Western blot analysis of ATF4 (arrow) using rabbit ATF4 polyclonal antibody (Cat # PAB4874). 293 cell lysate (2 ug/lane) either nontransfected (Lane 1) or transiently transfected with the ATF4 gene (Lane 2) (Origene Technologies).
This gene encodes a transcription factor that was originally identified as a widely expressed mammalian DNA binding protein that could bind a tax-responsive enhancer element in the LTR of HTLV-1. The encoded protein was also isolated and characterized as the cAMP-response element binding protein 2 (CREB-2). The protein encoded by this gene belongs to a family of DNA-binding proteins that includes the AP-1 family of transcription factors, cAMP-response element binding proteins (CREBs) and CREB-like proteins. These transcription factors share a leucine zipper region that is involved in protein-protein interactions, located C-terminal to a stretch of basic amino acids that functions as a DNA binding domain. Two alternative transcripts encoding the same protein have been described. Two pseudogenes are located on the X chromsome at q28 in a region containing a large inverted duplication. [provided by RefSeq
activating transcription factor 4,cAMP response element-binding protein 2