The beta-lactamases of Gram-negative bacteria.
D003227:Conjugation, Genetic; D004352:Drug Resistance, Microbial; D004755:Enterobacteriaceae / Q000201:enzymology*; D005796:Genes; D010405:Penicillinase / Q000032:analysis*; D011549:Pseudomonas / Q000201:enzymology*
D010405:Penicillinase