PCK1 — Zea mays

Summary

ZM00001EB011080, designated ZmPCK1, encodes a phosphoenolpyruvate carboxykinase (ATP) with PEPCK_ATP_CS and PEP_carboxykinase domains, conferring phosphoenolpyruvate carboxykinase (ATP) activity (EC 4.1.1.49). This maize gene on chromosome 1 is associated with C4 and CAM photosynthesis, regulation of gluconeogenesis, and malate metabolism and transport. It has been linked to numerous agronomic traits including grain yield, grain filling period, biomass yield, heterosis, heat and cold tolerance, water use efficiency, radiation use efficiency, net photosynthetic rate, rubisco content, chlorophyll content, and carbon isotope discrimination. Additional associations include leaf thickness, stomatal resistance, sucrose and total soluble sugar content, protein content, and photochemical quenching. The encoded protein localises to the cytosol and cytoplasm. Studies of related genes in other species link the family to seedling establishment.