RESUMO
Here, we present N-Gly-specific glyoxamide generation in native proteins, isolated or in a complex mixture. The resulting aldehyde enables parallel installation of probes and a purification platform to render analytically pure single-site tagged proteins. It renders N-Gly engineered insulin without perturbing its structure, receptor binding, and downstream signaling pathway.
Assuntos
Aldeídos , Glicina , Glicina/química , Aldeídos/química , Proteínas/química , Indicadores e Reagentes , InsulinaRESUMO
We report a chemoselective, site-selective, and modular technology for precision engineering of high-frequency lysine residues in native proteins. It enables a unique, unexplored reactivity landscape on the protein surface to facilitate their single-site modification. Further, the method presents bond-architecture flexibility and enables orthogonal tagging with probes of interest.