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Gene Review:

sqdB - UDP-sulfoquinovose synthase

Rhodobacter sphaeroides 2.4.1

Benning, C. et al., Rossak, M. et al., Benning, C. et al.

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Disease relevance of sqdB

Stable null mutants of the photosynthetic bacterium Rhodobacter sphaeroides completely lacking sulfolipid were obtained by disruption of the sqdB gene [1].

High impact information on sqdB

Sequence analysis of the relevant region of the clone revealed three, in tandem open reading frames, designated sqdB, ORF2, and sqdC [2].
The N-terminal region of the 46-kDa putative protein encoded by the sqdB gene showed slight homology to UDP-glucose epimerase from various organisms [2].
The biosynthesis of the sulfolipid sulfoquinovosyl diacylglycerol in the purple bacterium Rhodobacter sphaeroides requires at least four genes:sqdA, sqdB, sqdC, and sqdD [3].

References

The sulfolipid sulfoquinovosyldiacylglycerol is not required for photosynthetic electron transport in Rhodobacter sphaeroides but enhances growth under phosphate limitation. Benning, C., Beatty, J.T., Prince, R.C., Somerville, C.R. Proc. Natl. Acad. Sci. U.S.A. (1993) [Pubmed]
Identification of an operon involved in sulfolipid biosynthesis in Rhodobacter sphaeroides. Benning, C., Somerville, C.R. J. Bacteriol. (1992) [Pubmed]
Accumulation of sulfoquinovosyl-1-O-dihydroxyacetone in a sulfolipid-deficient mutant of Rhodobacter sphaeroides inactivated in sqdC. Rossak, M., Schäfer, A., Xu, N., Gage, D.A., Benning, C. Arch. Biochem. Biophys. (1997) [Pubmed]

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