Description
Ac4ManNDAz is a cell-permeable photo-crosslinking probe for studying glycoprotein or glycolipid interactions. The compound is an unnatural diazirine-containing monosaccharide building block, which acts as a photo-crosslinker. Once inside the cell, Ac4ManNDAz is metabolized and incorporated as photo-crosslinking sialic acid analogs into cell surface glycoproteins. Upon photoactivation with UV irradiation, the sialic acid appended diazirine is activated to a reactive carbene that covalently crosslinks to nearby molecules.