The Genome of Deep-Sea Vent Chemolithoautotroph Thiomicrospiracrunogena XCL-2
Presented here is the complete genome sequence ofThiomicrospira crunogena XCL-2, representative of ubiquitouschemolithoautotrophic sulfur-oxidizing bacteria isolated from deep-seahydrothermal vents. This gammaproteobacterium has a single chromosome(2,427,734 bp), and its genome illustrates many of the adaptations thathave enabled it to thrive at vents globally. It has 14 methyl-acceptingchemotaxis protein genes, including four that may assist in positioningit in the redoxcline. A relative abundance of CDSs encoding regulatoryproteins likely control the expression of genes encoding carboxysomes,multiple dissolved inorganic nitrogen and phosphate transporters, as wellas a phosphonate operon, which provide this species with a variety ofoptions for acquiring these substrates from the environment. T. crunogenaXCL-2 is unusual among obligate sulfur oxidizing bacteria in relying onthe Sox system for the oxidation of reduced sulfur compounds. A 38 kbprophage is present, and a high level of prophage induction was observed,which may play a role in keeping competing populations of close relativesin check. The genome has characteristics consistent with an obligatelychemolithoautotrophic lifestyle, including few transporters predicted tohave organic allocrits, and Calvin-Benson-Bassham cycle CDSs scatteredthroughout the genome.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director. Office of Science. Office of AdvancedScientific Computing Research. Office of Biological and EnvironmentalResearch, Lawrence Livermore National Laboratory; US Department ofAgriculture Award 20053841115876; University of South Florida InnovativeTeaching Grant
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 901506
- Report Number(s):
- LBNL-60318; R&D Project: 626882; BnR: KP1103010; TRN: US200714%%72
- Journal Information:
- PLOS Biology, Vol. 4, Issue 12; Related Information: Journal Publication Date: November 14,2006
- Country of Publication:
- United States
- Language:
- English
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