D site-binding protein (DBP)

This transcriptional activator recognizes and binds to the sequence 5'-RTTAYGTAAY-3' found in the promoter of genes such as albumin, CYP2A4 and CYP2A5. It's not vital for circadian rhythm generation, but modulates important clock output genes.

May be a direct target for regulation by the circadian pacemaker element clock. May affect circadian period and sleep regulation.