Comamonas testosteroni antA encodes an antimonite-translocating P-type ATPase.

Comamonas testosteroni antA encodes an antimonite-translocating P-type ATPase.
复制标题

DOI:
10.1016/j.scitotenv.2020.142393
复制
发表时间:
2021-02-01
期刊:
The Science of the total environment
影响因子:
--
通讯作者:
Li M
Li M
中科院分区:
其他
文献类型:
--
作者:
An L;Luo X;Wu M;Feng L;Shi K;Wang G;Rosen BP;Li M

文献摘要

参考文献

被引文献

相似文献

锑和砷一样,是一种广泛存在于环境中的有毒类金属。最近发现了锑的微生物解毒作用。在这里,我们描述了一种新的细菌p1b型锑矿(Sb(III))-从采锑细菌Comamonas睾酮JL40转运atp酶,赋予对Sb(III)的抗性。在菌株JL40的比较蛋白质组学分析中,一个操纵子(蚂蚁操纵子)被Sb(III)上调。蚂蚁操纵子包括antR、antC和antA三个基因。AntR属于调控蚂蚁操纵子表达的金属调节蛋白ArsR/SmtB家族。AntA属于p型阳离子易位atp酶的P1B家族。它与P1B-1亚家族的其他成员既有相似之处,也有不同之处,似乎是我们命名为P1B-8的独特亚家族的第一个确定成员。在大肠杆菌AW3110 (Δars)中表达AntA使其对Sb(III)产生抗性,并降低Sb(III)的细胞内浓度,但不降低As(III)或其他金属的浓度。来自表达antA的细胞的外翻膜囊泡积聚了Sb(III),但不积聚As(III),其中外翻囊泡的摄取反映了细胞的外排。AntC是一种具有潜在Sb(III)结合位点的小蛋白,AntC与AntA的共表达增加了对Sb(III)的抗性。我们认为AntC作为Sb(III)的伴侣作用于AntA,增加Sb(III)的外排。一种新的Sb(III)易位atp酶的鉴定提高了我们对细菌对环境锑的生物地球化学循环的认识。
Antimony, like arsenic, is a toxic metalloid widely distributed in the environment. Microbial detoxification of antimony has recently been identified. Here we describe a novel bacterial P1B-type antimonite (Sb(III))-translocating ATPase from the antimony-mining bacterium Comamonas testosterone JL40 that confers resistance to Sb(III). In a comparative proteomics analysis of strain JL40, an operon (ant operon) was up-regulated by Sb(III). The ant operon includes three genes, antR, antC and antA. AntR belongs to the ArsR/SmtB family of metalloregulatory proteins that regulates expression of the ant operon. AntA belongs to the P1B family of the P-type cation-translocating ATPases. It has both similarities to and differences from other members of the P1B-1 subfamily and appears to be the first identified member of a distinct subfamily that we designate P1B-8. Expression AntA in E. coli AW3110 (Δars) conferred resistance to Sb(III) and reduced the intracellular concentration of Sb(III) but not As(III) or other metals. Everted membrane vesicles from cells expressing antA accumulated Sb(III) but not As(III), where uptake in everted vesicles reflects efflux from cells. AntC is a small protein with a potential Sb(III) binding site, and co-expression of AntC with AntA increased resistance to Sb(III). We propose that AntC functions as an Sb(III) chaperone to AntA, augmenting Sb(III) efflux. The identification of a novel Sb(III)-translocating ATPase enhances our understanding of the biogeochemical cycling of environmental antimony by bacteria.
DOI: 10.1074/jbc.m803209200
发表时间: 2008-09-12
影响因子: 4.8
作者:
Ordonez, Efren;Thiyagarajan, Saravanamuthu;Rosen, Barry P.
通讯作者: Rosen, Barry P.
DOI: 10.1159/000319588
发表时间: 2010-01-01
影响因子: 1.2
作者:
Chan, Henry;Babayan, Vartan;Saier, Milton H., Jr.
通讯作者: Saier, Milton H., Jr.
DOI: 10.1073/pnas.0905558106
发表时间: 2009-10-27
影响因子: 11.1
作者:
Arunkumar, Alphonse I.;Campanello, Gregory C.;Giedroc, David P.
通讯作者: Giedroc, David P.
用于鉴定根癌农杆菌中细菌锑氧化酶的蛋白质组学和遗传学。
DOI: 10.1021/es506318b
发表时间: 2015-05-19
影响因子: 11.4
作者:
Li, Jingxin;Wang, Qian;Wang, Gejiao
通讯作者: Wang, Gejiao
DOI: 10.1007/s10534-006-9055-6
发表时间: 2007-06-01
期刊: BIOMETALS
影响因子: 3.5
作者:
Arguello, Jose M.;Eren, Elif;Gonzalez-Guerrero, Manuel
通讯作者: Gonzalez-Guerrero, Manuel