Claim: GABBR1 has been shown to interact with ATF4, a widely expressed mammalian DNA binding protein.
Evidence: GABBR1 has been shown to interact with ATF4 and GABBR2. 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.