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. Author manuscript; available in PMC: 2023 Jun 20.
Published in final edited form as: Curr Biol. 2021 Sep 27;31(18):R1077–R1079. doi: 10.1016/j.cub.2021.08.014

Figure 1: The nuclear envelope.

Figure 1:

The nuclear envelope is composed of two membranes (in blue; the inner nuclear membrane (INM) and outer nuclear membrane (ONM)), nuclear pore complexes (NPC; in purple) and a nuclear lamina (in red). Not shown are many inner and outer nuclear membrane proteins that are also part of the nuclear envelope. The ONM is continues with the ER, a single tube of which is shown connected to the nuclear envelope. Green arrows: indicate a hypothetical flow of membrane components from the ER to the nuclear membranes. Orange arrows: indicate a hypothetical force applied on the nuclear membranes when nuclear protein concentration increases.