pfam11102: YjbF (This model is not part of the current CDD release)
Group 4 capsule polysaccharide lipoprotein gfcB, YjbF
This family includes lipoprotein GfcB (YmcC), involved in group 4 capsule polysaccharide formation. YjbF is a family of Gram-negative bacterial outer-membrane lipoproteins, predicted to be a beta-barrel and possibly a porin that is one of four gene-products expressed from an operon, yjbEFGH, which is regulated by the Rcs phosphorelay in a RcsA-dependent manner, similar to that of other exopolysaccharide biosynthetic pathways. It is highly possible that the yjbEFGH operon encodes a system involved in EPS secretion since none of the products is predicted to have enzymic activity, the products are all secreted and YbjF and H are predicted to be beta-barrel lipoproteins similar to porins. It may be that the operon products play some role in biofilm formation and/or matrix production.
Jiyao W et al.(2023). "The conserved domain database in 2023.",