CTIF is involved in mRNA export in human cells

Rufener, Simone (3 June 2014). CTIF is involved in mRNA export in human cells (Unpublished). In: 19th Annual Meeting of the RNA society. Quebec, Kanada. 03.06.-08.06.2014.

In eukaryotic cells, translation of messenger RNA (mRNA) can be initiated either on transcripts associated with the cap-binding complex (CBC; consisting of CBP80 and CBP20) or on transcripts with the eukaryotic translation initiation factor (eIF) 4E bound to the cap. Together with eIF4G and eIF4A, eIF4E forms the eIF4F-complex, which mediates translation initiation during the bulk of cellular protein synthesis. Functionally substituting for eIF4G, the CBP80/20-dependent translation initiation factor (CTIF) has been reported to be part of the CBC-dependent translation initiation complex 1,2. CTIF consists of a N-terminal CBP80-binding domain and a conserved C-terminal MIF4G domain 1. This MIF4G domain has been shown to mediate the interaction between CTIF and different factors such as eIF3g and the stem-loop binding protein (SLBP) 2,3. Here we provide evidence that CTIF, besides its function in translation initiation, is also involved in mRNA translocation from the nucleus to the cytoplasm, possibly through a direct interaction with the nuclear export factor NFX1/TAP. Taken together our results suggest that CTIF can function as a platform that interacts with proteins involved in different steps of the mRNA metabolism.

Item Type:

Conference or Workshop Item (Poster)


08 Faculty of Science > Departement of Chemistry and Biochemistry

Graduate School:

Graduate School for Cellular and Biomedical Sciences (GCB)

UniBE Contributor:

Rufener, Simone


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




Christina Schüpbach

Date Deposited:

23 Dec 2014 14:20

Last Modified:

15 Jan 2016 11:50



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