Cloning, expression, and characterization of cytosolic sulfotransferase isozymes from Drosophila melanogaster

Kenji Hattori, Noriko Motohashi, Izumi Kobayashi, Takeshi Tohya, Mai Oikawa, Hiro Omi Tamura

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

We have identified four cytosolic sulfotransferase (SULT) homologs in the genome database of Drosophila melanogaster, and have designated these genes dmST1-4. Each of these four isozymes was subsequently classified into a different and novel gene family, as determined by the low amino acid sequence homology (less than 40%) between them, and also toward their vertebrate homologs. The transcripts for these four SULT homologs were detectable at all developmental stages in D. melanogaster. In addition, three of these isozymes, the exception being dmST2, were successfully expressed and purified in Escherichia coli. These recombinant dmST1, 3, and 4 products showed high sulfating activity toward phenolic compounds such as vanillin and 4-nitrophenol, but showed no activity toward typical endogenous substrates such as tyramine and serotonin. DmST4 and dmST3 showed the lowest and highest Km values for 3′-phosphoadenosine-5′-phosphosulfate (PAPS) respectively. DmST4 also showed low but not negligible activity toward 20-hydroxyecdysone.

Original languageEnglish
Pages (from-to)540-547
Number of pages8
JournalBioscience, Biotechnology and Biochemistry
Volume72
Issue number2
DOIs
Publication statusPublished - 2008 Mar 13
Externally publishedYes

Keywords

  • Aryl sulfotransferase
  • Drosophila melanogaster
  • Insect

ASJC Scopus subject areas

  • Biotechnology
  • Analytical Chemistry
  • Biochemistry
  • Applied Microbiology and Biotechnology
  • Molecular Biology
  • Organic Chemistry

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