Aromatic hydroxylation and sulfation of 5-hydroxyflavone by Streptomyces fulvissimus
نویسندگان
چکیده
منابع مشابه
Biosynthesis of gold nanoparticles using streptomyces fulvissimus isolate
Objective(s): In recent years, the biosynthesis of gold nanoparticles has been the focus of interest because of their emerging application in a number of areas such as biomedicine. In the present study we report the extracellular biosynthesis of gold nanoparticles (AuNPs) by using a positive bacterium named Streptomyces fulvissimus isolate U from rice fields of Guilan Province, Iran.Materials a...
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A total of 215 Streptomyces strains were screened for their capacity to regio- and stereoselectively hydroxylate beta- and/or alpha-ionone to the respective 3-hydroxy derivatives. With beta-ionone as the substrate, 15 strains showed little conversion to 4-hydroxy- and none showed conversion to the 3-hydroxy product as desired. Among these 15 Streptomyces strains, S. fradiae Tü 27, S. arenae Tü ...
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Objective(s): Biosynthesis of gold nanoparticles (NGPs) is environmentally safer than chemical and physical procedures. This method requires no use of toxic solvents and synthesis of dangerous products and is environmentally safe. In this study, we report the biosynthesis of NGPs using Streptomyces djakartensis isolate B-5. Materials and Methods: NGPs were biosynthesized by reducing aqueous ...
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Sex steroids, also known as gonadal steroids, are oxidized with hydroxylation by cytochrome P450, glucuronidation by UDP-glucuronosyltransferase, sulfation by sulfotransferase, andO-methylation by catechol O-methyltransferase. Thus, it is important to determine the process by which inflammation influences metabolism of gonadal hormones. Therefore, we investigated the mechanism of metabolic enzy...
متن کاملAscorbic acid in aromatic hydroxylation. I. A model system for aromatic hydroxylation.
Studies in this laboratory on the conversion of tyramine to hydroxytyramine by homogenates of adrenal medulla showed that hydroxylation occurred maximally on the addition of ascorbic acid. Further investigation revealed that the hydroxylation did not require adrenal tissue, but could occur in the presence of ascorbic acid and oxygen. This observation led to a study of the r61e of ascorbic acid ...
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ژورنال
عنوان ژورنال: Applied and Environmental Microbiology
سال: 1989
ISSN: 0099-2240,1098-5336
DOI: 10.1128/aem.55.12.3140-3142.1989