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S protein is conserved amongst GBS serotypes. (A) Diagram showing GBS S protein functional protein domains. (B) Circular dendrogram showing phylogeny of S protein homologs in Streptococcus genus acquired from PSI-BLAST of the CNCTC 10/84 strain S protein sequence. Sequences with > 60% sequence identity and > 70% query coverage for used for phylogeny analysis. (C) Gene locus location of GBS S protein (ess) and surrounding genes.
