MRP3 — Cicer arietinum

Summary

CaMRP3 (also known as MRP3, ABCC3, or ABCC7) on chickpea chromosome 5 encodes an ATP-binding cassette (ABC) transporter of the C-subfamily, possessing multiple transmembrane domains and ATP-binding sites. The protein is annotated with chlorophyll catabolite transmembrane transporter activity, GS-X pump activity, and ATP-coupled transmembrane transporter activity, and localises to the tonoplast, vacuolar membrane, vesicle membrane, and apoplast. CaMRP3 is associated with aluminium ion transport and detoxification, UDP-glucose and phosphate transmembrane transport, glutathione metabolism, and responses to oxidative stress and other organisms. The gene has been linked to leaf necrosis, seed weight, and chlorophyll content, as well as to ailanthone stress response and bleomycin resistance. Studies of related genes in other species connect the family to cadmium tolerance, accumulation, and root-to-shoot translocation, heavy metal responses, and herbicide stress response.