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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Biochemical characterization and tissue distribution of human SULT2B1.

The human hydroxysteroid sulfotransferase (SULT) family is comprised of two subfamilies, SULT2A1 and SULT2B1. We characterized the substrate specificity, in vitro biochemical properties, and tissue distribution patterns of human SULT2B1a and SULT2B1b. In contrast to the wide substrate specificity of SULT2A1, SULT2B1a and SULT2B1b specifically catalyzed the sulfonation of 3beta-hydroxysteroids with high catalytic efficiency. Both SULT2B1 enzymes also sulfonated dihydrotestosterone. In vitro studies revealed that the biochemical properties of SULT2B1a and SULT2B1b were not significantly different from each other. However, tissue expression analysis suggested that they are differentially regulated. In contrast to the limited tissue distribution of SULT2A1, SULT2B1 was detected in a variety of hormone-responsive tissues including placenta, ovary, uterus, and prostate. The catalytic activity toward dehydroepiandrosterone and dihydrotestosterone, biologically important androgens, coupled with expression in prostate suggests that SULT2B1 may play a novel regulatory role that protects against the mitogenic effects of androgens.[1]

References

  1. Biochemical characterization and tissue distribution of human SULT2B1. Geese, W.J., Raftogianis, R.B. Biochem. Biophys. Res. Commun. (2001) [Pubmed]
 
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