umls-concept:C0036425 | skos:definition | MSH: Simple proteins characterized by their insolubility and fibrous structure. Within the body, they perform a supportive or protective function.,CSP: family of large proteins characterized by tendency to aggregate into insoluble fibers and plaques; found in intermediate filaments, extracellular matrix, cartilage, hair, nails, and elsewhere. | lld:umls |