ER1 — Pisum sativum

Summary

PSAT1G048680 (symbol ER1) on chromosome 1LG6 of garden pea encodes a leucine-rich repeat (LRR) extensin-like regulator with protein serine/threonine kinase activity, ATP binding, and signaling receptor activity. The gene product is associated with steroid binding, SNARE binding, and protein heterodimerization activity. ER1 is associated with immune response-regulating cell surface receptor signaling pathways, defense response to parasitic plants, activation of innate immune response, and PTI signaling. It is also linked to floral organ development, regulation of floral meristem size, specification of floral organ number, sporulation, gametophyte development, skotomorphogenesis, detection of brassinosteroid stimulus, cell wall organization, and microtubule bundling. The protein localizes to the ER membrane, plasmalemma, endosome, and extracellular regions. Studies of related genes in other species link the family to non-specific serine/threonine kinase activity (EC 2.7.11.1).