Ultraviolet nanophotonics enables autofluorescence correlation spectroscopy on label-free proteins with a single tryptophan

Jan 13, 2023 (Nanowerk News) Proteins are naturally fluorescent in the ultraviolet, offering an appealing approach to probe proteins in their native state without introducing any external fluorescent label. The UV autofluorescence of proteins is based on the presence of tryptophan amino acids, which typically occur as 1 to 5...