protein B

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1. A name that has been applied to the β antigen of the C-protein complex (Cβ protein, Bac) in the cell wall of group B streptococci, by analogy with protein A. It binds the Fc region of IgA1 and IgA2.

2. Centromere protein B (CENPB, 599 aa) is a centromere autoantigen and interacts with centromeric heterochromatin and binds to the CENP-B box in centromeric α-satellite DNA (alphoid DNA).

3. A transferrin-binding protein (703 aa) in Neisseria meningitidis serogroup B.

Subjects: Medicine and Health — Chemistry.

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