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

Sequence analysis, in vitro translation, and expression of the cDNA for rat liver minoxidil sulfotransferase.

A cDNA encoding minoxidil sulfotransferase (Mx-ST), a rat liver cytosolic sulfotransferase that catalyzes the 3'-phosphoadenosine 5'-phosphosulfate-dependent sulfate conjugation of minoxidil and p-nitrophenol, has been isolated from a lambda gt11 cDNA library constructed from poly(A)+ RNA isolated from female Sprague-Dawley rat liver. The largest cDNA, designated Mx-STb, consists of 1245 base pairs and contains an open reading frame of 291 amino acids. The predicted size of the protein translated by Mx-STb is 33,909 Da; however, the molecular mass of the pure protein [Biochem. J. 270:721-728 (1990)] is estimated by sodium dodecyl sulfate-polyacrylamide gel electrophoresis to be 35,000 Da. The size of the protein obtained by in vitro translation of Mx-STb is identical to that of the pure protein. Results of initial studies of the expression of Mx-STb in COS-1 cells indicate that the expressed protein displays characteristic Mx-ST and p-nitrophenol sulfotransferase activity, is recognized by rabbit polyclonal antibodies raised against pure rat liver Mx-ST, and migrates at approximately 35,000 Da during sodium dodecyl sulfate-polyacrylamide gel electrophoresis. This paper presents the cloning and expression of a rat phenol sulfotransferase for which the physical, immunological, and kinetic properties are known. Isolation of the cDNA for Mx-ST will aid in the investigation of the heterogeneity, the tissue localization, and the characterization of the kinetic properties of this important drug-metabolizing enzyme, with respect to other similar phenol sulfotransferases present in rat liver cytosol.[1]

References

  1. Sequence analysis, in vitro translation, and expression of the cDNA for rat liver minoxidil sulfotransferase. Hirshey, S.J., Dooley, T.P., Reardon, I.M., Heinrikson, R.L., Falany, C.N. Mol. Pharmacol. (1992) [Pubmed]
 
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