Histone H2B (Acetyl Lys21) 多克隆

组蛋白 Histone Protein

组蛋白是和染色体相联的最主要的蛋白质。它的作用是和染色体中的 DNA 的负电荷结合。组蛋白是比较小的碱性蛋白；在细胞正常 pH 值时，组蛋白带有正电荷，这样它们就可以和 DNA 结合，这个正电荷主要存在于碱性氨基酸 Lys 和 Arg 的 -NH3 上。其实，组蛋白约含 25% 的 Arg 和 Lys 。比其他蛋白的 Arg ， Lys 的含量都多。和真核 DNA 结合的有 5 种类型的组蛋白： H1 ， H2A ， H2B ， H3

Histone Acetylation and Deacetylation

transcription (1 ,2 ). DNA is packaged into chromatin, a highly organized and dynamic protein-DNA complex. The fundamental subunit of chromatin, the nucleosome, is composed of an octomer of four core histones, an H3/H4 tetramer and two H2A/H2B dimers, surrounded

Histone Acetylation/Deacetylation As a Regulator of Cell Cycle Gene Expression

-diphosphate (ADP)-ribosylation, methylation, ubiquitination, and acetylation (1 ,2 ). Histone acetylation involves the transfer of an acetyl group from acetyl-coenzyme A (CoA) to the ε-amino group of lysine side chains within the substrate by histone acetyl