HEADER HYDROLASE 17-MAR-25 9NT0 TITLE OXA-23-MEROPENEM, PH 7.5 COMPND MOL_ID: 1; COMPND 2 MOLECULE: BETA-LACTAMASE OXA-23; COMPND 3 CHAIN: A; COMPND 4 EC: 3.5.2.6; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ACINETOBACTER BAUMANNII; SOURCE 3 ORGANISM_TAXID: 470; SOURCE 4 GENE: OXA-23, ARI-1, BLA-OXA-23, BLA_2, BLA_3, BLAOXA, BLAOXA-23, SOURCE 5 ABUW_0563; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS OXA, ANTIBIOTIC RESISTANCE, INHIBITOR, MEROPENEM, HYDROLASE EXPDTA X-RAY DIFFRACTION AUTHOR C.A.SMITH,M.TOTH,N.K.STEWART,S.B.VAKULENKO REVDAT 3 15-OCT-25 9NT0 1 JRNL REVDAT 2 03-SEP-25 9NT0 1 JRNL REVDAT 1 06-AUG-25 9NT0 0 JRNL AUTH M.TOTH,N.K.STEWART,P.QUAN,M.M.K.KHAN,J.COX,J.D.BUYNAK, JRNL AUTH 2 C.A.SMITH,S.B.VAKULENKO JRNL TITL DUAL MECHANISM OF THE OXA-23 CARBAPENEMASE INHIBITION BY THE JRNL TITL 2 CARBAPENEM NA-1-157. JRNL REF ANTIMICROB.AGENTS CHEMOTHER. V. 69 91825 2025 JRNL REFN ESSN 1098-6596 JRNL PMID 40833279 JRNL DOI 10.1128/AAC.00918-25 REMARK 2 REMARK 2 RESOLUTION. 1.60 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX (1.21.2_5419: ???) REMARK 3 AUTHORS : PAUL ADAMS,PAVEL AFONINE,VINCENT CHEN,IAN REMARK 3 : DAVIS,KRESHNA GOPAL,RALF GROSSE-KUNSTLEVE, REMARK 3 : LI-WEI HUNG,ROBERT IMMORMINO,TOM IOERGER, REMARK 3 : AIRLIE MCCOY,ERIK MCKEE,NIGEL MORIARTY, REMARK 3 : REETAL PAI,RANDY READ,JANE RICHARDSON, REMARK 3 : DAVID RICHARDSON,TOD ROMO,JIM SACCHETTINI, REMARK 3 : NICHOLAS SAUTER,JACOB SMITH,LAURENT REMARK 3 : STORONI,TOM TERWILLIGER,PETER ZWART REMARK 3 REMARK 3 REFINEMENT TARGET : ML REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.60 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 37.87 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.360 REMARK 3 COMPLETENESS FOR RANGE (%) : 99.9 REMARK 3 NUMBER OF REFLECTIONS : 39822 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.169 REMARK 3 R VALUE (WORKING SET) : 0.167 REMARK 3 FREE R VALUE : 0.202 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 4.890 REMARK 3 FREE R VALUE TEST SET COUNT : 1949 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT (IN BINS). REMARK 3 BIN RESOLUTION RANGE COMPL. NWORK NFREE RWORK RFREE REMARK 3 1 37.8700 - 3.8600 1.00 2941 133 0.1574 0.1840 REMARK 3 2 3.8500 - 3.0600 1.00 2789 130 0.1571 0.1851 REMARK 3 3 3.0600 - 2.6700 1.00 2693 179 0.1698 0.2069 REMARK 3 4 2.6700 - 2.4300 1.00 2727 126 0.1682 0.1837 REMARK 3 5 2.4300 - 2.2600 1.00 2706 141 0.1635 0.2093 REMARK 3 6 2.2600 - 2.1200 1.00 2709 124 0.1606 0.2001 REMARK 3 7 2.1200 - 2.0200 1.00 2669 146 0.1604 0.2277 REMARK 3 8 2.0200 - 1.9300 1.00 2636 177 0.1692 0.2060 REMARK 3 9 1.9300 - 1.8500 1.00 2669 137 0.1935 0.2233 REMARK 3 10 1.8500 - 1.7900 1.00 2668 157 0.1925 0.2555 REMARK 3 11 1.7900 - 1.7300 1.00 2641 