MGP1 — Zea mays

Summary

ZM00001EB231220, designated MGP1 (also known as ZmMASP1, PHI1, ZmPHI1, MASP1) on maize chromosome 5, encodes a protein with SUMO transferase activity, protein translocase activity, and binding capabilities for SUMO, copper, zinc, cobalt, and kinases. The gene is associated with mitochondrial processes including outer membrane protein import, matrix protein import, and components of the Fcj1, Tim23, and translocase complexes, as well as C4 photosynthesis, oxidative phosphorylation, alternative respiration, and the GABA shunt. MGP1 is associated with numerous agronomic traits including spike dry weight and length, net photosynthetic rate, quantum yield, chlorophyll content, transpiration rate, root volume and length, phosphorus uptake, flowering time, anthesis, heat and cold tolerance, salt response, germination rate, and cytoplasmic male sterility. Phenotypic associations include anthocyanin accumulation, pollen formation, and mitochondrial protein import.