FBP — Solanum tuberosum

Summary

StFBP (PGSC0003DMG400024109) on potato chromosome 4 encodes a fructose-1,6-bisphosphatase (EC 3.1.3.11), a class-1 enzyme with fructose-bisphosphatase domains that catalyses fructose 1,6-bisphosphate 1-phosphatase activity. This cytosolic and nuclear protein is associated with fructose, sucrose and starch metabolism, gluconeogenesis, the pentose-phosphate shunt, chlorophyll metabolism, and regulation of stomatal opening. It has been linked to photosynthetic traits including net photosynthetic rate, quantum yield, and water use efficiency, as well as to glucose, proline, sucrose and starch content, starch-to-sucrose ratio, seedling growth and root morphology. Related genes in other species connect the family to photochemical quenching.