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Updated: Jun 12, 2026

Identification of Small Molecule-binding Proteins in a Native Cellular Environment by Live-cell Photoaffinity Labeling
Published on: September 20, 2016
A new tool for photoaffinity labeling studies: a partially constrained, benzophenone based, alpha-amino acid
Karen Wright1, Alessandro Moretto, Marco Crisma
1ILV, UMR CNRS 8180, University of Versailles, 78035 Versailles, France. wright@chimie.uvsq.fr
Abstract:
The novel alpha-amino acid BpAib, a partially conformationally restricted analogue of the currently extensively used 3-(4-benzoylphenyl)alanine (Bpa) photoaffinity label, was synthesized, optically resolved, fully characterized, and appropriately derivatized. An intermolecular photocrosslinking experiment highlighted its regioselective reactivity towards the S-methyl side-chain group of a Met-based dipeptide, which is closely comparable to that of Bpa.

