Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Illkirch, France.
Institut National de la Santé et de la Recherche Médicale (INSERM), U 1258, Illkirch, France.
Eur J Immunol. 2018 Apr;48(4):720-723. doi: 10.1002/eji.201747258. Epub 2018 Feb 14.
The Mediator complex is known to orchestrate transcription. Here we show that B cell conditional deficient mice for the Med1 subunit display robust somatic hypermutation. Nevertheless, the mutation frequency at A residues is decreased and the expected A/T ratio is abolished, implicating Mediator in the second phase of somatic hypermutation.
中介复合物已知可协调转录。在这里,我们表明 B 细胞条件性缺乏 Med1 亚基的小鼠表现出强烈的体细胞超突变。然而,A 残基的突变频率降低,预期的 A/T 比例被废除,这表明中介复合物参与了体细胞超突变的第二阶段。