Biocytetin CAS: 576-19-2 is a complex of lysine and biotin that can be used as an intracellular marker. It is hydrolyzed by biotinidase, acting on peptide-bound biotin or free biotin. Primary amines can be cross-linked to protein or molecular surfaces using EDC. Biotinylated lysine can be used as a quencher in biotin assays. Biocytetin has been used to label neurons, medium spiny neurons, and optic nerves.
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