11 REMARK 465 PRO A 12 REMARK 465 LYS A 13 REMARK 465 VAL C 301 REMARK 465 ASP C 302 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 LYS A 3 CG CD CE NZ REMARK 470 ARG B 97 CG CD NE CZ NH1 NH2 REMARK 470 ASN B 205 CG OD1 ND2 REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT REMARK 500 REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT. REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI DISTANCE REMARK 500 OG SER B 195 O LYK C 306 2.03 REMARK 500 REMARK 500 REMARK: NULL 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 LEU B 199 N - CA - C ANGL. DEV. = -16.7 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 ARG B 60F 47.60 -160.29 REMARK 500 GLU B 60I 77.06 -116.35 REMARK 500 HIS B 71 -69.79 -127.64 REMARK 500 THR B 115 -169.17 -125.94 REMARK 500 ASN B 204 69.88 66.57 REMARK 500 ASN B 205 -25.83 74.91 REMARK 500 GLN B 219 -154.26 56.18 REMARK 500 LEU B 242 83.00 -46.12 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 311 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP B 50 OD2 REMARK 620 2 HOH B 479 O 127.7 REMARK 620 N 1 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN B 310 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN B 311 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR CHAIN C OF VAL-ASP-ASP-ASP-ASP REMARK 800 -LYK PEPTIDE DBREF 1EKB A 1 13 UNP P98072 ENTK_BOVIN 788 800 DBREF 1EKB B 16 243 UNP P98072 ENTK_BOVIN 801 1035 DBREF 1EKB C 303 307 PDB 1EKB 1EKB 303 307 SEQRES 1 A 13 CYS GLY LYS LYS LEU VAL THR GLN GLU VAL SER PRO LYS SEQRES 1 B 235 ILE VAL GLY GLY SER ASP SER ARG GLU GLY ALA TRP PRO SEQRES 2 B 235 TRP VAL VAL ALA LEU TYR PHE ASP ASP GLN GLN VAL CYS SEQRES 3 B 235 GLY ALA SER LEU VAL SER ARG ASP TRP LEU VAL SER ALA SEQRES 4 B 235 ALA HIS CYS VAL TYR GLY ARG ASN MET GLU PRO SER LYS SEQRES 5 B 235 TRP LYS ALA VAL LEU GLY LEU HIS MET ALA SER ASN LEU SEQRES 6 B 235 THR SER PRO GLN ILE GLU THR ARG LEU ILE ASP GLN ILE SEQRES 7 B 235 VAL ILE ASN PRO HIS TYR ASN LYS ARG ARG LYS ASN ASN SEQRES 8 B 235 ASP ILE ALA MET MET HIS LEU GLU MET LYS VAL ASN TYR SEQRES 9 B 235 THR ASP TYR ILE GLN PRO ILE CYS LEU PRO GLU GLU ASN SEQRES 10 B 235 GLN VAL PHE PRO PRO GLY ARG ILE CYS SER ILE ALA GLY SEQRES 11 B 235 TRP GLY ALA LEU ILE TYR GLN GLY SER THR ALA ASP VAL SEQRES 12 B 235 LEU GLN GLU ALA ASP VAL PRO LEU LEU SER ASN GLU LYS SEQRES 13 B 235 CYS GLN GLN GLN MET PRO GLU TYR ASN ILE THR GLU ASN SEQRES 14 B 235 MET VAL CYS ALA GLY TYR GLU ALA GLY GLY VAL ASP SER SEQRES 15 B 235 CYS