A Resistance-Nodulation-Cell Division Family Xenobiotic Efflux Pump in an Obligate Anaerobe, Porphyromonas gingivalis

A Resistance-Nodulation-Cell Division Family Xenobiotic Efflux Pump in an Obligate Anaerobe, Porphyromonas gingivalis
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专性厌氧菌牙龈卟啉单胞菌中的抗性结节细胞分裂家族异生物质流出泵

DOI:
10.1128/aac.46.10.3257-3260.2002
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发表时间:
2002
影响因子:
4.9
通讯作者:
F. Yoshimura
F. Yoshimura
中科院分区:
医学2区
文献类型:
--
作者:
T. Ikeda;F. Yoshimura

文献摘要

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摘要 牙龈卟啉单胞菌是一种革兰氏阴性专性厌氧菌,在假定的操纵子中含有大肠杆菌抗结节细胞分裂型多药输出基因 acrB 的两个同源物,以及膜融合蛋白基因 acrA 和外膜通道基因 tolC 的同源物。对一个或多个基因被破坏的突变体进行的 MIC 测定和积累测定表明,一个名为 xepCAB 的簇可以产生多种药物,包括利福平、嘌呤霉素和溴化乙锭。
ABSTRACT Porphyromonas gingivalis, a gram-negative obligate anaerobe, contains two homologs of an Escherichia coli resistance-nodulation-cell division-type multidrug exporter gene, acrB, in putative operons, together with homologs of membrane fusion protein gene acrA and outer membrane channel gene tolC. MIC determination and accumulation assays with mutants with disruptions of one or more genes showed that one cluster, named xepCAB, pumped out multiple agents including rifampin, puromycin, and ethidium bromide.