ACT7 — Medicago truncatula

Summary

MTR_3G095530, designated MtACT7 (also known as ACT7, AC101, MtACTIN), encodes an actin protein on barrel medic chromosome 3. The product is a structural constituent of the cytoskeleton, possesses ATP binding, protein binding, hydrolase activity, and protein phosphorylated amino acid binding, and localises to the actin cytoskeleton, chloroplast envelope, plant-type cell wall, nucleolus, and plasmodesmata. MtACT7 is associated with actin nucleation, polymerization and depolymerization, cytoskeleton and membrane organization, root epidermal cell differentiation, exocytosis, appressorium formation, and microtubule dynamics. It has been linked to root growth and hair elongation, seedling growth and development, leaf composition, nitrate uptake and assimilation, polar auxin transport, disease resistance, salt stress adaptation, germination, callus formation, and plant fitness. Studies of related genes in other species link the family to actin filament organization, chloroplast clustering, organ size, and calcium signaling.