What characterizes fibrous proteins compared to globular proteins?

Fibrous proteins are primarily characterized by their structural roles in the body, which provide support, shape, and strength to various tissues. They typically have elongated, linear structures, allowing them to form significant frameworks for cells and tissues. This contrasts with globular proteins, which are generally more compact and spherical, serving functions such as catalysis (enzymes), transport, and regulation due to their ability to interact with other molecules more effectively.

The role of fibrous proteins, such as collagen in connective tissues or keratin in hair and nails, is essential in maintaining the integrity and mechanical properties of these structures. This structural support is critical for the overall functionality of tissues, differentiating fibrous proteins from their globular counterparts, which are more involved in metabolic processes rather than providing physical structure.