<unk> s are a class of nanostructure composed of protein-polymer conjugates (i.e. complexes composed of one protein attached to one or more<unk>  chains). The protein component generally gives the advantages of biocompatibility and biodegradability, as many proteins are produced naturally by the body and are therefore well tolerated and metabolized. Although proteins are used as targeted therapy drugs, the main limitations—the lack of stability and insufficient circulation times still remain. Therefore protein-polymer conjugates have been investigated to further enhance pharmacologic behavior and stability. By adjusting the chemical structure of the protein-polymer conjugates,<unk> -protein particles with unique structures and functions, such as stimulus responsiveness, enrichment in specific tissue types, and enzyme activity, can be synthesized.<unk> -protein particles have been the focus of much research recently because they possess potential uses including bioseparations, imaging, biosensing, gene and drug delivery. Structure of a<unk>  conjugate
Polymer-protein hybrid
Bioactive compound
Immunoconjugate
Polysaccharide peptide
Mutagen
Tetrameric protein
Glycol nucleic acid
Azo compound