pfam05025: RbsD_FucU (487498 is an unknown moldel)
RbsD / FucU transport protein family
The Escherichia coli high-affinity ribose-transport system consists of six proteins encoded by the rbs operon (rbsD, rbsA, rbsC, rbsB, rbsK and rbsR). Of the six components, RbsD is the only one whose function is unknown although it is thought that it somehow plays a critical role in PtsG-mediated ribose transport. This family also includes FucU a protein from the fucose biosynthesis operon that is presumably also involved in fucose transport by similarity to RbsD.
Jiyao W et al.(2023). "The conserved domain database in 2023.",