Chromatin yog ib yam khoom nyob rau hauv chromosome uas muaj DNA thiab protein. … Cov cov proteins loj hauv chromatinyog cov histones, uas pab ntim cov DNA hauv daim ntawv cog lus uas haum rau hauv lub cell nucleus. Kev hloov pauv hauv cov qauv chromatin yog txuam nrog DNA replication thiab gene qhia.
Puas yog histones hauv chromatin?
DNA, Histones, thiab Chromatin
Cov lus teb rau lo lus nug no yog qhov tseeb tias qee cov proteins compact chromosomal DNA rauqhov chaw microscopic ntawm eukaryotic nucleus. Cov proteins no hu ua histones, thiab cov txiaj ntsig DNA-protein complex hu ua chromatin.
Puas chromatin tsis muaj histone?
Yog, chromatin muaj non-histone proteins.
Histtones ua li cas chromatin?
Muaj tsib hom histones, uas yog H1, H2A, H2B, H3, thiab H4. Ib tug histone core yog tsim thaum ob H2A thiab H2B ua ke nrog H3 thiab H4 proteins. Kwv yees li ntawm 145 lub hauv paus ntawm DNA tau qhwv ob zaug ntawm cov qauv protein no los tsim cov nucleosome.
Chromatin ua los ntawm dab tsi?
Chromatin yog qhov nyuaj ntawm DNA thiab cov proteins uas tsim cov chromosomes hauv cov nucleus ntawm eukaryotic hlwb. Nuclear DNA tsis tshwm sim hauv cov kab dawb dawb; Nws yog condensed heev thiab qhwv ib ncig ntawm cov proteins nuclear kom haum rau hauv lub nucleus.
