Can phosphorylate AGL24. ATP + L-seryl-[protein] = ADP + H(+) + O-phospho-L-seryl-[protein] ATP + L-threonyl-[protein] = ADP + H(+) + O-phospho-L-threonyl-[protein] Interacts with AGL24. Expressed in meristems, including roots, vegetative, inflorescence and floral meristems, and in embryos. The protein kinase domain is predicted to be catalytically inactive. Lacks the conserved Asp active site at position 612, which is replaced by an Asn residue. However, according to Ref.9, the kinase activity is conserved. Autophosphorylated. Belongs to the protein kinase superfamily. Ser/Thr protein kinase family.