Question
Explain the role of proteins in cell adhesion and communication with suitable examples.
Answer :
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Proteins play a vital role in cell adhesion and communication by enabling cells to attach to each other and transmit signals necessary for growth, development, and survival. Cell adhesion is primarily mediated by specialized proteins known as cell adhesion molecules (CAMs), which are present on the cell surface. These proteins help maintain tissue structure and integrity. Major types of CAMs include cadherins, integrins, selectins, and immunoglobulin superfamily proteins. Cadherins are calcium-dependent proteins that facilitate strong cell-to-cell adhesion, especially in epithelial tissues. For example, E-cadherin helps maintain the structure of
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