根瘤菌科成员脂多糖中含有27-羟基二十八烷酸的脂质A变体的出现情况。
Occurrence of lipid A variants with 27-hydroxyoctacosanoic acid in lipopolysaccharides from members of the family Rhizobiaceae.
作者信息
Bhat U R, Mayer H, Yokota A, Hollingsworth R I, Carlson R W
机构信息
Complex Carbohydrate Research Center, University of Georgia, Athens 30605.
出版信息
J Bacteriol. 1991 Apr;173(7):2155-9. doi: 10.1128/jb.173.7.2155-2159.1991.
Lipopolysaccharides (LPSs) isolated from several strains of Rhizobium, Bradyrhizobium, Agrobacterium, and Azorhizobium were screened for the presence of 27-hydroxyoctacosanoic acid. The LPSs from all strains, with the exception of Azorhizobium caulinodans, contained various amounts of this long-chain hydroxy fatty acid in the lipid A fractions. Analysis of the lipid A sugars revealed three types of backbones: those containing glucosamine (as found in Rhizobium meliloti and Rhizobium fredii), those containing glucosamine and galacturonic acid (as found in Rhizobium leguminosarum bv. phaseoli, trifolii, and viciae), and those containing 2,3-diamino-2,3-dideoxyglucose either alone or in combination with glucosamine (as found in Bradyrhizobium japonicum and Bradyrhizobium sp. [Lupinus] strain DSM 30140). The distribution of 27-hydroxyoctacosanoic acid as well as analysis of lipid A backbone sugars revealed the taxonomic relatedness of various strains of the Rhizobiaceae.
对从几种根瘤菌属、慢生根瘤菌属、土壤杆菌属和固氮根瘤菌属菌株中分离出的脂多糖（LPS）进行了27 - 羟基二十八烷酸的筛查。除茎瘤固氮根瘤菌外，所有菌株的脂多糖在类脂A组分中都含有不同量的这种长链羟基脂肪酸。对类脂A糖的分析揭示了三种类型的骨架：含有葡糖胺的（如苜蓿根瘤菌和费氏根瘤菌中发现的）、含有葡糖胺和半乳糖醛酸的（如菜豆根瘤菌、三叶草根瘤菌和豌豆根瘤菌生物变种中发现的），以及单独含有2,3 - 二氨基 - 2,3 - 二脱氧葡萄糖或与葡糖胺结合的（如日本慢生根瘤菌和慢生根瘤菌属[羽扇豆]菌株DSM 30140中发现的）。27 - 羟基二十八烷酸的分布以及类脂A骨架糖的分析揭示了根瘤菌科各菌株的分类学相关性。
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