cell adhesion

An integrin is a transmembrane protein that is sensitive to signals received both from inside the cell and from its external environment. In its outer part it includes a binding site consisting of a sequence of three defined amino acids. In its internal part it includes a link to a material called Talin. In this way, the protein communicates between the inside of the cell and its external environment. Illustration: from Wikipedia

Integrin clusters are the universal units for cell adhesion

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