TCP — Solanum tuberosum

Summary

StTCP, located on potato chromosome 2, encodes a chaperonin subunit of the TCP-1 family, possessing ATP-dependent protein folding chaperone activity and ATP binding. The gene is associated with protein folding and refolding, response to stress and abscisic acid, regulation of cell growth, virus-induced PTGS, and NO storage. It is linked to protein-peroxisome targeting and PTS2 protein import into peroxisomes, as well as peroxisome function. Associations include axillary bud size and selenium and sulfur content. The product localises to the cytosol, nucleus, plastid, mitochondria, and the TriC and Cul4-RING E3 ubiquitin ligase complexes. Studies of related genes in other species link the family to cadmium tolerance, nitric oxide production, and PTS1 protein import into peroxisomes.