Interferon-stimulated protein that plays a role in several biological processes including cell differentiation, autophagy and innate immunity. Cooperates with CGAS to sense dsDNA and activates the STING-dependent type I IFN pathway. Mechanistically, gets acteylated upon bacterial infection and then translocates from nucleus into cytoplasm to recruit STING for activation of TBK1-dependent IRF3 nuclear translocation and IFN-beta release. Inhibits the transcription of ribosomal RNA. May inhibit DNA binding by UBTF. Inhibits cell growth via p53/TP53 and RB1-dependent and independent pathways. Acts as a coactivator of RUNX2 during osteogenesis. May be involved in macrophage differentiation. Enables skeletal muscle and cardiac myocyte differentiation by sequestring Id proteins in the cytosol and promoting their ubiquitination and subsequent degradation.

> 90% as determined by SDS-PAGE.