P5CS — Medicago truncatula

Summary

MTR_4G020110 (P5CS, MtP5CS) encodes a bifunctional enzyme with glutamate 5-kinase and glutamylphosphate reductase activities, also annotated for ATP binding. In barrel medic, this gene is associated with L-proline biosynthesis, proline metabolism, and regulation of proline anabolism, as well as glutamate metabolism, phytochelatin anabolism, polyamine anabolism, hydrogen peroxide biosynthesis, and spermine breakdown. It is linked to nitrogen fixation, embryogenesis, seed development, cell cycle checkpoint, defense response, osmotic response, and response to thirst. The encoded protein localises to the cytoplasm. Associations with traits include proline content, photosynthetic rate, stomatal resistance, drought tolerance, and salt tolerance. Studies of related genes in other species link the family to additional traits such as leaf chlorophyll content, plant height, root length, and abscisic acid sensitivity.