title: Novel beta-lactamase from Branhamella catarrhalis.
abstract: A strain of Branhamella catarrhalis isolated from sputum was shown to be resistant to penicillin and ampicillin. This strain produced a beta-lactamase which has been judged to be a novel enzyme, on the basis of substrat profil, isoelectric point and location of genetic determinant.
mesh_terms: D000667:Ampicillin / Q000494:pharmacology; D007526:Isoelectric Point; D009346:Neisseriaceae / Q000187:drug effects / Q000201:enzymology*; D010403:Penicillin Resistance; D010405:Penicillinase / Q000235:genetics / Q000302:isolation & purification* / Q000378:metabolism; D010406:Penicillins / Q000494:pharmacology; D001618:beta-Lactamases / Q000302:isolation & purification*
chemical_list: D010406:Penicillins; D000667:Ampicillin; D010405:Penicillinase; D001618:beta-Lactamases