Calcium/calmodulin-dependent protein kinase (CMPK)

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The calcium/calmodulin-dependent protein kinase (CMPK) of Lilium sp. has 520 residues and consists of a serine/threonine protein kinase domain, a calmodulin binding region, and four EF- hands. CMPK is preferentially expressed in anthers [25]. The mechanism and role of its regulation by calcium is not known.