Probing interactions of NMD factors in a distance-dependent manner by BioID

Schweingruber, Christoph (3 June 2014). Probing interactions of NMD factors in a distance-dependent manner by BioID (Unpublished). In: 19th Annual Meeting of the RNA Society. Quebec, Kanada. 03.06.-08.06.2014.

The understanding of molecular mechanisms requires the elucidation of protein-protein interaction in vivo. For large multi-factor complexes like those assembling on mRNA, co-immunoprecipitation assays often identify many peripheral interactors that complicate the interpretation of such results and that might conceal other insightful mechanistic connections. Here we address the protein-protein interaction network for key factors in the nonsense-mediated mRNA decay (NMD) pathway in a distant-dependent manner using BioID1,2. In this novel approach, the mutant E. coli biotin-protein ligase BirAR118G is fused to the bait protein and biotinylates proximal proteins promiscuously. Hence, interactors positioned close to the bait in vivo are enriched by streptavidin purification and identified by mass spectrometry or western blotting. We present a validation of the BioID assay and preliminary results for close interactors of UPF1 and other key players in NMD.

Item Type:

Conference or Workshop Item (Poster)


08 Faculty of Science > Departement of Chemistry and Biochemistry

UniBE Contributor:

Schweingruber, Christoph


500 Science > 570 Life sciences; biology
500 Science > 540 Chemistry




Christina Schüpbach

Date Deposited:

23 Dec 2014 14:27

Last Modified:

23 Dec 2014 14:27


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