Schematic presentation of the human

CD23a proximal promoter. Sequence analysis of theCD23a core promoter region revealed a complex array of potential regulatory elements, including CBF1, STAT6, NF-κB, Pax5 (BSAP), Ikaros, GATA1-3, LMO2, and MZF1. EMSA probes are indicated as double-headed arrows below the sequence. The relative position of the transcriptional start site (arrow) is indicated according to Gene Bank (EMBL) accession no. X06049.