Research Progress of Structural Characteristics and Functions of Calcium-dependent Protein Kinases in Plants

Abstract

Abstract: The calcium ion(Ca²⁺)is known as a key second messenger in plants, intracellular Ca²⁺ signals are relayed to downstream(transcription factors, NADPH oxidases genes)via different calcium sensor proteins(CaMs, CaMLs, CBLs, CDPKs), which further causes expression of related genes and responses to abiotic and biotic stresses. Calcium-dependent protein kinases(CDPKs)which are Ser/The protein kinases found in plants and some protozoa, play crucial roles in Ca²⁺-mediated signaling pathways. CDPKs are encoded by multigene families and are divided into four subgroups. CDPKs exhibit overlapping and distinct expression patterns, sub-cellular localizations, substrate specificities and redundancy and/or diversity functions. Here we review the recent advances on the structural characteristics, expression patterns, localizations, regulations substrates both in vivo and in vitro, inhibitors and functions in response to abiotic and biotic stresses of CDPKs in order to shed light on the functions and regulatory mechanisms.

Key words: Calcium-dependent protein kinases(CDPKs), Structural characteristics, Regulatory mechanism, Biological functions

Jiang Shanshan, Zhang Dan, Kong Xiangpei, Zhou Yan, Li Dequan. Research Progress of Structural Characteristics and Functions of Calcium-dependent Protein Kinases in Plants[J]. Biotechnology Bulletin, 2013, 0(6): 12-19.

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