ID:COPG1_HUMAN DESCRIPTION: RecName: Full=Coatomer subunit gamma-1; AltName: Full=Gamma-1-coat protein; Short=Gamma-1-COP; FUNCTION: The coatomer is a cytosolic protein complex that binds to dilysine motifs and reversibly associates with Golgi non- clathrin-coated vesicles, which further mediate biosynthetic protein transport from the ER, via the Golgi up to the trans Golgi network. Coatomer complex is required for budding from Golgi membranes, and is essential for the retrograde Golgi-to-ER transport of dilysine-tagged proteins. In mammals, the coatomer can only be recruited by membranes associated to ADP-ribosylation factors (ARFs), which are small GTP-binding proteins; the complex also influences the Golgi structural integrity, as well as the processing, activity, and endocytic recycling of LDL receptors. Required for limiting lipid storage in lipid droplets. Involved in lipid homeostasis by regulating the presence of perilipin family members PLIN2 and PLIN3 at the lipid droplet surface and promoting the association of adipocyte triglyceride lipase (PNPLA2) with the lipid droplet surface to mediate lipolysis (By similarity). SUBUNIT: Oligomeric complex that consists of at least the alpha, beta, beta', gamma, delta, epsilon and zeta subunits. Interacts with ZNF289/ARFGAP2 through its C-terminal appendage domain. Interacts with EGFR upon EGF treatment; interaction is essential for regulation of EGF-dependent nuclear transport of EGFR by retrograde trafficking from the Golgi to the ER. Interacts with COPB1. Interacts with TMED10 (via C-terminus). Interacts with TMED2, TMED3, TMED7 and TMED9. SUBCELLULAR LOCATION: Cytoplasm. Golgi apparatus membrane; Peripheral membrane protein; Cytoplasmic side. Cytoplasmic vesicle, COPI-coated vesicle membrane; Peripheral membrane protein; Cytoplasmic side (By similarity). Note=The coatomer is cytoplasmic or polymerized on the cytoplasmic side of the Golgi, as well as on the vesicles/buds originating from it (By similarity). SIMILARITY: Belongs to the COPG family. SIMILARITY: Contains 4 HEAT repeats.
The RNAfold program from the Vienna RNA Package is used to perform the secondary structure predictions and folding calculations. The estimated folding energy is in kcal/mol. The more negative the energy, the more secondary structure the RNA is likely to have.
ModBase Predicted Comparative 3D Structure on Q9Y678
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Orthologous Genes in Other Species
Orthologies between human, mouse, and rat are computed by taking the best BLASTP hit, and filtering out non-syntenic hits. For more distant species reciprocal-best BLASTP hits are used. Note that the absence of an ortholog in the table below may reflect incomplete annotations in the other species rather than a true absence of the orthologous gene.
Gene Ontology (GO) Annotations with Structured Vocabulary
Molecular Function: GO:0005198 structural molecule activity GO:0005515 protein binding
Biological Process: GO:0006886 intracellular protein transport GO:0006888 ER to Golgi vesicle-mediated transport GO:0006890 retrograde vesicle-mediated transport, Golgi to ER GO:0015031 protein transport GO:0016192 vesicle-mediated transport GO:0051683 establishment of Golgi localization GO:0072384 organelle transport along microtubule
Protein Q9Y678 (Reactome details) participates in the following event(s):
R-HSA-6807872 Active ARF recruits coatomer R-HSA-6811412 Active ARF recruits coatomer to the Golgi R-HSA-6807875 ARFGAP, cargo, v-SNAREs and p24 proteins bind nascent COPI complex R-HSA-6811417 ARFGAP, cargo, vSNARES and p24 proteins bind COPI vesicles at Golgi R-HSA-6811426 Retrograde COPI vesicles bind kinesin and microtubules R-HSA-6811418 ARFGAPs stimulate ARF GTPase activity at the Golgi membrane R-HSA-6811423 Retrograde vesicle is tethered at the ER by the NRZ complex and t-SNAREs R-HSA-6807877 ARFGAPs stimulate ARF GTPase activity R-HSA-6809003 ERGIC-to-Golgi vesicles bind dynein:dynactin R-HSA-6809011 cis-Golgi t-SNAREs bind YKT6 on tethered vesicle R-HSA-6809006 Vesicle is tethered through binding GOLGA2:GORASP1, GOLGB1 and the COG complex R-HSA-6807878 COPI-mediated anterograde transport R-HSA-6811434 COPI-dependent Golgi-to-ER retrograde traffic R-HSA-199977 ER to Golgi Anterograde Transport R-HSA-8856688 Golgi-to-ER retrograde transport R-HSA-199991 Membrane Trafficking R-HSA-948021 Transport to the Golgi and subsequent modification R-HSA-6811442 Intra-Golgi and retrograde Golgi-to-ER traffic R-HSA-5653656 Vesicle-mediated transport R-HSA-446203 Asparagine N-linked glycosylation R-HSA-597592 Post-translational protein modification R-HSA-392499 Metabolism of proteins
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Microarray Expression Data 
