A protein with a basic DNA binding domain and a basic leucine zipper dimerization domain that affects transcription.
Source:IPR:004827
Comment
The basic region of the basic-leucine zipper domain (bZIP) determines DNA binding specificity and the leucine zipper region is responsible for dimerization. The bZIP domains can be subdivided into three classes (bZIP_1, bZIP_Maf and bZIP_2).