Histone deacetylases (HDACs) are a group of enzymes closely related to __________. They catalyze acetyl group removal from lysine residues in histones and non-histone proteins, causing transcriptional repression. HDACs are usually components of multiprotein complexes.
举一反三
- 下列哪些描述不是转录激活因子促进转录的机制（ ） A: 转录激活因子可以直接或者间接通过中介子与通用因子相互作用，帮助将通用因子和RNA聚合酶复合体招募到核心启动子 B: 招募组蛋白乙酰转移酶(Histone acetyl transferase), 解开染色质结构 C: 招募染色质重塑复合物 (Chromatin remodeling complexes) D: 招募组蛋白脱乙酰基酶 （Histone deacetylases）
- Which is the following can transfer acetyl group from mitochondria to cytoplasm
- Removal of which following group produces more active deadenylylated glutamine synthetase, and glutamine is formed？ A: acetyl B: phosphoryl C: methyl D: adenylyl
- The so-called “thought group” refers to a group of words closely related in meaning and grammatical structure. This group of words includes some key words and non-key words, in which key words provide key information, whilenon-key words are used to express auxiliary information.
- This group is considered to be the most closely related to ancestral amniotes. A: mammals B: snakes C: lizards D: birds E: turtles