146 0.1887 0.2355 REMARK 3 12 1.7300 - 1.6800 1.00 2678 141 0.2052 0.2585 REMARK 3 13 1.6800 - 1.6400 1.00 2695 93 0.2307 0.2388 REMARK 3 14 1.6400 - 1.6000 0.99 2652 119 0.2733 0.3179 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : FLAT BULK SOLVENT MODEL REMARK 3 SOLVENT RADIUS : 1.10 REMARK 3 SHRINKAGE RADIUS : 0.90 REMARK 3 K_SOL : NULL REMARK 3 B_SOL : NULL REMARK 3 REMARK 3 ERROR ESTIMATES. REMARK 3 COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED) : 0.180 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 19.600 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : NULL 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 TWINNING INFORMATION. REMARK 3 FRACTION: NULL REMARK 3 OPERATOR: NULL REMARK 3 REMARK 3 DEVIATIONS FROM IDEAL VALUES. REMARK 3 RMSD COUNT REMARK 3 BOND : 0.014 2089 REMARK 3 ANGLE : 1.419 2840 REMARK 3 CHIRALITY : 0.091 318 REMARK 3 PLANARITY : 0.009 366 REMARK 3 DIHEDRAL : 19.770 811 REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : 4 REMARK 3 TLS GROUP : 1 REMARK 3 SELECTION: CHAIN 'A' AND (RESID 28 THROUGH 72 ) REMARK 3 ORIGIN FOR THE GROUP (A): -14.9505 -21.5987 -1.8017 REMARK 3 T TENSOR REMARK 3 T11: 0.2386 T22: 0.2423 REMARK 3 T33: 0.2298 T12: -0.0065 REMARK 3 T13: 0.0008 T23: -0.0325 REMARK 3 L TENSOR REMARK 3 L11: 1.2408 L22: 0.8739 REMARK 3 L33: 1.6630 L12: -0.4345 REMARK 3 L13: -1.2272 L23: -0.1426 REMARK 3 S TENSOR REMARK 3 S11: 0.1325 S12: -0.1122 S13: 0.2025 REMARK 3 S21: 0.2010 S22: 0.1888 S23: 0.0606 REMARK 3 S31: 0.1289 S32: 0.2389 S33: 0.0058 REMARK 3 TLS GROUP : 2 REMARK 3 SELECTION: CHAIN 'A' AND (RESID 73 THROUGH 138 ) REMARK 3 ORIGIN FOR THE GROUP (A): 6.8209 -27.3648 -25.2426 REMARK 3 T TENSOR REMARK 3 T11: 0.1662 T22: 0.2443 REMARK 3 T33: 0.1989 T12: -0.0225 REMARK 3 T13: 0.0420 T23: 0.0482 REMARK 3 L TENSOR REMARK 3 L11: 2.3167 L22: 1.3234 REMARK 3 L33: 0.7026 L12: -0.3235 REMARK 3 L13: -0.4363 L23: 0.2534 REMARK 3 S TENSOR REMARK 3 S11: -0.0125 S12: 0.2870 S13: -0.0016 REMARK 3 S21: -0.0412 S22: -0.0114 S23: -0.1992 REMARK 3 S31: 0.0029 S32: 0.0578 S33: 0.0021 REMARK 3 TLS GROUP : 3 REMARK 3 SELECTION: CHAIN 'A' AND (RESID 139 THROUGH 208 ) REMARK 3 ORIGIN FOR THE GROUP (A): -5.5113 -23.6178 -26.1285 REMARK 3 T TENSOR REMARK 3 T11: 0.1574 T22: 0.2638 REMARK 3 T33: 0.1833 T12: 0.0078 REMARK 3 T13: 0.0076 T23: 0.0681 REMARK 3 L TENSOR REMARK 3 L11: 2.4929 L22: 1.6278 REMARK 3 L33: 2.0747 L12: 0.1718 REMARK 3 L13: -0.5541 L23: 0.0510 REMARK 3 S TENSOR REMARK 3 S11: 0.0479 S12: 0.4416 S13: 0.2042 REMARK 3 S21: -0.1834 S22: -0.0108 S23: -0.0148 REMARK 3 S31: -0.0690 S32: -0.1323 S33: 0.0013 REMARK 3 TLS GROUP : 4 REMARK 3 SELECTION: CHAIN 'A' AND (RESID 209 THROUGH 273 ) REMARK 3 ORIGIN FOR THE GROUP (A): -5.7235 -27.5135 -9.0921 