Plant metallothioneins – metal chelators with ROS scavenging activity?

Plant Biology - Tập 13 Số 2 - Trang 225-232 - 2011
Viivi H. Hassinen1, Arja Tervahauta1, Henk Schat2, Sirpa Kärenlampi1
1Department of Biosciences, University of Eastern Finland, Kuopio, Finland
2Institute of Cellular and Molecular Biology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands

Tóm tắt

AbstractMetallothioneins (MTs) are ubiquitous cysteine‐rich proteins present in plants, animals, fungi and cyanobacteria. In plants, MTs are suggested to be involved in metal tolerance or homeostasis, as they are able to bind metal ions through the thiol groups of their cysteine residues. Recent reports show that MTs are also involved in the scavenging of reactive oxygen species (ROS). The interplay between these roles is not entirely clear. Plants have many MT isoforms with overlapping expression patterns, and no specific role for any of them has been assigned. This review is focused on recent findings on plant MTs.

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