Multiple genes are required for proper insertion of secretory proteins into the endoplasmic reticulum in yeast.
Rothblatt JA, Deshaies RJ, Sanders SL, Daum G, Schekman R.
J Cell Biol. 1989 Dec;109(6 Pt 1):2641-52. doi: 10.1083/jcb.109.6.2641.PMID: 2687285