Complete genome sequence of Halorhodospira halophila SL1

Jean F. Challacombe, Sophia Majid, Ratnakar Deole, Thomas S. Brettin, David Bruce, Susana F. Delano, John C. Detter, Cheryl D. Gleasner, Cliff S. Han, Monica Misra, Krista G. Reitenga, Natalia Mikhailova, Tanja Woyke, Sam Pitluck, Matt Nolan, Miriam L. Land, Elizabeth Saunders, Roxanne Tapia, Alla Lapidus, Natalia IvanovaWouter D. Hoff

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


Halorhodospira halophila is among the most halophilic organisms known. It is an obligately photosynthetic and anaerobic purple sulfur bacterium that exhibits autotrophic growth up to saturated NaCl concentrations. The type strain H. halophila SL1 was isolated from a hypersaline lake in Oregon. Here we report the determination of its entire genome in a single contig. This is the first genome of a phototrophic extreme halophile. The genome consists of 2,678,452 bp, encoding 2,493 predicted genes as determined by automated genome annota-tion. Of the 2,407 predicted proteins, 1,905 were assigned to a putative function. Future de-tailed analysis of this genome promises to yield insights into the halophilic adaptations of this organism, its ability for photoautotrophic growth under extreme conditions, and its character-istic sulfur metabolism.

Original languageEnglish
Pages (from-to)206-214
Number of pages9
JournalStandards in Genomic Sciences
Issue number2
StatePublished - 1 Jul 2013
Externally publishedYes


  • Halophile
  • Phototrophic
  • Purple sulfur bacterium
  • Saturated salt
  • Sulfur metabolism


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