Controlling protein stability with SULI, a highly sensitive tag for stabilization upon light induction

Nat Commun. 2023 Apr 15;14(1):2172. doi: 10.1038/s41467-023-37830-0.

Abstract

Optogenetics tools for precise temporal and spatial control of protein abundance are valuable in studying diverse complex biological processes. In the present study, we engineer a monomeric tag of stabilization upon light induction (SULI) for yeast and zebrafish based on a single light-oxygen-voltage domain from Neurospora crassa. Proteins of interest fused with SULI are stable upon light illumination but are readily degraded after transfer to dark conditions. SULI shows a high dynamic range and a high tolerance to fusion at different positions of the target protein. Further studies reveal that SULI-mediated degradation occurs through a lysine ubiquitination-independent proteasome pathway. We demonstrate the usefulness of SULI in controlling the cell cycle in yeast and regulating protein stability in zebrafish, respectively. Overall, our data indicate that SULI is a simple and robust tool to quantitatively and spatiotemporally modulate protein levels for biotechnological or biomedical applications.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Fungal Proteins / chemistry
  • Optogenetics* / methods
  • Protein Domains
  • Protein Engineering* / methods
  • Protein Stability*
  • Saccharomyces cerevisiae
  • Zebrafish

Substances

  • Fungal Proteins