Members of this family are ComGE (protein E of the comG locus), as found in multiple species of Streptococcus. The protein is suggested to be a prepilin [1].

1: A type IV pilus mediates DNA binding during natural transformation in Streptococcus pneumoniae. Laurenceau R, Pehau-Arnaudet G, Baconnais S, Gault J, Malosse C, Dujeancourt A, Campo N, Chamot-Rooke J, Le Cam E, Claverys JP, Fronzes R; PLoS Pathog. 2013;9:e1003473. PMID:23825953