BIOSYNTHETIC PRECURSORS OF DEAZAFLAVINS

被引:26
作者
REUKE, B [1 ]
KORN, S [1 ]
EISENREICH, W [1 ]
BACHER, A [1 ]
机构
[1] TECH UNIV MUNICH,LEHRSTUHL ORGAN CHEM & BIOCHEM,LICHTENBERGSTR 4,W-8046 GARCHING,GERMANY
关键词
D O I
10.1128/jb.174.12.4042-4049.1992
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
The incorporation of C-13 and C-14-labeled precursors into 5-deaza-7,8-didemethyl-8-hydroxyriboflavin (factor F0) was studied with growing cells of Methanobacterium thermoautotrophicum. 5-Amino-6-ribitylamino-2,4(1H,3H)-pyrimidinedione was incorporated into the deazaflavin and into riboflavin without dilution. Tyrosine and 4-hydroxyphenylpyruvate were incorporated into the deazaflavin and into cellular protein. 4-Hydroxybenzaldehyde was not incorporated. A reaction mechanism is proposed for the formation of the deazaflavin chromophore from 5-amino-6-ribitylamino-2,4(1H,3H)-pyrimidinedione and tyrosine or 4-hydroxyphenylpyruvate.
引用
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页码:4042 / 4049
页数:8
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