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BCN-E-BCN is a strained cycloalkyne probe for detecting proteins that have been sulfenylated, the first intermediate step in protein oxidation. BCN-E-BCN is selective for the sulfenic acid form of thiol oxidation and does not label free thiol, sulfinic, or sulfonic forms of proteins. The BCN-E-BCN protein conjugate can be detected using copper-free click chemistry to attach azide-bearing biotin or fluorescent tags. It is highly reactive and faster-acting than other sulfenic acid probes. | [References]
[1] DAVID J. MCGARRY. A Cell-Permeable Biscyclooctyne As a Novel Probe for the Identification of Protein Sulfenic Acids[J]. ACS Chemical Biology, 2016, 11 12: 3300-3304. DOI: 10.1021/acschembio.6b00742 |
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