1887

Abstract

The mechanism of resistance to chloramphenicol specified by 18 plasmids from Gram-negative bacteria representing different incompatibility groups was investigated. Most determined the drug-inactivating enzyme chloramphenicol acetyltransferase. The enzymes were purified and their properties were compared with those of the previously characterized enzyme types specified by R429 (type I), s-a (type II) and R387 (type III). The type I enzyme was determined by plasmids representing incompatibility groups FII, C, S, I, H, L, O and Com9. Plasmids from incompatibility groups K, I and the A–C complex specified the type III enzyme, while elements representing incompatibility groups V and W determined the type II variant.

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/content/journal/micro/10.1099/00221287-109-2-351
1978-12-01
2024-04-25
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