Major facilitator superfamily domain containing 5 protein
Human major facilitator superfamily domain containing 5 protein (MFSD5) is also called molybdate-anion transporter, or molybdate transporter 2 homolog (MOT2). It acts as an atypical solute carrier (SLC) that mediates high-affinity intracellular uptake of the rare oligo-element molybdenum. It may also play a role in maintaining the glucose homeostasis and pancreatic beta-cell proliferation, as well as in altered energy homeostasis. MFSD5 belongs to the Major Facilitator Superfamily (MFS) of membrane transport proteins, which are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Feature 1:putative chemical substrate binding pocket [chemical binding site]
Evidence:
Comment:based on the structures of MFS transporters with bound substrates, substrate analogs, and/or inhibitors
Comment:since MFS proteins facilitate the transport of many different substrates including ions, sugar phosphates, drugs, neurotransmitters, nucleosides, amino acids, and peptides, the residues involved in substrate binding may not be strictly conserved among superfamily members
Comment:the substrate binding site or translocation pore has access to both sides of the membrane in an alternating fashion through a conformational change of the MFS transporter
Jiyao W et al.(2023). "The conserved domain database in 2023.",