BibA, a group B streptococcus (GBS) surface protein, has been shown to protect the pathogen from phagocytic killing by sequestering a complement inhibitor: C4b-binding protein (C4BP) [1]. This entry represents a three helical repeated domain in this protein.

1: Novel structure of the N-terminal helical domain of BibA, a group B streptococcus immunogenic bacterial adhesin. Manne K, Chattopadhyay D, Agarwal V, Blom AM, Khare B, Chakravarthy S, Chang C, Ton-That H, Narayana SVL; Acta Crystallogr D Struct Biol. 2020;76:759-770. PMID:32744258