Biotin-XX-tyramide，25MG，SML3484-25MG，Sigma

Biochem/physiol Actions

Biotin-XX-tyramide (biotin-XX-phenol; BxxP) is a membrane-impermeant variant of the proximity labeling probe biotin-tyramide (biotin-phenol; BP) that corresponds to BP with a long and polar polyamide linker. Similary to BP, BxxP gives robust biotinylation with HRP and H2O2, but unlike BP, BxxP no longer enters cells, yielding selective labeling of cell surface, but not intracellular, proteins.
Membrane-impermeant variant of biotin-phenol biotin-tyramide (biotin-phenol; BP) for proximity labeling of cell surface, but not intracellular, proteins.