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Eps15 homology domain (EHD), C-terminal domain Dynamin-like C-terminal Eps15 homology domain (EHD) proteins regulate endocytic events; they have been linked to a number of Rab proteins through their association with mutual effectors, suggesting a coordinate role in endocytic regulation. Eukaryotic EHDs comprise four members (EHD1-4) in mammals and single members in Caenorhabditis elegans (Rme-1), Drosophila melanogaster (Past1) as well as several eukaryotic parasites. EHD1 regulates trafficking of multiple receptors from the endocytic recycling compartment (ERC) to the plasma membrane; EHD2 regulates trafficking from the plasma membrane by controlling Rac1 activity; EHD3 regulates endosome-to-Golgi transport, and preserves Golgi morphology; EHD4 is involved in the control of trafficking at the early endosome and regulates exit of cargo toward the recycling compartment as well as late endocytic pathway. Rme-1, an ortholog of human EHD1, controls the recycling of internalized receptors from the endocytic recycling compartment to the plasma membrane. In D. melanogaster, deletion of the Past1 gene leads to infertility as well as premature death of adult flies. Arabidopsis thaliana also has homologs of EHD proteins (AtEHD1 and AtEHD2), possibly involved in regulating endocytosis and signaling. |
Jiyao W et al.(2023). "The conserved domain database in 2023.",