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. 2011 Jul 22;30(16):3217–3231. doi: 10.1038/emboj.2011.233

Figure 9.

Figure 9

Model of retention of monotopic lumenal proteins within the ER. Monotopic lumenal proteins associate with the lumenal leaflet of the ER. This membrane association favours partitioning away from sites of ER-to-Golgi transport. This effect on protein sorting may be achieved by monotopic domains selectively partitioning into less ordered bilayers (box i) or less curved bilayers (box ii).