transcription factor HES-3 (hairy & enhancer of split 3)

Function

• transcriptional repressor of genes that require a bHLH protein for their transcription
• transcription repression requires formation of complex with corepressor protein (Groucho)

Structure

• has a particular type of basic domain (presence of a helix- interrupting proline) that binds to the N-box (CACNAG), rather than the canonical E-box (CANNTG)
• C-terminal WRPW motif is a transcriptional repression domain necessary for the interaction with Groucho, a transcriptional corepressor recruited to specific target DNA by Hairy-related proteins
• contains 1 basic helix-loop-helix (bHLH) domain
• contains 1 Orange domain

Compartment

nucleus

More general terms

• transcriptional silencer (transcriptional repressor)
• hairy & enhancer of split (HES)

Database

• UniProt: http://www.uniprot.org/uniprot/Q5TGS1.html