AMY1 — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.7HG0721060, designated HvAMY1 on barley chromosome 7H, encodes an alpha-amylase enzyme (EC 3.2.1.1) with alpha-amylase activity and calcium ion binding, belonging to the glycoside hydrolase 13 family. The gene is associated with starch and sucrose breakdown, endosperm development, and structural organization, and its product localizes to the extracellular space. HvAMY1 has been linked to seed size and seed germination. Studies of related genes in other species, such as AMY3D and AMY1.1, connect the family to similar carbohydrate mobilization processes during germination and grain development.