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The relation between purine metabolism and flavinogenesis in Eremothecium ashbyii. The identification of S-adenosylmethionine and S-adenosylhomocysteine accumulated in non-growing cells of E. ashbyii.

Authors
Type
Published Article
Journal
Journal of nutritional science and vitaminology
Publication Date
Volume
23
Issue
2
Pages
71–79
Identifiers
PMID: 559727
Source
Medline
License
Unknown

Abstract

When adenine was added to the non-growing cell medium of Eremothecium ashbyii, riboflavin production of the mold was increasingly inhibited with increasing concentration of adenine. Under these conditions, a cationic compound was accumulated in the mycelia. The compound was isolated from the mycelia and highly purified. The purified compound was proved to be S-adenosylhomocysteine through IR analysis. In the control experiment, or in the addition of other purines which stimulated riboflavin production of the mold, another cationic compound was accumulated in the non-growing cells. The compound was largely accumulated in the presence of both adenine and methionine, isolated from the mycelia and purified. The purified compound was concluded to be S-adenosylmethionine through IR and NMR analyses. The significance of these compounds on the riboflavin biosynthetic pathway was argued under "Discussion".

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