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Activating transcription factor 3 (ATF3)is a member of the mammalian activation transcription factor/cAMP responsive element-binding (CREB) protein family of transcription factors. It encodes a protein with a calculated molecular mass of 22 kD. ATF3 represses rather than activates transcription from promoters with ATF binding elements. An alternatively spliced form of ATF3 (ATF3 delta Zip) encodes a truncated form ATF3 protein lacking the leucine zipper protein-dimerization motif and does not bind to DNA. In contrast to ATF3, ATF3 delta Zip stimulates transcription presumably by sequestering inhibitory co-factors away from the promoter. It is possible that alternative splicing of the ATF3 gene may be physiologically important in the regulation of target genes.
Gene Name: | activating transcription factor 3 |
Family/Subfamily: | Transcription factor , not assigned-Transcription factor |
Synonyms: | ATF3 |
Target Sequences: | NM_001674 NP_004015.4 P18847 |
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