1K38 - Header Asymmetric Unit

HEADER HYDROLASE 02-OCT-01 1K38

TITLE CRYSTAL STRUCTURE OF THE CLASS D BETA-LACTAMASE OXA-2

COMPND MOL_ID: 1; COMPND 2 MOLECULE: BETA-LACTAMASE OXA-2; COMPND 3 CHAIN: A, B; COMPND 4 SYNONYM: PENICILLINASE; COMPND 5 EC: 3.5.2.6; COMPND 6 ENGINEERED: YES

SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SALMONELLA TYPHIMURIUM; SOURCE 3 ORGANISM_TAXID: 602; SOURCE 4 GENE: OXA-2; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: JM105; SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: PDML303

KEYWDS SERINE BETA-LACTAMASE, HYDROLASE, ANTIBIOTIC RESISTANCE, KEYWDS 2 CARBAMYLATED LYSINE

EXPDTA X-RAY DIFFRACTION

AUTHOR F.KERFF,E.FONZE,F.BOUILLENNE,J.M.FRERE,P.CHARLIER

REVDAT 2 24-FEB-09 1K38 1 VERSN REVDAT 1 24-JUN-03 1K38 0

JRNL AUTH F.KERFF,E.FONZE,F.BOUILLENNE,J.M.FRERE,P.CHARLIER JRNL TITL CRYSTAL STRUCTURE OF THE CLASS D BETA-LACTAMASE JRNL TITL 2 OXA-2 JRNL REF TO BE PUBLISHED JRNL REFN

REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH P.LEDENT,J.M.FRERE REMARK 1 TITL SUBSTRATE INACTIVATION OF THE OXA2 BETA-LACTAMASE REMARK 1 REF BIOCHEM.J. V. 295 871 1993 REMARK 1 REFN ISSN 0264-6021 REMARK 1 REFERENCE 2 REMARK 1 AUTH P.LEDENT,X.RAQUET,B.JORIS,J.VAN BEUMEN,J.M.FRERE REMARK 1 TITL A COMPARATIVE STUDY OF CLASS-D BETA-LACTAMASE REMARK 1 REF BIOCHEM.J. V. 292 555 1993 REMARK 1 REFN ISSN 0264-6021

REMARK 2 REMARK 2 RESOLUTION. 1.50 ANGSTROMS.

REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 1.0 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 : ENGH & HUBER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.50 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 25.08 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 2683187.980 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 92.4 REMARK 3 NUMBER OF REFLECTIONS : 80903 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) : 0.198 REMARK 3 FREE R VALUE : 0.211 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.000 REMARK 3 FREE R VALUE TEST SET COUNT : 8115 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.002 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 10 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 1.50 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.55 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 74.50 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 5830 REMARK 3 BIN R VALUE (WORKING SET) : 0.2870 REMARK 3 BIN FREE R VALUE : 0.3350 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 9.80 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 630 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.013 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 3949 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 0 REMARK 3 SOLVENT ATOMS : 323 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 19.10 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 22.10 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 0.60000 REMARK 3 B22 (A**2) : 4.93000 REMARK 3 B33 (A**2) : -5.53000 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : 0.00000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.18 REMARK 3 ESD FROM SIGMAA (A) : 0.17 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) : 0.19 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.21 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.005 REMARK 3 BOND ANGLES (DEGREES) : 1.20 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 21.90 REMARK 3 IMPROPER ANGLES (DEGREES) : 0.81 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) : 1.160 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 1.850 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 1.840 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 2.740 ; 2.500 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.39 REMARK 3 BSOL : 45.30 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_PSE.PARAM REMARK 3 PARAMETER FILE 2 : ION.PARAM REMARK 3 PARAMETER FILE 3 : WATER_REP.PARAM REMARK 3 PARAMETER FILE 4 : FMT.PARAM REMARK 3 PARAMETER FILE 5 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN-PSE.TOP REMARK 3 TOPOLOGY FILE 2 : ION.TOP REMARK 3 TOPOLOGY FILE 3 : WATER.TOP REMARK 3 TOPOLOGY FILE 4 : FMT.TOP REMARK 3 TOPOLOGY FILE 5 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL

REMARK 4 REMARK 4 1K38 COMPLIES WITH FORMAT V. 3.15, 01-DEC-08

REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 03-OCT-01. REMARK 100 THE RCSB ID CODE IS RCSB014504.

REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 07-JUN-00 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 9 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : ESRF REMARK 200 BEAMLINE : BM14 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.0 REMARK 200 MONOCHROMATOR : SI 111 CHANNEL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : MOSFLM REMARK 200 DATA SCALING SOFTWARE : CCP4 (SCALA) REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 86412 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.450 REMARK 200 RESOLUTION RANGE LOW (A) : 25.080 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 89.4 REMARK 200 DATA REDUNDANCY : 5.400 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : 0.04400 REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 10.4000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.45 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.49 REMARK 200 COMPLETENESS FOR SHELL (%) : 50.7 REMARK 200 DATA REDUNDANCY IN SHELL : 2.10 REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : 0.29700 REMARK 200 <I/SIGMA(I)> FOR SHELL : 2.000 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 1K4F, STRUCTURE OF OXA-10 REMARK 200 REMARK 200 REMARK: NULL

REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 46.84 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.31 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: SODIUM FORMATE, BICINE, PH 9, VAPOR REMARK 280 DIFFUSION, HANGING DROP, TEMPERATURE 293K

REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 2 2 21 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,-Y,Z+1/2 REMARK 290 3555 -X,Y,-Z+1/2 REMARK 290 4555 X,-Y,-Z REMARK 290 5555 X+1/2,Y+1/2,Z REMARK 290 6555 -X+1/2,-Y+1/2,Z+1/2 REMARK 290 7555 -X+1/2,Y+1/2,-Z+1/2 REMARK 290 8555 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 64.58400 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 64.58400 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 5 1.000000 0.000000 0.000000 39.48950 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 53.44950 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 6 -1.000000 0.000000 0.000000 39.48950 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 53.44950 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 64.58400 REMARK 290 SMTRY1 7 -1.000000 0.000000 0.000000 39.48950 REMARK 290 SMTRY2 7 0.000000 1.000000 0.000000 53.44950 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 64.58400 REMARK 290 SMTRY1 8 1.000000 0.000000 0.000000 39.48950 REMARK 290 SMTRY2 8 0.000000 -1.000000 0.000000 53.44950 REMARK 290 SMTRY3 8 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: THE BIOLOGICAL ASSEMBLY IS A MONOMER OR A DIMER REMARK 300 DEPENDING ON CONDITIONS

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: DIMERIC 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 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 543 LIES ON A SPECIAL POSITION.

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 17 REMARK 465 GLU A 18 REMARK 465 GLY A 19 REMARK 465 SER A 149 REMARK 465 ASN A 150 REMARK 465 ASN A 261 REMARK 465 PRO A 262 REMARK 465 ALA A 263 REMARK 465 VAL A 264 REMARK 465 ASN A 265 REMARK 465 SER A 266 REMARK 465 ASP A 267 REMARK 465 ALA A 268 REMARK 465 ALA A 269 REMARK 465 ARG A 270 REMARK 465 GLN B 17 REMARK 465 GLU B 18 REMARK 465 GLY B 19 REMARK 465 PHE B 99 REMARK 465 ALA B 100 REMARK 465 GLY B 101 REMARK 465 SER B 149 REMARK 465 ASN B 150 REMARK 465 GLY B 151 REMARK 465 ASN B 261 REMARK 465 PRO B 262 REMARK 465 ALA B 263 REMARK 465 VAL B 264 REMARK 465 ASN B 265 REMARK 465 SER B 266 REMARK 465 ASP B 267 REMARK 465 ALA B 268 REMARK 465 ALA B 269 REMARK 465 ARG B 270

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 A 23 72.09 -114.00 REMARK 500 GLN A 34 56.20 39.87 REMARK 500 ASP A 55 72.53 62.91 REMARK 500 ALA A 66 -143.53 54.56 REMARK 500 ASP A 85 -167.20 -164.06 REMARK 500 GLN A 104 164.24 179.92 REMARK 500 ARG A 237 -123.02 51.33 REMARK 500 ASP B 48 70.38 51.70 REMARK 500 ASP B 55 73.78 63.59 REMARK 500 ALA B 66 -144.45 53.98 REMARK 500 ASP B 85 -168.38 -160.08 REMARK 500 ARG B 237 -125.03 57.53 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 A 525 DISTANCE = 5.83 ANGSTROMS REMARK 525 HOH B 549 DISTANCE = 7.52 ANGSTROMS

REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE FMT A 401 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE FMT B 402 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE FMT B 403

