This family consists of several RfbT proteins from Vibrio cholerae. It has been found that genetic alteration of the rfbT gene is responsible for serotype conversion of Vibrio cholerae O1 [1] and determines the difference between the Ogawa and Inaba serotypes, in that the presence of rfbT is sufficient for Inaba-to-Ogawa serotype conversion [2].

1: Mutations in the rfbT gene are responsible for the Ogawa to inaba serotype conversion in Vibrio cholerae O1. Ito T, Hiramatsu K, Ohshita Y, Yokota T; Microbiol Immunol 1993;37:281-288. PMID:7688846

2: Construction of a Vibrio cholerae vaccine candidate using transposon delivery and FLP recombinase-mediated excision. Chiang SL, Mekalanos JJ; Infect Immun 2000;68:6391-6397. PMID:11035750