REMARK 3 T TENSOR REMARK 3 T11: 0.1821 T22: 0.2290 REMARK 3 T33: 0.1499 T12: 0.0269 REMARK 3 T13: -0.0279 T23: 0.0058 REMARK 3 L TENSOR REMARK 3 L11: 1.6903 L22: 0.9567 REMARK 3 L33: 2.1590 L12: -1.2005 REMARK 3 L13: -0.8407 L23: 0.3916 REMARK 3 S TENSOR REMARK 3 S11: -0.0643 S12: -0.1974 S13: 0.0411 REMARK 3 S21: 0.1539 S22: 0.0558 S23: -0.2319 REMARK 3 S31: 0.1528 S32: 0.2374 S33: -0.0023 REMARK 3 REMARK 3 NCS DETAILS REMARK 3 NUMBER OF NCS GROUPS : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 9NT0 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 18-MAR-25. REMARK 100 THE DEPOSITION ID IS D_1000294192. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 30-JAN-25 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SSRL REMARK 200 BEAMLINE : BL9-2 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.97946 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : PIXEL REMARK 200 DETECTOR MANUFACTURER : DECTRIS EIGER X 16M REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XDS REMARK 200 DATA SCALING SOFTWARE : AIMLESS REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 39875 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.600 REMARK 200 RESOLUTION RANGE LOW (A) : 37.870 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 100.0 REMARK 200 DATA REDUNDANCY : 20.70 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 20.7000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.60 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.63 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 FOR SHELL : 1.700 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: FOURIER SYNTHESIS REMARK 200 SOFTWARE USED: REFMAC REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 47.88 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.36 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 0.2 M LITHIUM SULFATE, 0.1 M HEPES, PH REMARK 280 7.5, 25% PEG3350, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 277K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 42 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 -Y+1/2,X+1/2,Z+1/2 REMARK 290 4555 Y+1/2,-X+1/2,Z+1/2 REMARK 290 5555 -X+1/2,Y+1/2,-Z+1/2 REMARK 290 6555 X+1/2,-Y+1/2,-Z+1/2 REMARK 290 7555 Y,X,-Z REMARK 290 8555 -Y,-X,-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 0.000000 -1.000000 0.000000 41.49550 REMARK 290 SMTRY2 3 1.000000 0.000000 0.000000 41.49550 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 42.56400 REMARK 290 SMTRY1 4 0.000000 1.000000 0.000000 41.49550 REMARK 290 SMTRY2 4 -1.000000 0.000000 0.000000 41.49550 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 42.56400 REMARK 290 SMTRY1 5 -1.000000 0.000000 0.000000 41.49550 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 41.49550 