A short SUMOylation tag modulates transcription factor activity.

ABSTRACT: SUMOylation is a posttranslational modification that regulates multiple aspects of protein biology, including the activity of transcription factors such as p53. Although strategies exist to decrease protein SUMOylation in a targeted manner, options are limited to increase SUMOylation in a protein-specific manner. Here, we developed a strategy to induce SUMOylation of a target protein relying on its genetic fusion to a 32-residue tag termed ZNF and composed of the SUMO E3 module of ZNF451. Through in vitro and cell-based assays, we establish that this SUMOylation tag promotes robust poly/multi-SUMOylation of p53, used as a model substrate, with a strong preference for SUMO2/3 as compared to SUMO1. Mass spectrometry experiments performed on transfected HEK293 cells stably expressing a modifi

SUBMITTER: Bouchard AY 

PROVIDER: S-EPMC12630355 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature