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Complete genome sequence of Rhodospirillum rubrum type strain (S1).

A Christine Munk, Alex Copeland, Susan Lucas

Standards in Genomic Sciences

|September 3, 2011

Summary

Rhodospirillum rubrum, an anoxygenic phototroph, has its type strain genome sequenced. This provides insights into its simple photosynthetic system and unique metabolic capabilities, including carbon monoxide utilization.

Keywords:

Alphaproteobacteria DOEM 2002 Gram-negative Rhodospirillaceae facultatively anaerobic mesophile motile photolithotrophic

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Area of Science:

Microbiology
Photosynthesis research
Genomics

Background:

Rhodospirillum rubrum is the type species of Rhodospirillaceae, known for anoxygenic photosynthesis.
It possesses a simplified photosynthetic system and unique metabolic pathways, such as carbon monoxide utilization.
R. rubrum is extensively studied for physiological and genetic research.

Purpose of the Study:

To present the first type strain genome sequence for the genus Rhodospirillum.
To provide a genomic resource for R. rubrum strain S1(T).
To facilitate further physiological and genetic studies of this model organism.

Main Methods:

Whole-genome sequencing of Rhodospirillum rubrum strain S1(T).
Bioinformatic analysis of the sequenced chromosome and plasmid.
Annotation of protein-coding and RNA genes.

Main Results:

The genome consists of a 4,352,825 bp chromosome and a 53,732 bp plasmid.
A total of 3,850 protein-coding genes and 83 RNA genes were identified.
This represents the second published genome for the genus Rhodospirillum and the first for a type strain.

Conclusions:

The genome sequence of R. rubrum S1(T) offers valuable insights into its anoxygenic photosynthetic mechanisms.
It serves as a crucial genomic foundation for understanding its unique metabolic capabilities and adaptation.
This resource will advance research in microbial physiology, genetics, and evolution.