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三、中间纤维 PowerPoint PPT Presentation


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三、中间纤维 中间纤维( intermediate filaments , IF )直径 10nm 左右,介于粗肌丝和细肌丝(或微管与微丝)之间。与微管不同的是中间纤维是最稳定的细胞骨架成分,它主要起支撑作用。中间纤维在细胞中围绕着细胞核分布,成束成网,并扩展到细胞质膜,与质膜相连结。 (一)成分

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三、中间纤维

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intermediate filamentsIF10nm

IF5keratin filamentdesmin filamentneuroglial filamentvimentin filament(neurofilament )lamin


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2310NC12ABHVE


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intermediate filament associated proteinIFAP15flanggrinPlectinAnkyrin


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()

1

3-30nm

2

DNA Topo II,(D, E, F, C4)DNA-loopNuc2+ATDNA ARBPMAR H1 HMG 1,2AT A,BT


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DNA

DNA

B23


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4

ATDNAMARSAR

ATDNAMAR

5

DNAMARDNA

RNARNA


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1DNA

230SCI

SCII

3

130-100nm10nm

2A,B,CAC

3

DNA


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