Nematode cuticles are composed largely of collagen-like proteins. The cuticle functions both as an exoskeleton and as a barrier to protect the worm from its environment. Collagen polypeptide chains are complexed within the cuticle by disulfide bonds and other types of covalent cross-links. Syncytial dorsal and ventral epidermis. Low level expression from embryos at comma stage to adult; maximal level in dauer larvae. Belongs to the cuticular collagen family.