Department of Biology, Clark University, 15 Maywood Street, Worcester, MA 01501, USA.
Arch Microbiol. 2013 Sep;195(9):661-70. doi: 10.1007/s00203-013-0915-5. Epub 2013 Aug 18.
Denitrovibrio acetiphilus N2460(T) is one of the few members of the phylum Deferribacteres with a sequenced genome. N2460(T) was capable of growing with dimethyl sulfoxide, selenate, or arsenate provided as a terminal electron acceptor, and we identified 15 genes that could possibly encode respiratory reductases for these compounds. The protein encoded by one of these genes, YP_003504839, clustered with respiratory arsenate reductases on a phylogenetic tree. Transcription of the gene for YP_003504839, Dacet_2121, was highly induced when arsenate was provided as a terminal electron acceptor. Dacet_2121 exists in a possible operon that is distinct from the previously characterized respiratory arsenate reductase operon in Shewanella sp. ANA-3.
脱铁杆菌 N2460(T) 是少数具有测序基因组的脱硫杆菌门成员之一。N2460(T) 能够以二甲亚砜、硒酸盐或砷酸盐作为末端电子受体进行生长，我们鉴定了 15 个可能编码这些化合物呼吸还原酶的基因。这些基因中的一个基因（YP_003504839）编码的蛋白质在系统发育树上与呼吸砷酸盐还原酶聚类。当提供砷酸盐作为末端电子受体时，YP_003504839 的基因转录（Dacet_2121）高度诱导。Dacet_2121 存在于一个可能的操纵子中，该操纵子与先前在 Shewanella sp. ANA-3 中表征的呼吸砷酸盐还原酶操纵子不同。
