| Metabolism of chiral ionylideneacetic acids on the abscisic acid biosynthetic pathway in Cercospora. | |
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MedLine Citation:
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PMID: 11210128 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A Chiralcel OJ column was used to determine the absolute configuration of naturally occurring alpha-ionylideneacetic acid from Cercospora rosicola and gamma-ionylideneacetic acid from C. cruenta as (R) enantiomers in accordance with their biosynthetic product, (S)-ABA. Both enantiomers of [1, 2-(13)C2]-alpha and gamma-ionylideneacetic acids were prepared and fed to C. rosicola and C. cruenta. Six combinations of feeding experiments comparatively and unequivocally demonstrated stereoselectivity in the biosynthetic conversions, including stepwise hydroxylation at C-1' and 4'. Enzymatic isomerization from the gamma to alpha-intermediate was suggested not to be involved in ABA biosynthesis in C. rosicola. |
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Authors:
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H Yamamoto; M Inomata; S Tsuchiya; M Nakamura; T Oritani |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Bioscience, biotechnology, and biochemistry Volume: 64 ISSN: 0916-8451 ISO Abbreviation: Biosci. Biotechnol. Biochem. Publication Date: 2000 Dec |
Date Detail:
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Created Date: 2001-02-07 Completed Date: 2001-05-17 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9205717 Medline TA: Biosci Biotechnol Biochem Country: Japan |
Other Details:
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Languages: eng Pagination: 2644-50 Citation Subset: IM |
Affiliation:
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Faculty of Agriculture, Niigata University, Ikarashi, Japan. hirotaka@agr.niigata-u.ac.jp |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Abscisic Acid
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analogs & derivatives,
biosynthesis*,
chemistry*,
metabolism* Glutamic Acid / metabolism Mitosporic Fungi / metabolism* Phosphates / metabolism Stereoisomerism Substrate Specificity Thiamine / metabolism |
| Chemical | |
Reg. No./Substance:
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0/Phosphates; 0/alpha-ionylideneacetic acid; 0/gamma-ionylideneacetic acid; 21293-29-8/Abscisic Acid; 56-86-0/Glutamic Acid; 59-43-8/Thiamine |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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