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. This protein shows 4 potential triple-helical regions, which contain glycine as every third amino acid. In all nematode cuticle collagens, the polypeptide chains are complexed within the cuticle by disulfide bonds and other types of covalent cross-links. Belongs to the cuticular collagen family.