Enzymatic Formation of D-Cysteinolic Acid Conjugated Chenodeoxycholic Acid in Liver Preparation from Red Seabream, Pagrosomus major
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概要
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The enzymatic formation of D-cysteinolic acid conjugated chenodeoxycholic acid in liver preparation from a marine teleost, wild and cultured red seabream, Pagrosomus major, was investigated. [24-^<14>C]Chenodeoxycholic acid was incubated with taurine, glycine, or D-cysteinolic acid in the liver preparation in the presence of CoA, ATP, NAT^+ and FAD. D-Cysteinolic acid could be conjugated efficiently with chenodeoxycholic acid to give chenodeoxycholyl-D-cysteinolic acid in both wild and cultured red seabream liver preparations, though the production rate was slower than that of the formation of chenodeoxycholytaurine. Under the conditions empolyed, glycine was not utilized as the substrate for the conjugation at all. The formation of chenodeoxycholyl-D-cystenolic acid was decreased by the addition of various concentrations of taurine to the incubation mixture. These results suggest that bile acid-CoA : amino acid N-acyltransferase in red seabream is not able to distinguish taurine and D-cysteinolic acid as the substrate, probably because of their structural similarity. Consequently, D-cystenolic acid conjugated bile acids found in the bile of wild red seabream were thought to be synthesized in the liver of the fish utilizing the unusual amino acid, which originated from foods, prior to secretion into the bile.
- 社団法人日本薬学会の論文
- 1993-12-15
著者
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木平 健治
Institute Of Pharmaceutical Sciences Hiroshima University School Of Medicine
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後藤 孝信
Institute of Pharmaceutical Sciences, Hiroshima University School of Medicine
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宇根 瑞穂
Institute of Pharmaceutical Sciences, Hiroshima University School of Medicine
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倉本 戴寿
Institute of Pharmaceutical Sciences, Hiroshima University School of Medicine
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穂下 剛彦
Institute of Pharmaceutical Sciences, Hiroshima University School of Medicine
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後藤 孝信
Department of Chemistry and Biochemistry, Numazu College of Technology
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倉本 戴寿
Faculty of Medicine, Hiroshima University
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倉本 戴寿
Institute Of Pharmaceutical Sciences Hiroshima University School Of Medicine
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倉本 戴寿
Faculty Of Medicine Hiroshima University
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宇根 瑞穂
Institute Of Pharmaceutical Sciences Hiroshima University School Of Medicine
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穂下 剛彦
Institute Of Pharmaceutical Science Hiroshima University School Of Medicine
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後藤 孝信
沼津工業高等専門学校物質工学科
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後藤 孝信
物質工学科
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Hoshita T
Institute Of Pharmaceutical Science Hiroshima University School Of Medicine
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- Enzymatic Formation of D-Cysteinolic Acid Conjugated Chenodeoxycholic Acid in Liver Preparation from Red Seabream, Pagrosomus major
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