Glycine Betaine Degradation via the Stickland Reaction by a Haloalkaliphilic Bacterium Halonatronomonas betaini Isolated from the Tanatar III Soda Lake

— The haloalkaliphilic microorganism Halonatronomonas betaini Z-7014 Т was found to use glycine betaine as an electron acceptor in the Stickland reaction, resulting in its subsequent degradation to trimethylamine and acetate. The electron donors used were leucine, alanine, valine, isoleucine, and se...

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Published inMicrobiology (New York) Vol. 91; no. 6; pp. 721 - 726
Main Authors Detkova, E. N., Boltyanskaya, Yu. V., Kevbrin, V. V.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.12.2022
Springer Nature B.V
Subjects
Acetic acid
Alanine
Biomedical and Life Sciences
Degradation
Experimental Articles
Glycine betaine
Hydrolysates
Isoleucine
Life Sciences
Medical Microbiology
Microbiology
Microorganisms
Oligopeptides
Trimethylamine
Valine
trimethylamine
haloalkaliphiles
soda lakes
Stickland reaction
betaine
amino acids
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Summary:— The haloalkaliphilic microorganism Halonatronomonas betaini Z-7014 Т was found to use glycine betaine as an electron acceptor in the Stickland reaction, resulting in its subsequent degradation to trimethylamine and acetate. The electron donors used were leucine, alanine, valine, isoleucine, and serine, as well as unidentified oligopeptides present in such protein hydrolysates as yeast extract, tryptone, peptone, and soytone. The most pronounced growth stimulation by betaine was observed in the presence of yeast extract. The substrate/product ratios were determined for the combinations of amino acids and betaine, and the balance equations were obtained. This is the first report on betaine degradation in the Stickland reaction by alkaliphilic microorganisms from soda lake biocenoses.
ISSN:0026-2617
1608-3237
DOI:10.1134/S0026261722601609