ILF2
Function
Chromatin-interacting protein that forms a stable heterodimer with interleukin enhancer-binding factor 3/ILF3 and plays a role in several biological processes including transcription, innate immunity or cell growth (PubMed:18458058, PubMed:31212927). Essential for the efficient reshuttling of ILF3 (isoform 1 and isoform 2) into the nucleus. Together with ILF3, forms an RNA-binding complex that is required for mitotic progression and cytokinesis by regulating the expression of a cluster of mitotic genes. Mechanistically, competes with STAU1/STAU2-mediated mRNA decay (PubMed:32433969). Also plays a role in the inhibition of various viruses including Japanese encephalitis virus or enterovirus 71.
(Microbial infection) Plays a positive role in HIV-1 virus production by binding to and thereby stabilizing HIV-1 RNA, together with ILF3.
Post-translational modifications
Ubiquitinated at Lys-45 by CRBN with polyubiquitin chains by the CUL4-RING E3 ligase (CRL4-CRBN) and then degraded by the proteasome.
Cellular localization
- Nucleus
- Nucleolus
- Cytoplasm
- Nucleus
- Localized in cytoplasmic mRNP granules containing untranslated mRNAs.
Alternative names
NF45, PRO3063, ILF2, Interleukin enhancer-binding factor 2, Nuclear factor of activated T-cells 45 kDa