The genome of the epsilon-proteobacterial chemolithoautotroph /Sulfurimonas denitrificans.

Sievert, S. M., Scott, K. M., Klotz, M. G., Chain, P. S. G., Hauser, L. J., Hemp, J., Hügler, Michael, Land, M., Lapidus, A., Larimer, F. W., Lucas, S., Malfatti, S. A., Meyer, F., Paulsen, I. T., Ren, Q. and Simon, J. (2008) The genome of the epsilon-proteobacterial chemolithoautotroph /Sulfurimonas denitrificans. Applied and Environmental Microbiology, 74 (4). pp. 1145-1156.

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[img] Text (Further details on genome structure and restriction-modification systems; two large identical transposons from the Sulfurimonas denitrificans genome (Fig. S1); map of a region from the Sulfurimonas denitrificans genome that includes a small repeated ...)
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Image ( Phylogenetic relationships of NosZ from different bacteria and the archaeon Pyrobaculum calidifontis (Fig. S3))
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Abstract

Sulfur-oxidizing epsilonproteobacteria are common in a variety of sulfidogenic environments. These autotrophic and mixotrophic sulfur-oxidizing bacteria are believed to contribute substantially to the oxidative portion of the global sulfur cycle. In order to better understand the ecology and roles of sulfur-oxidizing epsilonproteobacteria, in particular those of the widespread genus Sulfurimonas, in biogeochemical cycles, the genome of Sulfurimonas denitrificans DSM1251 was sequenced. This genome has many features, including a larger size (2.2 Mbp), that suggest a greater degree of metabolic versatility or responsiveness to the environment than seen for most of the other sequenced epsilonproteobacteria. A branched electron transport chain is apparent, with genes encoding complexes for the oxidation of hydrogen, reduced sulfur compounds, and formate and the reduction of nitrate and oxygen. Genes are present for a complete, autotrophic reductive citric acid cycle. Many genes are present that could facilitate growth in the spatially and temporally heterogeneous sediment habitat from where Sulfurimonas denitrificans was originally isolated. Many resistance-nodulation-development family transporter genes (10 total) are present; of these, several are predicted to encode heavy metal efflux transporters. An elaborate arsenal of sensory and regulatory protein-encoding genes is in place, as are genes necessary to prevent and respond to oxidative stress.

Document Type: Article
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-MI Marine Microbiology
Refereed: Yes
Open Access Journal?: No
ISSN: 0099-2240
Date Deposited: 03 Dec 2008 16:51
Last Modified: 26 Apr 2016 11:51
URI: http://oceanrep.geomar.de/id/eprint/4302

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