The addition of COPII proteins and adaptor proteins to ER membranes during the formation of transport vesicles, forming a vesicle coat. [ GOC:ascb_2009 GOC:tb GOC:jid GOC:mah http://www.ncbi.nlm.nih.gov/pubmed/10219233 GOC:dph https://www.worldcat.org/search?q=bn%3A0716731363 ]

Synonyms: COPII coating of ER-derived vesicle COPII vesicle coat assembly COPII vesicle coat formation

This is just here as a test because I lose it