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A vesicle with a coat formed of the COPI coat complex proteins. COPI-coated vesicles are found associated with Golgi membranes at steady state, are involved in Golgi to endoplasmic reticulum (retrograde) vesicle transport, and possibly also in intra-Golgi transport. [GOC:mah, PMID:11252894]
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OBSOLETE. (Was not defined before being made obsolete). [GOC:go_curators]
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OBSOLETE. The addition of COPI proteins and adaptor proteins to ER membranes during the formation of transport vesicles, forming a vesicle coat. [GOC:rb, PMID:11970962]
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One of two multimeric complexes that forms a membrane vesicle coat. The mammalian COPI subunits are called alpha-, beta-, beta\'-, gamma-, delta-, epsilon- and zeta-COP. Vesicles with COPI coats are found associated with Golgi membranes at steady state. [GOC:mah, PMID:11252894]
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