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Group:MUZIC:Plectin

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Introduction

Plectin is a multidomain protein with large size (>500kDa) and versatile binding properties, which abundantly expressed in a wide variety of mammalian tissues and cell types, combined with different binding partners. [1].


Overall structure

Plectin can be divided in three main sections; a central coiled-coil rod domain, N and C-terminal globular region and exhibits a dumbbell like structure. C-terminal region is composed of 6 homologous repeating domains, and this region has a role in binding to intermediate filaments such as vimentin and cytokeratin [2]. N-terminal globular region contains actin binding domain (ABD) comprising two calponin homology () domains and N-terminal arm, which varies among isoforms.


References

  1. Fuchs P, Zorer M, Rezniczek GA, Spazierer D, Oehler S, Castanon MJ, Hauptmann R, Wiche G. Unusual 5' transcript complexity of plectin isoforms: novel tissue-specific exons modulate actin binding activity. Hum Mol Genet. 1999 Dec;8(13):2461-72. PMID:10556294
  2. Foisner R, Wiche G. Structure and hydrodynamic properties of plectin molecules. J Mol Biol. 1987 Dec 5;198(3):515-31. PMID:3430617
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