RPE — Solanum tuberosum

Summary

StRPE (PGSC0003DMG400019521) on potato chromosome 3 encodes a D-ribulose-phosphate 3-epimerase (EC 5.1.3.1). The protein carries a ribulose-phosphate 3-epimerase domain and an aldolase TIM barrel, localises to plastids, chloroplast stroma, thylakoids and the apoplast, and is associated with both the oxidative and non-oxidative branches of the pentose-phosphate shunt, the reductive pentose-phosphate cycle, and general carbohydrate metabolism. StRPE is associated with responses to cold and to nematodes, as well as with embryo development ending in seed dormancy. Phenotype associations include slightly reduced CO₂ assimilation rate and reduced CO₂ assimilation rate under high light. Related genes in other species link the family to photosynthetic ability and photochemical quenching, and to nematode feeding site formation.