AGAMOUS Arabidopsis Arabidopsis Proteins EC 2.7.1.- EC 2.7.11.1 ER protein, Arabidopsis ERECTA-family receptor kinases ERL1 protein, Arabidopsis ERL2 protein, Arabidopsis Homeodomain Proteins Journal Article Protein Serine-Threonine Kinases Receptors, Cell Surface Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. YODA. floral meristem flower development flower organ identify