Deduced amino acid sequence of CbpA. The predicted signal peptide cleavage site is denoted by the vertical arrow. The putative collagen-binding subdomain is underlined. The B domains, B1, B2, B3, and B4, are double underlined, with the start of each repeat indicated by bent arrows. The LPXTG-like motif and the charged C terminus are boxed in black, and the intervening membrane-spanning domain is boxed. Amino acid numbers are on the right.