FimB and FimE and related proteins, integrase/recombinases.
This CD includes proteins similar to E.coli FimE and FimB and Proteus mirabilis MrpI. FimB and FimE are the regulatory proteins during expression of type 1 fimbriae in Escherichia coli. The fimB and fimE proteins direct the phase switch into the 'on' and 'off' position. MrpI is the regulatory protein of proteus mirabilis fimbriae expression. This family belongs to the integrase/recombinase superfamily.