Video: Dab tsi yog txheej txheem eukaryotic xav kom hloov kho chromatin?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Chromatin Remodeling nyob rau hauv Eukaryotes . Hauv eukaryotes , DNA raug kaw nruj nreem rau qhov nyuaj hu ua chromatin . Ua tsaug rau txheej txheem ntawm chromatin hloov kho , qhov nyuaj no tuaj yeem "qhib" kom cov noob tshwj xeeb tau hais tawm.
Hauv qhov no, yuav kho cov tshuaj chromatin li cas?
Kev hloov kho chromatin yog rearrangement ntawm chromatin los ntawm lub xeev condensed mus rau lub xeev transcriptionally accessible, tso cai rau transcription yam los yog lwm yam DNA binding proteins kom nkag tau mus rau DNA thiab tswj gene qhia.
Tsis tas li ntawd, vim li cas kev hloov kho chromatin tseem ceeb? Chromatin kho dua tshiab yog ib tseem ceeb cov txheej txheem ntawm kev tswj hwm cov noob eukaryotic qhia tawm, uas ua kom nruj nruj rau DNA nkag mus rau ntau yam kev tswj hwm, xws li kev hloov pauv thiab cov khoom ntawm DNA rov ua dua.
Txog qhov no, kev ua haujlwm ntawm chromatin remodeling complex yog dab tsi?
Chromatin remodeling yog qhov hloov pauv hloov pauv ntawm chromatin architecture kom tso cai nkag mus rau cov khoom sib txuas ntawm DNA mus rau kev tswj hwm cov tshuab luam ntawv. cov proteins , thiab yog li tswj kev qhia noob.
Yuav ua li cas chromatin kho qhov nyuaj ua haujlwm quizlet?
A. Lawv siv lub zog los ntawm ATP hydrolysis rau hloov nucleosomes thiab ua qee thaj tsam ntawm DNA nkag tau yooj yim dua rau lwm cov protein. Lawv ntxiv methyl pawg rau cov tails ntawm histones nyob rau hauv kev txiav txim rau nyiam lwm cov protein.
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