This domain is found at the C-terminal end of FimA-like major fimbrial subunit protein from Bacteroides stercoris and similar proteins found predominately in bacteroidetes [1]. It is normally found associated with Pfam:PF06321.

1: A Distinct Type of Pilus from the Human Microbiome. Xu Q, Shoji M, Shibata S, Naito M, Sato K, Elsliger MA, Grant JC, Axelrod HL, Chiu HJ, Farr CL, Jaroszewski L, Knuth MW, Deacon AM, Godzik A, Lesley SA, Curtis MA, Nakayama K, Wilson IA; Cell. 2016;165:690-703. PMID:27062925