Nuclear membrane pore. Illustration of the structure of a pore in the membrane (envelope) of a cell nucleus. These pores contain proteins that control and facilitate the movement of molecules into and out of the nucleus, especially ones related to nucleic acids such as DNA and RNA. The nuclear envelope (blue) is a double membrane. The nuclear pore (orange) consists of a central channel (cylindrical), a nuclear basket (bottom), cytoplasmic filaments (top), and a ring of proteins (centre). For this artwork with labels, see image C023/8733.
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