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Epidermal Cell Desmosomal Plaque

Molecular classification: Multiprotein complex, Structural protein complex

Overview

The epidermal cell desmosomal plaque is a specialized, electron-dense structure located on the cytoplasmic side of desmosomes. It serves as a critical anchoring site for intermediate filaments (primarily keratins), providing mechanical strength and integrity to tissues that experience significant physical stress. The plaque is composed of an outer dense plaque (ODP), containing plakoglobin and plakophilin which link cadherins to the inner plaque, and an inner dense plaque (IDP), primarily consisting of desmoplakin, which tethers intermediate filaments to the junction.

Biological functions

Cell-cell adhesionAnchoring intermediate filamentsMechanical stress distributionTissue morphogenesisTissue differentiationMaintenance of tissue architecture

Disease associations

Pemphigus vulgarisArrhythmogenic right ventricular cardiomyopathyBlistering disordersLoss of tissue integrity

Safety considerations

Compromised cell adhesionTissue fragility

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