CPK1 (calcium-dependent protein kinase isoform AK1); calmodulin-dependent protein kinase/ kinase. Identical to Calcium-dependent protein kinase isoform AK1 (AK1) [Arabidopsis Thaliana] (GB:Q06850); similar to CPK20 (calcium-dependent protein kinase 20), calmodulin-dependent protein kinase/ kinase [Arabidopsis thaliana] (TAIR:AT2G38910.1); similar to CPK2 (CALMODULIN-DOMAIN PROTEIN KINASE CDPK ISOFORM 2), calmodulin-dependent protein kinase/ kinase [Arabidopsis thaliana] (TAIR:AT3G10660.1); similar to CPK6 (CALCIUM-DEPENDENT PROTEIN KINASE 6), calmodulin-dependent protein kinase/ kinase [Arabidopsis thaliana] (TAIR:AT2G17290.1); similar to ca