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Structure and Function of Expansins
Wei Zhang, De-Ping Guo*
Department of Horticulture, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310029, China
Abstract: Expansins are proteins secreted by plant cells， which are key regulators of wall extension during growth， and play very important role in cell growth. Expansins are commonly encoded by substantial gene families， and have been divided into four subfamilies， referred to as a， b， g- and d-expansins. A couple of functional roles have been described for expansins in this review. The in-depth exploration of expansins is of significance in understanding the mechanism of cell growth.
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