Schematic representation of the CBS −1b promoter and upstream regions of the promoter from positions −3667 to −4046.

Major transcription factor–binding sites in the CBS −1b basal promoter region from positions −3667 to −3792 (3 GC-boxes, 1 E-box, 1 CAAT-box), and in the upstream regions from positions −3792 to −4046 (3 GC-boxes, 1 GT-box) are represented.