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TitleMutagenesis and structural analysis reveal the CTX-M beta-lactamase active site is optimized for cephalosporin catalysis and drug resistance.
Journal, issue, pagesJ. Biol. Chem., Vol. 299, Page 104630-104630, Year 2023
Publish dateJul 12, 2022 (structure data deposition date)
AuthorsLu, S. / Montoya, M. / Hu, L. / Neetu, N. / Sankaran, B. / Prasad, B.V.V. / Palzkill, T.
External linksJ. Biol. Chem. / PubMed:36963495
MethodsX-ray diffraction
Resolution1.36 - 1.67 Å
Structure data

PDB-8dod:
Beta-lactamase CTX-M-14 S130A
Method: X-RAY DIFFRACTION / Resolution: 1.61 Å

PDB-8doe:
Crystal Structure of CTX-M-14 N106A
Method: X-RAY DIFFRACTION / Resolution: 1.5 Å

PDB-8don:
Beta-lactamase CTX-M-14 T215A
Method: X-RAY DIFFRACTION / Resolution: 1.36 Å

PDB-8dp4:
Beta-lactamase CTX-M-14 T235A
Method: X-RAY DIFFRACTION / Resolution: 1.402 Å

PDB-8dpq:
Beta-lactamase CTX-M-14 N170A
Method: X-RAY DIFFRACTION / Resolution: 1.67 Å

PDB-8ela:
CTX-M-14 beta-lactamase mutant - N132A w MES
Method: X-RAY DIFFRACTION / Resolution: 1.5 Å

PDB-8elb:
CTX-M-14 beta-lactamase mutant- N132A
Method: X-RAY DIFFRACTION / Resolution: 1.5 Å

Chemicals

ChemComp-K:
Unknown entry

ChemComp-HOH:
WATER

ChemComp-PO4:
PHOSPHATE ION

ChemComp-EDO:
1,2-ETHANEDIOL

ChemComp-MES:
2-(N-MORPHOLINO)-ETHANESULFONIC ACID / pH buffer*YM

ChemComp-SO4:
SULFATE ION

ChemComp-ZN:
Unknown entry

ChemComp-CL:
Unknown entry

ChemComp-PEG:
DI(HYDROXYETHYL)ETHER

Source
  • escherichia coli (E. coli)
KeywordsHYDROLASE / Beta-lactamase / CTX-M-14 / mutation / B-lactam / antibiotic resistance / b-lactam antibiotic resistance / Beta-lactam / beta-lactamase antibiotic beta-lactam / beta-lactamase hydrolase antibiotic beta-lactam

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