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 42.56400 REMARK 290 SMTRY1 6 1.000000 0.000000 0.000000 41.49550 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 41.49550 REMARK 290 SMTRY3 6 0.000000 0.000000 -1.000000 42.56400 REMARK 290 SMTRY1 7 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 7 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 8 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY2 8 -1.000000 0.000000 0.000000 0.00000 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 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 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 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 A 534 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 MET A 1 REMARK 465 ASN A 2 REMARK 465 LYS A 3 REMARK 465 TYR A 4 REMARK 465 PHE A 5 REMARK 465 THR A 6 REMARK 465 CYS A 7 REMARK 465 TYR A 8 REMARK 465 VAL A 9 REMARK 465 VAL A 10 REMARK 465 ALA A 11 REMARK 465 SER A 12 REMARK 465 LEU A 13 REMARK 465 PHE A 14 REMARK 465 LEU A 15 REMARK 465 SER A 16 REMARK 465 GLY A 17 REMARK 465 CYS A 18 REMARK 465 THR A 19 REMARK 465 VAL A 20 REMARK 465 GLN A 21 REMARK 465 HIS A 22 REMARK 465 ASN A 23 REMARK 465 LEU A 24 REMARK 465 ILE A 25 REMARK 465 ASN A 26 REMARK 465 GLU A 27 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 78 -138.58 48.72 REMARK 500 ASN A 163 14.36 -152.84 REMARK 500 REMARK 500 REMARK: NULL DBREF 9NT0 A 1 273 UNP Q9L4P2 BLO23_ACIBA 1 273 SEQRES 1 A 273 MET ASN LYS TYR PHE THR CYS TYR VAL VAL ALA SER LEU SEQRES 2 A 273 PHE LEU SER GLY CYS THR VAL GLN HIS ASN LEU ILE ASN SEQRES 3 A 273 GLU THR PRO SER GLN ILE VAL GLN GLY HIS ASN GLN VAL SEQRES 4 A 273 ILE HIS GLN TYR PHE ASP GLU LYS ASN THR SER GLY VAL SEQRES 5 A 273 LEU VAL ILE GLN THR ASP LYS LYS ILE ASN LEU TYR GLY SEQRES 6 A 273 ASN ALA LEU SER ARG ALA ASN THR GLU TYR VAL PRO ALA SEQRES 7 A 273 SER THR PHE KCX MET LEU ASN ALA LEU ILE GLY LEU GLU SEQRES 8 A 273 ASN GLN LYS THR ASP ILE ASN GLU ILE PHE LYS TRP LYS SEQRES 9 A 273 GLY GLU LYS ARG SER PHE THR ALA TRP GLU LYS ASP MET SEQRES 10 A 273 THR LEU GLY GLU ALA MET LYS LEU SER ALA VAL PRO VAL SEQRES 11 A 273 TYR GLN GLU LEU ALA ARG ARG ILE GLY LEU ASP LEU MET SEQRES 12 A 273 GLN LYS GLU VAL LYS ARG ILE GLY PHE GLY ASN ALA GLU SEQRES 13 A 273 ILE GLY GLN GLN VAL ASP ASN PHE TRP LEU VAL GLY PRO SEQRES 14 A 273 LEU LYS VAL THR PRO ILE GLN GLU VAL GLU PHE VAL SER SEQRES 15 A 273 GLN LEU ALA HIS THR GLN LEU PRO PHE SER GLU LYS VAL SEQRES 16 A 273 GLN ALA ASN VAL LYS ASN MET LEU LEU LEU GLU GLU SER SEQRES 17 A 273 ASN GLY TYR LYS ILE PHE GLY LYS THR GLY TRP ALA MET SEQRES 18 A 273 ASP ILE LYS PRO GLN VAL GLY TRP LEU THR GLY TRP VAL SEQRES 19 A 273 GLU GLN PRO ASP GLY LYS ILE VAL ALA PHE ALA LEU ASN SEQRES 20 A 273 MET GLU