KAT2A, or GCN5, is a histone acetyltransferase (HAT) that functions primarily as a transcriptional activator. It also functions as a repressor of NF-kappa-B (see MIM 164011) by promoting ubiquitination of the NF-kappa-B subunit RELA (MIM 164014) in a HAT-independent manner (Mao et al., 2009 [PubMed 19339690]).[supplied by OMIM, Sep 2009],KAT2A,GCN5,GCN5L2,PCAF-b,hGCN5,Epigenetics & Nuclear Signaling,Chromatin Modifying Enzymes,Acetylation,Nuclear Receptor Signaling,Signal Transduction,Cell Biology & Developmental Biology,Notch Signaling Pathway,KAT2A