2-Phenylethylamine Catabolism by Escherichia coli K12
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چکیده
منابع مشابه
Hydroxamate formation by anthranilate synthetase of Escherichia coli K12.
HO' H /H2 0 \ I dOOH chorismic acid anthranilic acid (Gibson and Gibson, 1964; Somerville, unpublished results). In Escherichia coli the catalytically active species is a protein complex formed by aggregation of the products of the E and D genes of the tryptophan operon (Ito and Yanofsky, 1966). Anthranilate synthetase is one of a class of amidotransferase enzymes where L-glutamine serves as th...
متن کاملGenetic analysis of the histidine operon in Escherichia coli K12.
I N Salmonella typhimurium a cluster of nine genes, behaving as a single operon (AMES and GARRY 1959) specify the enzymes which carry out the ten reactions involved in the biosynthesis of histidine; one of the nine enzymes is bifunctional (LOPER, GRABNAR, STAHL, HARTMAN and HARTMAN 1964). The histidine operon is contained in a linear segment of deoxyribonucleic acid (DNA) estimated by AMES, GOL...
متن کاملHypermutation in derepressed operons of Escherichia coli K12.
This article presents evidence that starvation for leucine in an Escherichia coli auxotroph triggers metabolic activities that specifically target the leu operon for derepression, increased rates of transcription, and mutation. Derepression of the leu operon was a prerequisite for its activation by the signal nucleotide, guanosine tetraphosphate, which accumulates in response to nutritional str...
متن کاملIsolation and characterization of cysK mutants of Escherichia coli K12.
cysK mutants, deficient in O-acetylserine sulphydrylase A [O-acetyl-L-serine acetate-lyase (adding hydrogen-sulphide); EC 4.2.99.8], were isolated as strains resistant to selenite or giving a black colour reaction on bismuth citrate indicator medium. All were resistant to the inhibitor I,2,4-triazole. Four independent mutants were found which possessed lowered levels of O-acetylserine sulphydry...
متن کاملCharacterization of the cyn operon in Escherichia coli K12.
Escherichia coli can overcome the toxicity of environmental cyanate by hydrolysis of cyanate to ammonia and bicarbonate. This reaction is catalyzed by the enzyme cyanase, encoded by the cynS gene. The nucleotide sequence of cynS has been reported (Sung, Y.-c., Anderson, P. M., and Fuchs, J. A. (1987) J. Bacteriol. 169, 5224-5230). The nucleotide sequence of the complete cyn operon has now been ...
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ژورنال
عنوان ژورنال: Microbiology
سال: 1987
ISSN: 1350-0872,1465-2080
DOI: 10.1099/00221287-133-2-347