This family of proteins, GalF, represents a non-catalytic subunit of the UTP-glucose pyrophosphorylase modulating the
enzyme activity to increase the formation of UDP-glucose [1].
Marolda CL, Valvano MA.
The GalF protein of Escherichia coli is not a UDP-glucose pyrophosphorylase but interacts with the GalU protein possibly to regulate cellular levels of UDP-glucose.
Mol. Microbiol. 22 827-40 1996
[PubMed: 8971705] http://dx.doi.org/10.1046/j.1365-2958.1996.01531.x