| Function | Small GTPase involved in protein trafficking between different compartments. Modulates vesicle budding and uncoating within the Golgi complex. In its GTP-bound form, triggers the recruitment of coatomer proteins to the Golgi membrane. The hydrolysis of ARF1-bound GTP, which is mediated by ARFGAPs proteins, is required for dissociation of coat proteins from Golgi membranes and vesicles. The GTP-bound form interacts with PICK1 to limit PICK1-mediated inhibition of Arp2/3 complex activity.the function is linked to AMPA receptor (AMPAR) trafficking, regulation of synaptic plasticity of excitatory synapses and spine shrinkage during long-term depression (LTD). Plays a key role in the regulation of intestinal stem cells and gut microbiota, and is essential for maintaining intestinal homeostasis. Plays also a critical role in mast cell expansion but not in mast cell maturation by facilitating optimal mTORC1 activation. |
| Peptide Name | Adp-Ribosylation Factor 1 |
| Database Links | Reactome: R-RNO-1660499Reactome: -RNO-1660514Reactome: -RNO-199992Reactome: -RNO-2132295Reactome: -RNO-432720Reactome: -RNO-432722Reactome: -RNO-6807878Reactome: -RNO-6811434Reactome: -RNO-6811438Reactome: -RNO-9845576 |
| Cellular Localisation | Golgi Apparatus MembraneLipid-AnchorCytoplasmic SideSynapseSynaptosomePostsynaptic DensityIn The Gdp-Bound FormAssociates Transiently With The Membranes Via Its Myristoylated N-Terminus Where Guanine Nucleotide-Exchange Factor (Gef)-Mediated Nucleotide Exchange OccursFollowing Nucleotide ExchangeThe Gtp-Bound Form Undergoes A Conformational ChangeLeading To The Exposure Of A Myristoylated N-Terminal Amphipathic Helix That Provides Stable Membrane Anchorage |
| Alternative Peptide Names | Adp-Ribosylation Factor 1 proteinArf1 protein |
Information sourced from Uniprot.org
