This entry represents a group of eukaryotic and archaeal proteins. Eukaryotic members include EMC3, a subunit of the ER membrane protein complex (EMC) required for protein folding [1], and TMCO1, a ER calcium load-activated calcium channel [2]. Archaeal members may function as insertases of the archaeal plasma membrane [3].

1: Comprehensive characterization of genes required for protein folding in the endoplasmic reticulum. Jonikas MC, Collins SR, Denic V, Oh E, Quan EM, Schmid V, Weibezahn J, Schwappach B, Walter P, Weissman JS, Schuldiner M; Science. 2009;323:1693-1697. PMID:19325107

2: TMCO1 Is an ER Ca(2+) Load-Activated Ca(2+) Channel. Wang QC, Zheng Q, Tan H, Zhang B, Li X, Yang Y, Yu J, Liu Y, Chai H, Wang X, Sun Z, Wang JQ, Zhu S, Wang F, Yang M, Guo C, Wang H, Zheng Q, Li Y, Chen Q, Zhou A, Tang TS; Cell. 2016;165:1454-1466. PMID:27212239

3: A YidC-like Protein in the Archaeal Plasma Membrane. Borowska MT, Dominik PK, Anghel SA, Kossiakoff AA, Keenan RJ; Structure. 2015;23:1715-1724. PMID:26256539