Beta-laktamaza (EC 3.5.2.6, penicilinaza, cefalosporinaza, neutrapen, penicilinska beta-laktamaza, eksopenicilinaza, ampicillinaza, penicilin amido-beta-laktamhidrolaza, penicilinaza I, II, beta-laktamaza I-III, beta-laktamaza A, B, C, beta-laktamaza AME I, cefalosporin-beta-laktamaza) je enzim sa sistematskim imenom beta-laktam hidrolaza.[1][2][3][4][5][6] Ovaj enzim katalizuje sledeću hemijsku reakciju

Beta-laktamaza
Metallo-beta-laktamaza L1 homotetramer, Stenotrophomonas maltophilia
Identifikatori
EC broj 3.5.2.6
CAS broj 9073-60-3
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB RCSB PDB PDBe PDBj PDBsum
beta-laktam + H2O supstituisana beta-aminokiselina

Ova grupa enzima ima promenljivu specifičnost hidrolize beta-laktama.

Reference uredi

  1. Citri, N. (1971). „Penicillinase and other β-lactamases”. u: Boyer, P.D.. The Enzymes. 4 (3rd izd.). New York: Academic Press. str. 23-46. 
  2. Hennessey, T.D. and Richmond, M.H. (1968). „The purification and some properties of a β-lactamase (cephalosporinase) synthesized by Enterobacter cloacae. Biochem. J. 109: 469-473. PMID 5685878. 
  3. Kuwabara, S. (1970). „Purification and properties of two extracellular β-lactamases from Bacillus cereus 569-H”. Biochem. J. 118: 457-465. PMID 4990588. 
  4. Pollock, M.R. (1960). „Penicillinase”. u: Boyer, P.D., Lardy, H. and Myrbäck, K.. The Enzymes. 4 (2nd izd.). New York: Academic Press. str. 269-278. 
  5. Pollock, M.R., Torriani, A.-M. and Tridgell, E.G. (1956). „Crystalline bacterial penicillinase”. Biochem. J. 62: 387-391. PMID 13303985. 
  6. Ross, G.W. and Boulton, M.G. (1973). „Purification of β-lactamases on QAE-sephadex”. Biochim. Biophys. Acta 309: 430-439. PMID 4731970. 

Literatura uredi

Литература uredi

  • Pollock, M.R. (1960). „Penicillinase”. u: Boyer, P.D., Lardy, H. and Myrbäck, K.. The Enzymes. 4 (2nd izd.). New York: Academic Press. str. 269-278. 
  • Citri, N. (1971). „Penicillinase and other β-lactamases”. u: Boyer, P.D.. The Enzymes. 4 (3rd izd.). New York: Academic Press. str. 23-46. 

Spoljašnje vezе uredi