title: The ubiquitin system as a balance between monomers and polymers in polypeptide structure.
mesh_terms: D000596:Amino Acids / Q000032:analysis; D000818:Animals; D002417:Cattle; D010455:Peptides / Q000032:analysis; D011108:Polymers; D013949:Thymus Extracts
chemical_list: D000596:Amino Acids; D010455:Peptides; D011108:Polymers; D013949:Thymus Extracts