第10章纟 细胞核与染色质 Nucleus 30-nm Interphase fiber mosom Higher-order chromatin folding Loops of 30-nm fiber "Beads on a string' Mitochondrion Nucleosome
第10章 细胞核与染色质
本章主要内容 原R发草发包。 ·核被膜 内质网 核周间隙一 ·染色质 外核膜 内核膜 核纤 ·染色质的复制与表达 核孔 染色质 。 染色体 核仁与核体 ·核基质
本章主要内容 • 核被膜 • 染色质 • 染色质的复制与表达 • 染色体 • 核仁与核体 • 核基质
第一节核被膜 Outer membrane Inner membrane Perinuclear Smooth space endoplasmic reticulum Ribosomes Nuclear Chromatin Nuclear lamina Rough pore complex Nucleolus endoplasmic reticulum http://faculty.samford.edu/-djohnso 2/44962/405/nucleus.html
第一节 核被膜 http://faculty.samford.edu/~djohnso 2/44962/405/nucleus.html
核膜 Ribosome Microfilament ER lumen Nesprin 1/2 LBR MAN1 Emerin ONM LAP2 BAF PNS SUN1/2 INM Chromatin- Nuclear lamina NPC http://wwww.sciencemag.org/content/318/5855/1408/F1.large.jpg
一、核膜 http://www.sciencemag.org/content/318/5855/1408/F1.large.jpg
(一)核膜结构 (a)The nuclear envelope has a double membrane. Nuclear envelope Rough ER Cytoplasm Ribosome Figure 7-22a Biological Science,2/e 2005 Pearson Prentice Hall,Inc
(一)核膜结构
(一) 核膜结构 NUCLEOPLASM Inner membrane Nuclear of nuclear envelope pore complex ←-120nm “Basket' of fibers Anchor Cytoplasm Nuclear protein Peripheral ER lamina Ring subunit Spoke Outer ONM membrane Transporter of nuclear INM envelope Fiber Nuclear lamina Endoplasmic reticulum Nucleoplasm Ribosomes CYTOSOL (b)Location of nuclear pores in nuclear membrane 2012 Pearson Education,Inc
(一)核膜结构
(二) 核膜的崩解与组装 Prophase -Chromosome -Nuclear Lamina -Mitotic spindle O LAP2 Emerin Interphase Metaphase ●SUN1 Centrosome Nuclear pore complex Telophase Anaphase
(二)核膜的崩解与组装
Breakdown and reformation of nuclear envelope during mitosis nuclear pore lamins DNA complex. nuclear inner nuclear membrane nuclear envelope outer nuclear membrane PHOSPHORYLATION pore FUSION OF ENVELOPED OF LAMINS complex phosphorylated proteins CHROMOSOMES lamins INTERPHASE NUCLEUS chromatid nuclear chromosome envelope LATE fragment TELOPHASE PROPHASE FUSION OF NUCLEAR DEPHOSPHORYLATION ENVELOPE FRAGMENTS OF LAMINS EARLY TELOPHASE
Breakdown and reformation of nuclear envelope during mitosis
二、核孔复合体 Cell Science The Nuclear Pore Complex S.Bagley,M.W.Goldberg.J.M.Cronshaw,S.A.Rutherford and T.D.Allen
二、核孔复合体
(一)结构模型 “fish-trap”model ·胞质环(cytoplasmic ring) ·核质环(nuclear ring) ·辐(spoke):柱状亚单位;腔内亚单位;环带亚单位 ·中央栓(central plug),中央颗粒(central granule) 纤维 中央栓 胞质环 外核膜 腔内亚单位 核被膜 内核膜 柱状亚单位 核篮 核质环 核纤层
(一)结构模型—— “fish-trap”model • 胞质环(cytoplasmic ring) • 核质环(nuclear ring) • 辐(spoke):柱状亚单位;腔内亚单位;环带亚单位 • 中央栓(central plug),中央颗粒 (central granule)