Chin Bull Bot ›› 2013, Vol. 48 ›› Issue (4): 447-460.doi: 10.3724/SP.J.1259.2013.00447

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Research Progress in Plant IQ Motif-containing Calmodulin-binding Proteins

Chang’en Tian*, Yuping Zhou   

  1. Guangzhou Key Laboratory for Functional Study on Stress-resistant Genes in Plants, School of Life Sciences, Guangzhou University, Guangzhou 510006, China
  • Received:2012-12-07 Revised:2013-01-29 Online:2013-08-09 Published:2013-07-01
  • Contact: Chang’en Tian

Abstract: As the primary intracellular calcium sensors, calmodulins regulate different cellular physiologic, growth and development processes by binding to different calmodulin-binding proteins. The IQ motif, IQxxxRGxxxR (Pfam 00612), is one of a few recognition motifs for calmodulins in calmodulin-binding proteins. As well as a few other proteins, 5 major families, including IQM, IQD, CAMTA, CNGC and myosin family, have been found to possess the IQ motif(s) in plants. Here, we review the research progress in plant IQ motif-containing calmodulin-binding proteins, including their type, structural characteristics and function, and prospects for future study.

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