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[Carbon isotope fractionation by aerobic heterotrophic microorganisms]. 1982

A A Ivlev, and A G Kaloshin, and Iu N Radiukin, and A F Sholin, and T M Pozdniakova

The isotope effects of carbon were studied in auxotrophic mutants of the following aerobic microorganisms: Escherichia coli, Corynebacterium, Bacillus subtilis, Brevibacterium and Micrococcus glutamicus. Intramolecular isotope heterogeneity was found in position of the total carbon differed from that of the carbon of the carboxyl in the amino acid. In the lysine released by Corynebacterium grown on acetate, the carboxyl carbon is enriched with 13C by 8%o comparing with the total carbon of the amino acid; in the lysine liberated by Brevibacterium flavum, the carboxylic carbon is enriched with 13C by 3.5%o. These and other peculiarities of the intramolecular distribution of carbon isotopes in amino acids should be attributed to diverse pathways of their biosynthesis in different organisms.

UI MeSH Term Description Entries
D008837 Micrococcus A genus of gram-positive, spherical bacteria found in soils and fresh water, and frequently on the skin of man and other animals.
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
D001951 Brevibacterium A gram-positive organism found in dairy products, fresh and salt water, marine organisms, insects, and decaying organic matter.
D002244 Carbon A nonmetallic element with atomic symbol C, atomic number 6, and atomic weight [12.0096; 12.0116]. It may occur as several different allotropes including DIAMOND; CHARCOAL; and GRAPHITE; and as SOOT from incompletely burned fuel. Carbon-12,Vitreous Carbon,Carbon 12,Carbon, Vitreous
D002247 Carbon Isotopes Stable carbon atoms that have the same atomic number as the element carbon but differ in atomic weight. C-13 is a stable carbon isotope. Carbon Isotope,Isotope, Carbon,Isotopes, Carbon
D003352 Corynebacterium A genus of asporogenous bacteria that is widely distributed in nature. Its organisms appear as straight to slightly curved rods and are known to be human and animal parasites and pathogens.
D004926 Escherichia coli A species of gram-negative, facultatively anaerobic, rod-shaped bacteria (GRAM-NEGATIVE FACULTATIVELY ANAEROBIC RODS) commonly found in the lower part of the intestine of warm-blooded animals. It is usually nonpathogenic, but some strains are known to produce DIARRHEA and pyogenic infections. Pathogenic strains (virotypes) are classified by their specific pathogenic mechanisms such as toxins (ENTEROTOXIGENIC ESCHERICHIA COLI), etc. Alkalescens-Dispar Group,Bacillus coli,Bacterium coli,Bacterium coli commune,Diffusely Adherent Escherichia coli,E coli,EAggEC,Enteroaggregative Escherichia coli,Enterococcus coli,Diffusely Adherent E. coli,Enteroaggregative E. coli,Enteroinvasive E. coli,Enteroinvasive Escherichia coli
D000332 Aerobiosis Life or metabolic reactions occurring in an environment containing oxygen. Aerobioses
D000596 Amino Acids Organic compounds that generally contain an amino (-NH2) and a carboxyl (-COOH) group. Twenty alpha-amino acids are the subunits which are polymerized to form proteins. Amino Acid,Acid, Amino,Acids, Amino
D001412 Bacillus subtilis A species of gram-positive bacteria that is a common soil and water saprophyte. Natto Bacteria,Bacillus subtilis (natto),Bacillus subtilis subsp. natto,Bacillus subtilis var. natto

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