Calcium-dependent protein kinases CPK21 and CPK23 phosphorylate and activate the iron-regulated transporter IRT1 to regulate iron deficiency in Arabidopsis.
Wang Z, Zhang Y, Liu Y, Fu D, You Z, Huang P, Gao H, Zhang Z, Wang C. Sci China Life Sci. 2023 Nov; 66(11):2646-2662. Epub 2023 Jun 5.