RT Journal Article SR Electronic(1) A1 RAMADAS BHAT, U. A1 CARLSON, R. W. A1 BUSCH, M. A1 MAYER, H.YR 1991 T1 Distribution and Phylogenetic Significance of 27-Hydroxy-Octacosanoic Acid in Lipopolysaccharides from Bacteria Belonging to the Alpha-2 Subgroup of Proteobacteria JF International Journal of Systematic and Evolutionary Microbiology, VO 41 IS 2 SP 213 OP 217 DO https://doi.org/10.1099/00207713-41-2-213 PB Microbiology Society, SN 1466-5034, AB Lipopolysaccharides (LPSs) from a number of bacteria belonging to the alpha-2 subgroup of the class Proteobacteria were screened for the presence of 27-hydroxy-octacosanoic acid (27-OH-28:0). With few exceptions, most of the bacteria contained 27-OH-28:0 in their lipid A fractions. In addition, some of the bacteria contained other n-2-hydroxylated long-chain fatty acids hitherto not reported. The distribution of 27-OH-28:0 was restricted to the alpha-2 subgroup. LPSs from members of the other subgroups (the beta and gamma subgroups), including some well-characterized enterobacterial LPSs, were devoid of 27-OH-28:0. Our results indicate that the presence of n-2-hydroxylated long-chain fatty acids in LPSs might be used as a chemophylogenetical marker., UL https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/00207713-41-2-213