GLN GLY ASP SER GLY GLY PRO LEU MET CYS GLN GLU SEQRES 16 B 235 ASN ASN ARG TRP LEU LEU ALA GLY VAL THR SER PHE GLY SEQRES 17 B 235 TYR GLN CYS ALA LEU PRO ASN ARG PRO GLY VAL TYR ALA SEQRES 18 B 235 ARG VAL PRO ARG PHE THR GLU TRP ILE GLN SER PHE LEU SEQRES 19 B 235 HIS SEQRES 1 C 7 VAL ASP ASP ASP ASP LYK 0QE HET LYK C 306 9 HET 0QE C 307 1 HET ZN B 310 1 HET ZN B 311 1 HETNAM LYK (2S)-2,6-DIAMINOHEXANE-1,1-DIOL HETNAM 0QE CHLOROMETHANE HETNAM ZN ZINC ION HETSYN 0QE CHLORO METHYL GROUP FORMUL 3 LYK C6 H16 N2 O2 FORMUL 3 0QE C H3 CL FORMUL 4 ZN 2(ZN 2+) FORMUL 6 HOH *108(H2 O) HELIX 1 1 ALA B 56 VAL B 59 1 4 HELIX 2 2 PRO B 61 LYS B 63 5 3 HELIX 3 3 ASN B 165 GLN B 171 1 7 HELIX 4 4 VAL B 231 ARG B 233 5 3 HELIX 5 5 THR B 235 GLN B 239 1 5 SHEET 1 A 4 GLU B 81 LEU B 84 0 SHEET 2 A 4 TRP B 64 LEU B 68 -1 N LEU B 68 O GLU B 81 SHEET 3 A 4 VAL B 30 PHE B 35 -1 N TYR B 34 O LYS B 65 SHEET 4 A 4 GLN B 40 SER B 45 -1 N ALA B 44 O VAL B 31 SHEET 1 B 3 TRP B 51 SER B 54 0 SHEET 2 B 3 ALA B 104 LEU B 108 -1 N MET B 106 O LEU B 52 SHEET 3 B 3 ILE B 85 ILE B 90 -1 N VAL B 89 O MET B 105 SHEET 1 C 2 ILE B 135 GLY B 140 0 SHEET 2 C 2 GLN B 156 PRO B 161 -1 N VAL B 160 O CYS B 136 SHEET 1 D 4 MET B 180 ALA B 183 0 SHEET 2 D 4 GLY B 226 ARG B 230 -1 N TYR B 228 O VAL B 181 SHEET 3 D 4 ARG B 206 PHE B 215 -1 N PHE B 215 O VAL B 227 SHEET 4 D 4 PRO B 198 GLU B 203 -1 N GLU B 203 O ARG B 206 SSBOND 1 CYS A 1 CYS B 122 1555 1555 2.65 SSBOND 2 CYS B 42 CYS B 58 1555 1555 2.56 SSBOND 3 CYS B 136 CYS B 201 1555 1555 2.52 SSBOND 4 CYS B 168 CYS B 182 1555 1555 2.53 SSBOND 5 CYS B 191 CYS B 220 1555 1555 2.55 LINK NE2 HIS B 57 C1 0QE C 307 1555 1555 1.47 LINK OG SER B 195 C LYK C 306 1555 1555 1.31 LINK C ASP C 305 N LYK C 306 1555 1555 1.32 LINK C LYK C 306 C1 0QE C 307 1555 1555 1.55 LINK OD2 ASP B 50 ZN ZN B 311 1555 1555 2.55 LINK OE2 GLU B 126 ZN ZN B 310 1555 1555 2.44 LINK ZN ZN B 311 O HOH B 479 1555 1555 2.66 SITE 1 AC1 3 GLU B 24 HIS B 71 GLU B 126 SITE 1 AC2 4 ASP B 50 GLU B 185 HIS B 243 HOH B 479 SITE 1 AC3 17 HIS B 57 LYS B 99 TYR B 174 ASP B 189 SITE 2 AC3 17 SER B 190 GLN B 192 GLY B 193 SER B 195 SITE 3 AC3 17 SER B 214 PHE B 215 GLY B 216 GLY B 226 SITE 4 AC3 17 HOH B 407 HOH B 438 HOH C 436 HOH C 445 SITE 5 AC3 17 HOH C 521 CRYST1 39.990 70.650 85.220 90.00 90.00 90.00 P 21 21 21 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 0.025006 0.000000 0.000000 0.00000 SCALE2 0.000000 0.014154 0.000000 0.00000 SCALE3 0.000000 0.000000 0.011734 0.00000