arsenate reduction
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2021 ◽  
Vol 763 ◽  
pp. 144613
Author(s):  
Ziwang Zhao ◽  
Ying Meng ◽  
Qingke Yuan ◽  
Yahua Wang ◽  
Leiming Lin ◽  
...  

Author(s):  
Almudena Escobar-Niño ◽  
Leyre Sánchez-Barrionuevo ◽  
José Miguel Torres-Torres ◽  
Rafael Clemente ◽  
Gabriel Gutiérrez ◽  
...  

Abstract Terribacillus sp. AE2B 122 is an environmental strain isolated from olive-oil agroindustry wastes. This strain displays resistance to arsenic, one of the most ubiquitous carcinogens found in nature. Terribacillus sp. AE2B 122 possesses an unusual ars operon, consisting of the transcriptional regulator (arsR) and arsenite efflux pump (arsB) but no adjacent arsenate reductase (arsC) locus. Expression of arsR and arsB was induced when Terribacillus was exposed to sub-lethal concentrations of arsenate. Heterologous expression of the arsB homologue in Escherichia coli ∆arsRBC demonstrated that it conferred resistance to arsenite and reduced the accumulation of arsenic inside the cells. Two members of the arsC-like family (Te3384 and Te2854) found in the Terribacillus genome were not induced by arsenic, but their heterologous expression in E. coli ∆arsC and ∆arsRBC increased the accumulation of arsenic in both strains. We found that both Te3384 and Te2854 slightly increased resistance to arsenate in E. coli ∆arsC and ∆arsRBC, possibly by chelation of arsenic or increasing the resistance to oxidative stress. Finally, arsenic speciation assays suggest that Terribacillus is incapable of arsenate reduction, in agreement with the lack of an arsC homologue in the genome.


2020 ◽  
Vol 399 ◽  
pp. 122895 ◽  
Author(s):  
Xinyuan Li ◽  
Dan Sun ◽  
Huayuan Feng ◽  
Junxiu Chen ◽  
Yanshan Chen ◽  
...  

2020 ◽  
Vol 113 (8) ◽  
pp. 1147-1153 ◽  
Author(s):  
Ze-Tao Liu ◽  
Wen-Dong Xian ◽  
Meng-Meng Li ◽  
Lan Liu ◽  
Yu-Zhen Ming ◽  
...  

Chemosphere ◽  
2019 ◽  
Vol 218 ◽  
pp. 1061-1070 ◽  
Author(s):  
Meng-Ru Jia ◽  
Ni Tang ◽  
Yue Cao ◽  
Yanshan Chen ◽  
Yong-He Han ◽  
...  

Chemosphere ◽  
2016 ◽  
Vol 161 ◽  
pp. 200-207 ◽  
Author(s):  
Xiaolin Cai ◽  
Zhennan Zhang ◽  
Naiyi Yin ◽  
Huili Du ◽  
Zejiao Li ◽  
...  

2015 ◽  
Vol 290 (36) ◽  
pp. 22262-22273 ◽  
Author(s):  
Cuiyun Hu ◽  
Caifang Yu ◽  
Yanhua Liu ◽  
Xianhui Hou ◽  
Xiaoyun Liu ◽  
...  

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