Straight and branched (ω-1)-hydroxylated very long chain fatty acids are components of Bradyrhizobium lipid A. | Zendy

Adam Choma | Zendy; Iwona Komaniecka | Zendy

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Straight and branched (ω-1)-hydroxylated very long chain fatty acids are components of Bradyrhizobium lipid A.

Author(s) -

Adam Choma,

Iwona Komaniecka

Publication year - 2011

Publication title -

acta biochimica polonica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.452

H-Index - 78

eISSN - 1734-154X

pISSN - 0001-527X

DOI - 10.18388/abp.2011_2285

Subject(s) - bradyrhizobium , fatty acid , branching (polymer chemistry) , chemistry , chemotaxonomy , alkyl , carbon chain , long chain , bacteria , side chain , long chain fatty acid , stereochemistry , biochemistry , organic chemistry , biology , botany , gene , taxonomy (biology) , rhizobium , genetics , polymer science , polymer

Lipopolysaccharides of seven Bradyrhizobium strains and three whole-cell fatty acid preparations from bacteria isolated from nodules of Sarothamnus scoparius (common broom) were studied for the presence of very long chain (ω-1)-hydroxy fatty acids. Several such fatty acids were identified. Among them, straight-chain as well as mono- and dimethyl branched acids with chains in the range from 26 to 34 carbon atoms were found. Pyrrolidides and 4,4-dimethyloxazoline derivatives were used to determine the branching position. Carbons at the (ω-10) and/or (ω-11) positions in alkyl chains were points of attachment of methyl groups. These data complete the structure of bradyrhizobial lipid A with important details. The obtained results can be applied in the chemotaxonomy of Bradyrhizobium.

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