Fig. 3: Established and emerging chemical design strategies employed to generate protein-based therapeutics.
From: Engineering protein-based therapeutics through structural and chemical design

a Site-specific mutagenesis. b Antibody-drug conjugates. c PEGylation. d Fc fusion. e Fusion to other proteins. f Glycosylation. g Lipidation. h Computational. i Supercharging. j Attachment of non-PEG polymers. k Fusion to other partners. l Unnatural amino acids. The structure shown in (h) represents neoleukin (NL)ā2/15 (PDB ID: 6DG6) which is a predecessor to NL-201, the worldās first de novo protein therapeutic.