Identification of mono-ADP-ribose readers using well-defined photoaffinity-based probes.

ABSTRACT: Adenosine diphosphate ribosylation is a significant post-translational modification implicated in various cellular processes and diseases, yet identifying its mono-ADP-ribose readers has posed considerable challenges. Previous proteomic screenings have predominantly focused on poly-ADP-ribose, resulting in the oversight of mono-ADP-ribose readers due to undefined ADP-ribose structures with randomly placed photo-crosslinking moieties. This study introduces novel, well-defined mono-ADP-ribose photoaffinity-based probes featuring distinct diazirine and benzophenone photo-crosslinkers aimed at selectively identifying mono-ADP-ribose readers. Using human HeLa protein extracts, these probes were employed in an interactomics screening, successfully uncovering numerous known and putative mono-ADP-

SUBMITTER: van der Heijden FLAM 

PROVIDER: S-EPMC12679546 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature