Histone H2A(acetyl K9) Conjuga

Analysis of Nuclear Receptor Acetylation

Acetylation is an essential post-translational modification in which an acetyl group is covalently conjugated to a protein substrate. Histone acetylation was first proposed nearly half a century ago by Dr. Vincent Allfrey. Subsequent studies

表观遗传学修饰

、双甲基化或三甲基化有关。组蛋白修饰最基本的作用是调控基因表达。例如组蛋白甲基化多导致基因沉默，去甲基化则相反；乙酰化一般是转录激活，去乙酰化则相反。当然，也可在此基础上产生复杂的生物学效应。例如组蛋白去乙酰化酶 HDAC 可影响免疫系统；H3K4me3、H3K9me2 能够调控记忆的形成, 而且 H3K 甲基化与 X 染色体失活、基因组印记和异染色质形成有关；H3 乙酰化通过多种机制调控以来 ATP 的染色质重塑 [12]，并参与炎症反应；H2A、H2B 泛素化则与 DNA 损害反应有关；而 H3

Use of In Vivo Biotinylation for Chromatin Immunoprecipitation

ratio). (A ) Silver stain of biotinylated protein expressed in HEK 293 cells, separated by SDS‐PAGE and washed with either standard buffer or 2% SDS. (B ) Interaction of histone H2A.Z with the total genome of NIH3T3 cells. NIH3T3 cells were transiently