What consists of proteins joined together to create fiber like structures inside cells?

Proteins joined together to create fiber-like structures inside cells are known as cytoskeletal proteins, which form the cytoskeleton. This network includes microfilaments, intermediate filaments, and microtubules, each playing essential roles in maintaining cell shape, providing mechanical support, and facilitating cellular movement and division. The cytoskeleton is crucial for various cellular processes, including transport, communication, and maintaining structural integrity.