DBREF 1K38 A 17 270 UNP P0A1V8 BLO2_SALTY 22 275 DBREF 1K38 B 17 270 UNP P0A1V8 BLO2_SALTY 22 275

SEQADV 1K38 KCX A 70 UNP P0A1V8 LYS 75 MODIFIED RESIDUE SEQADV 1K38 KCX B 70 UNP P0A1V8 LYS 75 MODIFIED RESIDUE

SEQRES 1 A 254 GLN GLU GLY THR LEU GLU ARG SER ASP TRP ARG LYS PHE SEQRES 2 A 254 PHE SER GLU PHE GLN ALA LYS GLY THR ILE VAL VAL ALA SEQRES 3 A 254 ASP GLU ARG GLN ALA ASP ARG ALA MET LEU VAL PHE ASP SEQRES 4 A 254 PRO VAL ARG SER LYS LYS ARG TYR SER PRO ALA SER THR SEQRES 5 A 254 PHE KCX ILE PRO HIS THR LEU PHE ALA LEU ASP ALA GLY SEQRES 6 A 254 ALA VAL ARG ASP GLU PHE GLN ILE PHE ARG TRP ASP GLY SEQRES 7 A 254 VAL ASN ARG GLY PHE ALA GLY HIS ASN GLN ASP GLN ASP SEQRES 8 A 254 LEU ARG SER ALA MET ARG ASN SER THR VAL TRP VAL TYR SEQRES 9 A 254 GLU LEU PHE ALA LYS GLU ILE GLY ASP ASP LYS ALA ARG SEQRES 10 A 254 ARG TYR LEU LYS LYS ILE ASP TYR GLY ASN ALA ASP PRO SEQRES 11 A 254 SER THR SER ASN GLY ASP TYR TRP ILE GLU GLY SER LEU SEQRES 12 A 254 ALA ILE SER ALA GLN GLU GLN ILE ALA PHE LEU ARG LYS SEQRES 13 A 254 LEU TYR ARG ASN GLU LEU PRO PHE ARG VAL GLU HIS GLN SEQRES 14 A 254 ARG LEU VAL LYS ASP LEU MET ILE VAL GLU ALA GLY ARG SEQRES 15 A 254 ASN TRP ILE LEU ARG ALA LYS THR GLY TRP GLU GLY ARG SEQRES 16 A 254 MET GLY TRP TRP VAL GLY TRP VAL GLU TRP PRO THR GLY SEQRES 17 A 254 SER VAL PHE PHE ALA LEU ASN ILE ASP THR PRO ASN ARG SEQRES 18 A 254 MET ASP ASP LEU PHE LYS ARG GLU ALA ILE VAL ARG ALA SEQRES 19 A 254 ILE LEU ARG SER ILE GLU ALA LEU PRO PRO ASN PRO ALA SEQRES 20 A 254 VAL ASN SER ASP ALA ALA ARG SEQRES 1 B 254 GLN GLU GLY THR LEU GLU ARG SER ASP TRP ARG LYS PHE SEQRES 2 B 254 PHE SER GLU PHE GLN ALA LYS GLY THR ILE VAL VAL ALA SEQRES 3 B 254 ASP GLU ARG GLN ALA ASP ARG ALA MET LEU VAL PHE ASP SEQRES 4 B 254 PRO VAL ARG SER LYS LYS ARG TYR SER PRO ALA SER THR SEQRES 5 B 254 PHE KCX ILE PRO HIS THR LEU PHE ALA LEU ASP ALA GLY SEQRES 6 B 254 ALA VAL ARG ASP GLU PHE GLN ILE PHE ARG TRP ASP GLY SEQRES 7 B 254 VAL ASN ARG GLY PHE ALA GLY HIS ASN GLN ASP GLN ASP SEQRES 8 B 254 LEU ARG SER ALA MET ARG ASN SER THR VAL TRP VAL TYR SEQRES 9 B 254 GLU LEU PHE ALA LYS GLU ILE GLY ASP ASP LYS ALA ARG SEQRES 10 B 254 ARG TYR LEU LYS LYS ILE ASP TYR GLY ASN ALA ASP PRO SEQRES 11 B 254 SER THR SER ASN GLY ASP TYR TRP ILE GLU GLY SER LEU SEQRES 12 B 254 ALA ILE SER ALA GLN GLU GLN ILE ALA PHE LEU ARG LYS SEQRES 13 B 254 LEU TYR ARG ASN GLU LEU PRO PHE ARG VAL GLU HIS GLN SEQRES 14 B 254 ARG LEU VAL LYS ASP LEU MET ILE VAL GLU ALA GLY ARG SEQRES 15 B 254 ASN TRP ILE LEU ARG ALA LYS THR GLY TRP GLU GLY ARG SEQRES 16 B 254 MET GLY TRP TRP VAL GLY TRP VAL GLU TRP PRO THR GLY SEQRES 17 B 254 SER VAL PHE PHE ALA LEU ASN ILE ASP THR PRO ASN ARG SEQRES 18 B 254 MET ASP ASP LEU PHE LYS ARG GLU ALA ILE VAL ARG ALA SEQRES 19 B 254 ILE LEU ARG SER ILE GLU ALA LEU PRO PRO ASN PRO ALA SEQRES 20 B 254 VAL ASN SER ASP ALA ALA ARG

