Biomaterial Database

Isolation and characterization of Streptomyces venezuelae mutants blocked in chloramphenicol biosynthesis. 1985

J Doull, and Z Ahmed, and C Stuttard, and L C Vining

Twelve Streptomyces venezuelae mutants blocked in chloramphenicol biosynthesis were isolated. Two of these (Cm1-1 and Cm1-12) were apparently blocked in the conversion of chorismic acid to p-aminophenylalanine and three (Cm1-4, Cm1-5 and Cm1-8) accumulated p-aminophenylalanine and may have been blocked in the hydroxylation reaction that converted this intermediate to p-aminophenylserine. One mutant (Cm1-2) accumulated D-threo-1-p-nitrophenyl-2-propionamido-1,3-propanediol and D-threo-1-p-nitrophenyl-2-isobutyramido-1,3-propanediol, indicating that chlorination of the alpha-N-acyl group of chloramphenicol was blocked. The remaining six strains did not excrete any detectable chloramphenicol pathway intermediates.

UI	MeSH Term	Description	Entries
D009154	Mutation	Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations.	Mutations
D002701	Chloramphenicol	An antibiotic first isolated from cultures of Streptomyces venequelae in 1947 but now produced synthetically. It has a relatively simple structure and was the first broad-spectrum antibiotic to be discovered. It acts by interfering with bacterial protein synthesis and is mainly bacteriostatic. (From Martindale, The Extra Pharmacopoeia, 29th ed, p106)	Cloranfenicol,Kloramfenikol,Levomycetin,Amphenicol,Amphenicols,Chlornitromycin,Chlorocid,Chloromycetin,Detreomycin,Ophthochlor,Syntomycin
D002827	Chorismic Acid	A cyclohexadiene carboxylic acid derived from SHIKIMIC ACID and a precursor for the biosynthesis of UBIQUINONE and the AROMATIC AMINO ACIDS.	Acid, Chorismic
D002855	Chromatography, Thin Layer	Chromatography on thin layers of adsorbents rather than in columns. The adsorbent can be alumina, silica gel, silicates, charcoals, or cellulose. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)	Chromatography, Thin-Layer,Thin Layer Chromatography,Chromatographies, Thin Layer,Chromatographies, Thin-Layer,Thin Layer Chromatographies,Thin-Layer Chromatographies,Thin-Layer Chromatography
D013302	Streptomyces	A genus of bacteria that form a nonfragmented aerial mycelium. Many species have been identified with some being pathogenic. This genus is responsible for producing a majority of the ANTI-BACTERIAL AGENTS of practical value.