This entry contains a prealbumin-like domain from a wide variety of bacterial surface proteins. This entry corresponds to domain 1 and domain 3 of SpaA from Corynebacterium diphtheriae [1]. Some members of this family contain an isopeptide bond.

1: The Corynebacterium diphtheriae shaft pilin SpaA is built of tandem Ig-like modules with stabilizing isopeptide and disulfide bonds. Kang HJ, Paterson NG, Gaspar AH, Ton-That H, Baker EN; Proc Natl Acad Sci U S A. 2009;106:16967-16971. PMID:19805181