Sequences of beta-lactamase genes encoding CTX-M-1 (MEN-1) and CTX-M-2 and relationship of their amino acid sequences with those of other beta-lactamases.

od Bauernfeind, A, Stemplinger, I, Jungwirth, R, Ernst, S, Casellas, J M
Wydane 1996

Characterization of beta-lactamase gene blaPER-2, which encodes an extended-spectrum class A beta-lactamase.

od Bauernfeind, A, Stemplinger, I, Jungwirth, R, Mangold, P, Amann, S, Akalin, E, Anğ, O, Bal, C, Casellas, J M
Wydane 1996

Gene sequence and biochemical characterization of FOX-1 from Klebsiella pneumoniae, a new AmpC-type plasmid-mediated beta-lactamase with two molecular variants.

od Gonzalez Leiza, M, Perez-Diaz, J C, Ayala, J, Casellas, J M, Martinez-Beltran, J, Bush, K, Baquero, F
Wydane 1994