Domain

DEP domain (IPR000591)

Short name: DEP_dom

Domain relationships

Description

This entry represents the DEP (Dishevelled, Egl-10 and Pleckstrin) domain, a globular domain of about 80 residues that is found in over 50 proteins involved in G-protein signalling pathways. It was named after the three proteins it was initially found in:

  • Dishevelled (Dsh and Dvl), which play a key role in the transduction of the Wg/Wnt signal from the cell surface to the nucleus; it is a segment polarity protein required to establish coherent arrays of polarized cells and segments in embryos, and plays a role in wingless signalling.
  • Egl-10, which regulates G-protein signalling in the central nervous system.
  • Pleckstrin, the major substrate of protein kinase C in platelets; Pleckstrin contains two PH domains flanking the DEP domain.

Mammalian regulators of G-protein signalling also contain these domains, and regulate signal transduction by increasing the GTPase activity of G-protein alpha subunits, thereby driving them into their inactive GDP-bound form. It has been proposed that the DEP domain could play a selective role in targeting DEP domain-containing proteins to specific subcellular membranous sites, perhaps even to specific G protein-coupled signaling pathways [PMID: 10987813, PMID: 11101902]. Nuclear magnetic resonance spectroscopy has revealed that the DEP domain comprises a three-helix bundle, a beta-hairpin 'arm' composed of two beta-strands and two short beta-strands in the C-terminal region [PMID: 11101902].

GO terms

Biological Process

GO:0035556 intracellular signal transduction

Molecular Function

No terms assigned in this category.

Cellular Component

No terms assigned in this category.

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.
Pfam
SMART
PROSITE profiles