Cadherins are primarily composed of what type of molecule?

Cadherins are primarily composed of glycoproteins, which are molecules consisting of a protein component covalently bonded to carbohydrate groups. This structure enables cadherins to participate effectively in cell adhesion, facilitating the formation of stable connections between neighboring cells. The protein portion of cadherins is responsible for their role in linking cells together through adherens junctions, which are critical for maintaining tissue integrity and function.

The glycosylation of cadherins, denoted by the carbohydrate groups attached to the protein, contributes to their adhesive properties, stability, and the regulation of their interactions with other molecules. This aspect is crucial for the proper functioning of various biological processes, including tissue development and cell signaling. Thus, the classification of cadherins as glycoproteins highlights the dual significance of both their protein and carbohydrate components in their biological roles.