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qihaishan至尊木蟲 (小有名氣)
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[求助]
請(qǐng)問下大家transcription factor 與transcription regulator的區(qū)別與聯(lián)系?謝謝!
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分子生化實(shí)驗(yàn)經(jīng)驗(yàn)積累 | 【分子生物】EPI帖 |
榮譽(yù)版主 (著名寫手)
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專家經(jīng)驗(yàn): +24 |
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transcription factor其有轉(zhuǎn)錄活性,結(jié)合在特定DNA順式作用元件上與RNA聚合酶Ⅱ形成轉(zhuǎn)錄起始復(fù)合物,比如轉(zhuǎn)錄因子p53,酵母雙雜交系統(tǒng)中用到的轉(zhuǎn)錄因子GAL4,轉(zhuǎn)錄因子一般有DNA結(jié)合結(jié)構(gòu)域,二聚化結(jié)構(gòu)域以及轉(zhuǎn)錄激活域。轉(zhuǎn)錄因子有普遍轉(zhuǎn)錄因子和組織細(xì)胞特異性轉(zhuǎn)錄因子。 轉(zhuǎn)錄因子有這么幾個(gè)大類: 1. Basic Helix-Loop-Helix (bHLH) Transcription Factors 2. Immunoglobulin-Like Domain Transcription Factors 3. Basic Leucine Zipper (bZIP) Transcription Factors 4. Interferon-Regulatory Factor Transcription Factors 5. ETS Family Transcription Factors 6. Kruppel-Like Transcription Factors 7. Forkhead Domain Transcription Factors 8. Paired Box Transcription Factors 9. GATA Transcription Factors 10. Smad Transcription Factors 11. High Mobility Group (HMG) Transcription Factors 12. Homeodomain (Hox) Transcription Factors 13. Other Transcription Factors包括: AP-2 beta LMO2 AP-2 gamma LMO4 AP-2 epsilon LPP Autoimmune Regulator/AIRE MEF2C C1D PREB DACH2 RFX6 DIDO1 SENP1 E2F-1 SENP2 E2F-2 Teneurin-1 E2F-4 Teneurin-2 HNF-4 alpha/NR2A1 Teneurin-4 HNF-4 gamma/NR2A2 TFCP2L1 transcription regulator 準(zhǔn)確的說應(yīng)該是transcription factors regulators這類因子單獨(dú)存在時(shí)不具有轉(zhuǎn)錄活性,但可以調(diào)節(jié)轉(zhuǎn)錄因子的活性,比如beta-Catenin和TCF4相互作用激活轉(zhuǎn)錄,p300等組蛋白去乙;鸵阴;,DNMT等DNA甲基化或者去甲基化酶,他們起到調(diào)節(jié)轉(zhuǎn)錄活性的作用 transcription regulator分為下面幾個(gè)大類: 1. Transcription Factor Bifunctional Regulators 2. Transcription Factor Co-Repressors 3. Transcription Factor Co-Activators 4. Transcriptional Chromatin Regulation |

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