periplasmic substrate-binding domain of active transport proteins
Periplasmic substrate-binding domain of active transport proteins found in bacteria and Archaea that is predicted to be involved in the efflux of toxic compounds. Members of this subgroup include proteins from Herminiimonas arsenicoxydans, which is resistant to arsenic (As) and various heavy metals such as cadmium and zinc. Moreover, they show significant sequence similarity to the cluster of AmiC and active transport systems for short-chain amides and urea (FmdDEF), and thus are likely to exhibit a ligand-binding mode similar to that of the amide sensor protein AmiC from Pseudomonas aeruginosa.
Feature 1:ligand binding site [chemical binding site]
Evidence:
Structure:3I45; Rhodospirillum rubrum putative twin-arginine translocation pathway signal protein binds nicotinic acid, contacts at 4A - View structure with Cn3D
Jiyao W et al.(2023). "The conserved domain database in 2023.",