MET ARG SER GLU MET PRO ALA SER ILE ARG ASN SEQRES 21 A 273 GLU LEU LEU MET LYS SER LEU LYS GLN LEU ASN ILE ILE MODRES 9NT0 KCX A 82 LYS MODIFIED RESIDUE HET KCX A 82 12 HET MER A 301 26 HET SO4 A 302 5 HETNAM KCX LYSINE NZ-CARBOXYLIC ACID HETNAM MER (4R,5S)-3-{[(3S,5S)-5-(DIMETHYLCARBAMOYL)PYRROLIDIN-3- HETNAM 2 MER YL]SULFANYL}-5-[(2S,3R)-3-HYDROXY-1-OXOBUTAN-2-YL]-4- HETNAM 3 MER METHYL-4,5-D IHYDRO-1H-PYRROLE-2-CARBOXYLIC ACID HETNAM SO4 SULFATE ION HETSYN MER MEROPENEM, BOUND FORM FORMUL 1 KCX C7 H14 N2 O4 FORMUL 2 MER C17 H27 N3 O5 S FORMUL 3 SO4 O4 S 2- FORMUL 4 HOH *135(H2 O) HELIX 1 AA1 GLY A 35 GLU A 46 1 12 HELIX 2 AA2 ALA A 67 THR A 73 5 7 HELIX 3 AA3 PRO A 77 THR A 80 5 4 HELIX 4 AA4 PHE A 81 ASN A 92 1 12 HELIX 5 AA5 PHE A 110 GLU A 114 5 5 HELIX 6 AA6 THR A 118 SER A 126 1 9 HELIX 7 AA7 ALA A 127 GLY A 139 1 13 HELIX 8 AA8 GLY A 139 GLY A 151 1 13 HELIX 9 AA9 THR A 173 HIS A 186 1 14 HELIX 10 AB1 SER A 192 LEU A 203 1 12 HELIX 11 AB2 SER A 257 LEU A 270 1 14 SHEET 1 AA1 6 LYS A 60 GLY A 65 0 SHEET 2 AA1 6 GLY A 51 THR A 57 -1 N LEU A 53 O TYR A 64 SHEET 3 AA1 6 ILE A 241 MET A 250 -1 O ALA A 245 N VAL A 54 SHEET 4 AA1 6 GLN A 226 GLU A 235 -1 N GLY A 228 O MET A 248 SHEET 5 AA1 6 TYR A 211 ALA A 220 -1 N PHE A 214 O TRP A 233 SHEET 6 AA1 6 LEU A 204 SER A 208 -1 N LEU A 205 O ILE A 213 LINK OG SER A 79 C1 MER A 301 1555 1555 1.43 LINK C PHE A 81 N KCX A 82 1555 1555 1.33 LINK C KCX A 82 N MET A 83 1555 1555 1.34 CISPEP 1 GLY A 168 PRO A 169 0 10.22 CISPEP 2 LYS A 224 PRO A 225 0 -4.29 CRYST1 82.991 82.991 85.128 90.00 90.00 90.00 P 42 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 0.012049 0.000000 0.000000 0.00000 SCALE2 0.000000 0.012049 0.000000 0.00000 SCALE3 0.000000 0.000000 0.011747 0.00000 CONECT 417 2013 CONECT 427 436 CONECT 436 427 437 CONECT 437 436 438 443 CONECT 438 437 439 CONECT 439 438 440 CONECT 440 439 441 CONECT 441 440 442 CONECT 442 441 445 CONECT 443 437 444 448 CONECT 444 443 CONECT 445 442 446 447 CONECT 446 445 CONECT 447 445 CONECT 448 443 CONECT 2013 417 2015 2018 CONECT 2014 2017 2026 2030 CONECT 2015 2013 2016 2019 CONECT 2016 2015 2022 2030 CONECT 2017 2014 2022 2023 CONECT 2018 2013 CONECT 2019 2015 2020 2021 CONECT 2020 2019 CONECT 2021 2019 CONECT 2022 2016 2017 CONECT 2023 2017 2024 2025 CONECT 2024 2023 CONECT 2025 2023 CONECT 2026 2014 2027 CONECT 2027 2026 2028 2033 CONECT 2028 2027 2029 CONECT 2029 2028 2031 2034 CONECT 2030 2014 2016 2032 CONECT 2031 2029 2033 CONECT 2032 2030 CONECT 2033 2027 2031 CONECT 2034 2029 2035 2036 CONECT 2035 2034 2037 2038 CONECT 2036 2034 CONECT 2037 2035 CONECT 2038 2035 CONECT 2039 2040 2041 2042 2043 CONECT 2040 2039 CONECT 2041 2039 CONECT 2042 2039 CONECT 2043 2039 MASTER 337 0 3 11 6 0 0 6 2132 1 46 21 END