Cloning, Expression, and Characterization of Cytosolic Sulfotransferase Isozymes from Drosophila melanogaster
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概要
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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.
- 社団法人 日本農芸化学会の論文
著者
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TAMURA Hiro-omi
Kyoritsu College of Pharacy
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Hattori Kenji
Kyoritsu University of Pharmacy
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Motohashi Noriko
Kyoritsu University of Pharmacy
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Kobayashi Izumi
Kyoritsu University of Pharmacy
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TOHYA Takeshi
Kyoritsu University of Pharmacy
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OIKAWA Mai
Kyoritsu University of Pharmacy
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