Mutational analysis of the ribC gene of Bacillus subtilis.

Autor:	Karelov, D., Kreneva, R., Errais Lopes, L., Perumov, D., Mironov, A.
Předmět:	BACILLUS subtilis genetics ADENINE nucleotides NUCLEOTIDE sequence ENZYMES CHEMICAL synthesis TRANSFERASES VITAMIN B2 ADENOSINE triphosphate BINDING sites
Zdroj:	Russian Journal of Genetics; Jun2011, Vol. 47 Issue 6, p757-761, 5p
Abstrakt:	The nucleotide sequence of the ribC gene encoding the synthesis of bifunctional flavokinase/flavine adenine nucleotide (FAD) synthetase in Bacillus subtilis have been determined in a family of riboflavinconstitutive mutants. Two mutations have been found in the proximal region of the gene, which controls the transferase (FAD synthase) activity. Three point mutations and one double mutation have been found (in addition to the two mutations that were detected earlier) in the distal region of the gene, which controls the flavokinase (flavin mononucleotide (FMN) synthase) activity. On the basis of all data known to date, it has been concluded that the identified mutations affect riboflavin and ATP binding sites. No mutations have been found in the PTAN conserved sequence, which forms the magnesium and ATP common binding site and is identical for organisms of all organizational levels, from bacteria too humans. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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