Section 1.Nuclear Envelope 1.The composition of nuclear envelope What are the characteristics of its composition? 1.Protein:Similar to ER,lamina on inner membrane. 2.Lipids:Similar to ER. This document is produced by trial version of Print2Flash.Visit www.print2flash.com for more information
2.The structure of nuclear envelope Outer membrane Perinuclear Inner membrane Smooth space endoplasmic reticulum Ribosomes Nuclear Nuclear Nucleolus Chromatin Rough pore complex lamina endoplasmic reticulum This document is produced by trial version of Print2Flash.Visit www.print2flash.com for more information
The nuclear envelope consists of two concentric membranes by a perinuclear space. The inner surface of the nuclear envelope is lined by the nuclear lamina: >The nuclear lamina supports the nuclear envelope:Gives shape and stability of nuclear envelope;Provides a structure link between chromatin and nuclear envelope; >The nuclear lamina is composed of lamins; >The integrity of the nuclear lamina is regulated by phosphorylation and dephosphorylation. This document is produced by trial version of Print2Flash.Visit www.print2flash.com for more information
>The phosphorylation of the lamins triggers the disassembly of the nuclear lamina,which in turn cause the nuclear envelope to break up into vesicles.Dephosphorylation of the lamins helps reverse the process. >Old nuclear envelope reforms new nuclear envelope. This document is produced by trial version of Print2Flash.Visit www.print2flash.com for more information
Lamin Nuclear lamina filament (核纤层) 200000008C 0000o8 Lamin tetramer MPF CP PO 1 um Phosphorylated lamin dimers This document is produced by trial version of Print2Flash.Visit www.print2flash.com for more information