Genetics and Evolution of Yersinia Pseudotuberculosis O-specific Polysaccharides: a Novel Pattern of O-antigen Diversity
Overview
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O-antigen polysaccharide is a major immunogenic feature of the lipopolysaccharide of Gram-negative bacteria, and most species produce a large variety of forms that differ substantially from one another. There are 18 known O-antigen forms in the Yersinia pseudotuberculosis complex, which are typical in being composed of multiple copies of a short oligosaccharide called an O unit. The O-antigen gene clusters are located between the hemH and gsk genes, and are atypical as 15 of them are closely related, each having one of five downstream gene modules for alternative main-chain synthesis, and one of seven upstream modules for alternative side-branch sugar synthesis. As a result, many of the genes are in more than one gene cluster. The gene order in each module is such that, in general, the earlier a gene product functions in O-unit synthesis, the closer the gene is to the 5΄ end for side-branch modules or the 3΄ end for main-chain modules. We propose a model whereby natural selection could generate the observed pattern in gene order, a pattern that has also been observed in other species.
in Non-Domesticated Mammals and Birds in Captivity.
Nederlof R, Bruins-van Sonsbeek L, Stumpel J, van Bolhuis H, Broens E, Ijzer J Vet Sci. 2025; 12(2).
PMID: 40005921 PMC: 11861676. DOI: 10.3390/vetsci12020161.
Large diversity in the O-chain biosynthetic cluster within populations of Pelagibacterales.
Haro-Moreno J, Lopez-Perez M, Molina-Pardines C, Rodriguez-Valera F mBio. 2025; 16(3):e0345524.
PMID: 39969192 PMC: 11898729. DOI: 10.1128/mbio.03455-24.
Hu B, Wang J, Li L, Wang Q, Qin J, Chi Y J Microbiol Biotechnol. 2024; 34(8):1599-1608.
PMID: 39081257 PMC: 11380512. DOI: 10.4014/jmb.2402.02044.
Diversity of sugar-diphospholipid-utilizing glycosyltransferase families.
Meitil I, Gippert G, Barrett K, Hunt C, Henrissat B Commun Biol. 2024; 7(1):285.
PMID: 38454040 PMC: 10920833. DOI: 10.1038/s42003-024-05930-2.
Hong Y, Hu D, Verderosa A, Qin J, Totsika M, Reeves P EcoSal Plus. 2023; 11(1):eesp00202022.
PMID: 36622162 PMC: 10729934. DOI: 10.1128/ecosalplus.esp-0020-2022.