The intrinsically disordered protein NUPR1 binds to phospholipids.

ABSTRACT: The nuclear protein 1 (NUPR1) is an intrinsically disordered protein (IDP) involved in stress-mediated cellular conditions, with an interactome including many other partner proteins, as well as nucleic acids. We wondered whether its great conformational flexibility and biological versatility could include interactions with lipids. Binding between NUPR1 and phosphatidylserine (PS) and phosphatidylinositol biphosphate (PIP2) was verified in cellulo by using proximity ligation assay (PLA) techniques in MiaPaCa-2 cells. Binding in vitro was assayed against PS, and against PS in a mixture with phosphatidylcholine (PC), and it was confirmed by using nuclear magnetic resonance (NMR) and biolayer interferometry (BLI). Furthermore, results in silico also showed the association between NUPR1 and the

SUBMITTER: Estaras M 

PROVIDER: S-EPMC12278693 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature