This gene encodes a glycosylated phosphoprotein with a
leucine zipper motif, two helix-loop-helix motifs (I repeats) that
are similar to domains found in the TFII-I family of transcription
factors, one CHARLIE8 transposable element-like sequence, and a BED
zinc finger. This gene lies within a region that is deleted in
Williams-Beuren syndrome. Alternatively spliced variants which
encode different protein isoforms have been described; however, not
all variants have been fully characterized.