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Moleculararchitecture andfunction of thehemidesmosome Gernot WalkoM CastañónGerhard Wiche2014 год

Molecular architecture and function of the hemidesmosome
review

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Аннотация: Hemidesmosomes are multiprotein complexes that facilitate the stable adhesion of basal epithelial cells to the underlying basement membrane. The mechanical stability of hemidesmosomes relies on multiple interactions of a few protein components that form a membrane-embedded tightly-ordered complex. The core of this complex is provided by integrin α6β4 and P1a, an isoform of the cytoskeletal linker protein plectin that is specifically associated with hemidesmosomes. Integrin α6β4 binds to the extracellular matrix protein laminin-332, whereas P1a forms a bridge to the cytoplasmic keratin intermediate filament network. Other important components are BPAG1e, the epithelial isoform of bullous pemphigoid antigen 1, BPAG2, a collagen-type transmembrane protein and CD151. Inherited or acquired diseases in which essential components of the hemidesmosome are missing or structurally altered result in tissue fragility and blistering. Modulation of hemidesmosome function is of crucial importance for a variety of biological processes, such as terminal differentiation of basal keratinocytes and keratinocyte migration during wound healing and carcinoma invasion. Here, we review the molecular characteristics of the proteins that make up the hemidesmosome core structure and summarize the current knowledge about how their assembly and turnover are regulated by transcriptional and post-translational mechanisms.
Год издания: 2014
Авторы: Gernot Walko, M Castañón, Gerhard Wiche
Издательство: Springer Science+Business Media
Источник: Cell and Tissue Research
Ключевые слова: Skin and Cellular Biology Research, Autoimmune Bullous Skin Diseases, Cell Adhesion Molecules Research
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Research Portal (King's College London) (PDF)
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