Inhibitor of growth protein 3 is a protein that in humans is encoded by the ING3gene.
The protein encoded by this gene is similar to ING1, a tumor suppressor protein that can interact with TP53, inhibit cell growth, and induce apoptosis. This protein contains a PHD-finger, which is a common motif in proteins involved in chromatin remodeling. This gene can activate p53 trans-activated promoters, including promoters of p21/waf1 and bax. Overexpression of this gene has been shown to inhibit cell growth and induce apoptosis. Allelic loss and reduced expression of this gene were detected in head and neck cancers. Two alternatively spliced transcript variants encoding different isoforms have been observed.
^Gunduz M, Ouchida M, Fukushima K, Ito S, Jitsumori Y, Nakashima T, Nagai N, Nishizaki K, Shimizu K (Jun 2002). "Allelic loss and reduced expression of the ING3, a candidate tumor suppressor gene at 7q31, in human head and neck cancers". Oncogene. 21 (28): 4462–70. doi:10.1038/sj.onc.1205540. PMID12080476.
Cai Y, Jin J, Tomomori-Sato C, et al. (2003). "Identification of new subunits of the multiprotein mammalian TRRAP/TIP60-containing histone acetyltransferase complex". J. Biol. Chem. 278 (44): 42733–6. doi:10.1074/jbc.C300389200. PMID12963728.
Ota T, Suzuki Y, Nishikawa T, et al. (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs". Nat. Genet. 36 (1): 40–5. doi:10.1038/ng1285. PMID14702039.
Cai Y, Jin J, Florens L, et al. (2005). "The mammalian YL1 protein is a shared subunit of the TRRAP/TIP60 histone acetyltransferase and SRCAP complexes". J. Biol. Chem. 280 (14): 13665–70. doi:10.1074/jbc.M500001200. PMID15647280.