UniprotKB/SwissProt ID: HACE1_HUMAN (Q8IYU2)
Gene Name: HACE1
Synonyms: KIAA1320
Organism: Homo sapiens (Human).
Function: E3 ubiquitin-protein ligase involved in Golgi membrane fusion and regulation of small GTPases. Acts as a regulator of Golgi membrane dynamics during the cell cycle: recruited to Golgi membrane by Rab proteins and regulates postmitotic Golgi membrane fusion. Acts by mediating ubiquitination during mitotic Golgi disassembly, ubiquitination serving as a signal for Golgi reassembly later, after cell division. Specifically interacts with GTP-bound RAC1, mediating ubiquitination and subsequent degradation of active RAC1, thereby playing a role in host defense against pathogens. May also act as a transcription regulator via its interaction with RARB.
Other Modifications: View all modification sites in dbPTM
Protein Subcellular Localization: Golgi apparatus, Golgi stack membrane. Cytoplasm. Endoplasmic reticulum. Note=A significant portion localizes to the endoplasmic reticulum. Targeted to Golgi membrane via its interaction with Rab proteins.
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