function:Component of the AP-1 transcription factor that represses transactivation mediated by the Jun family of proteins. Involved in a variety of transcriptional responses associated with AP-1 such as UV-induced apoptosis , cell differentiation , tumorigenesis and antitumogeneris. Can also function as a repressor by recruiting histone deacetylase 3/HDAC3 to the promoter region of JUN. May control transcription via direct regulation of the modification of histones and the assembly of chromatin. ,PTM:Phosphorylation of Thr-148 by MAPK8 in response to different stress conditions such as , UV irradiation , oxidatives stress and anisomycin treatments. ,similarity:Belongs to the bZIP family. ATF subfamily. ,similarity:Contains 1 bZIP domain. ,subunit:Forms homodimer or heterodimer with JUN , JUNB , JUND , CEBPG and ATF2 thereby inhibiting transactivation by JUN , ATF2 and CEBPG (By similarity) . Binds multiple DNA elements such as cAMP-response element (CRE) and TPA response element (TRE) either as homodimer or heterodimer. ,
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