Transcriptional activator that binds specifically to the DNA sequence 5'-[AG]CCGAC-3'. Binding to the C-repeat/DRE element mediates abscisic acid- and dehydration-inducible transcription. CBF/DREB1 factors play a key role in freezing tolerance and cold acclimation. By high-salt stress, drought stress and abscisic acid (ABA) treatment. Belongs to the AP2/ERF transcription factor family. ERF subfamily. Extended C-terminus.