Bipartite rgp locus diversity in Streptococcus thermophilus corresponds to backbone and side chain differences of its rhamnose-containing cell wall polysaccharide

Katherine Lavelle , Irina Sadovskaya (1) , Evgeny Vinogradov , Philip Kelleher , Gabriele Lugli , Marco Ventura , Douwe van Sinderen , Jennifer Mahony

1 ULCO - Université du Littoral Côte d'Opale

Streptococcus thermophilus is present and applied in industrial and artisanal dairy fermentations for the production of various cheeses and yogurt. During these fermentations, S. thermophilus is vulnerable to phage predation, and recent studies have identified the rhamnose-glucose polymer (Rgp) as the definitive receptor for at least one problematic phage species.

Mots clés: Rgp structure; rgp loci; genetic variation; strain characterization

Domaines: Sciences du Vivant [q-bio]

Katherine Lavelle, Irina Sadovskaya, Evgeny Vinogradov, Philip Kelleher, Gabriele Lugli, et al.. Bipartite rgp locus diversity in Streptococcus thermophilus corresponds to backbone and side chain differences of its rhamnose-containing cell wall polysaccharide. Applied and Environmental Microbiology, 2022, 88 (23), pp.e01504-22. ⟨10.1128/aem.01504-22⟩. ⟨hal-04049600⟩