MODRES 1K38 KCX A 70 LYS LYSINE NZ-CARBOXYLIC ACID MODRES 1K38 KCX B 70 LYS LYSINE NZ-CARBOXYLIC ACID

HET KCX A 70 12 HET KCX B 70 12 HET FMT A 401 3 HET FMT B 402 3 HET FMT B 403 3

HETNAM KCX LYSINE NZ-CARBOXYLIC ACID HETNAM FMT FORMIC ACID

FORMUL 1 KCX 2(C7 H14 N2 O4) FORMUL 3 FMT 3(C H2 O2) FORMUL 6 HOH *314(H2 O)

HELIX 1 1 TRP A 26 PHE A 33 1 8 HELIX 2 2 ASP A 55 LYS A 60 1 6 HELIX 3 3 PRO A 65 THR A 68 5 4 HELIX 4 4 PHE A 69 ALA A 80 1 12 HELIX 5 5 ASP A 107 ASN A 114 1 8 HELIX 6 6 THR A 116 GLY A 128 1 13 HELIX 7 7 GLY A 128 ILE A 139 1 12 HELIX 8 8 SER A 162 ARG A 175 1 14 HELIX 9 9 ARG A 181 MET A 192 1 12 HELIX 10 10 ASN A 236 LEU A 241 5 6 HELIX 11 11 PHE A 242 ILE A 255 1 14 HELIX 12 12 TRP B 26 PHE B 33 1 8 HELIX 13 13 ASP B 55 LYS B 60 1 6 HELIX 14 14 PRO B 65 THR B 68 5 4 HELIX 15 15 PHE B 69 ALA B 80 1 12 HELIX 16 16 ASP B 107 SER B 115 1 9 HELIX 17 17 THR B 116 GLY B 128 1 13 HELIX 18 18 GLY B 128 ILE B 139 1 12 HELIX 19 19 ASP B 152 GLY B 157 1 6 HELIX 20 20 SER B 162 ARG B 175 1 14 HELIX 21 21 ARG B 181 MET B 192 1 12 HELIX 22 22 ASN B 236 LEU B 241 5 6 HELIX 23 23 PHE B 242 ILE B 255 1 14

SHEET 1 A 7 LEU A 21 GLU A 22 0 SHEET 2 A 7 LEU A 52 PHE A 54 1 O VAL A 53 N LEU A 21 SHEET 3 A 7 GLY A 37 ASP A 43 -1 N VAL A 41 O LEU A 52 SHEET 4 A 7 GLY A 224 ASP A 233 -1 O PHE A 227 N ALA A 42 SHEET 5 A 7 MET A 212 TRP A 221 -1 N GLY A 213 O ILE A 232 SHEET 6 A 7 TRP A 200 TRP A 208 -1 N ARG A 203 O TRP A 218 SHEET 7 A 7 ILE A 193 GLY A 197 -1 N GLU A 195 O LEU A 202 SHEET 1 B 7 LEU B 21 GLU B 22 0 SHEET 2 B 7 LEU B 52 PHE B 54 1 O VAL B 53 N LEU B 21 SHEET 3 B 7 GLY B 37 ASP B 43 -1 N VAL B 41 O LEU B 52 SHEET 4 B 7 GLY B 224 ASP B 233 -1 O PHE B 227 N ALA B 42 SHEET 5 B 7 MET B 212 TRP B 221 -1 N GLY B 217 O PHE B 228 SHEET 6 B 7 TRP B 200 TRP B 208 -1 N GLY B 207 O TRP B 214 SHEET 7 B 7 ILE B 193 GLY B 197 -1 N GLY B 197 O TRP B 200

LINK C PHE A 69 N KCX A 70 1555 1555 1.33 LINK C KCX A 70 N ILE A 71 1555 1555 1.33 LINK C PHE B 69 N KCX B 70 1555 1555 1.33 LINK C KCX B 70 N ILE B 71 1555 1555 1.33

SITE 1 AC1 6 SER A 115 THR A 206 GLY A 207 TRP A 208 SITE 2 AC1 6 ARG A 244 ASN B 96 SITE 1 AC2 5 ASN A 96 SER B 115 THR B 206 TRP B 208 SITE 2 AC2 5 ARG B 244 SITE 1 AC3 6 HOH A 479 PHE B 180 ARG B 181 HOH B 406 SITE 2 AC3 6 HOH B 429 HOH B 501

CRYST1 78.979 106.899 129.168 90.00 90.00 90.00 C 2 2 21 16

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 0.012662 0.000000 0.000000 0.00000

SCALE2 0.000000 0.009355 0.000000 0.00000

SCALE3 0.000000 0.000000 0.007742 0.00000