This domain family is found in bacteria, and is approximately 20 amino acids in length. The family is found in association with Pfam:PF04619. This family is the Dr-family adhesin expressed by uropathogenic E. coli.

1: Purification and characterization of the Dr hemagglutinins expressed by two uropathogenic Escherichia coli strains. Kist ML, Salit IE, Hofmann T; Infect Immun. 1990;58:695-702. PMID:1968432