PCNA(增殖细胞核抗原)加载在模板引物 3′端周围,被保守的分子伴侣样复合物 RFC(复制因子 C)识别,并且该机制是 ATP 依赖性的。PCNA 环对 DNA 的包围确保了聚合酶对 DNA 的牢固锚定,因此,它作为 DNA 聚合酶的辅助因子发挥作用。该蛋白在 K164 残基处的翻译后修饰是调节 DNA 损伤耐受 (DDT) 途径所必需的,该途径确保从 DNA 损伤处的复制停滞中恢复。
Development (Cambridge, England), 142(23), 4026-4037 (2015-12-03)
Cardiovascular disease is the leading cause of morbidity and mortality in the Western world owing to the limited regenerative capacity of the mammalian cardiovascular system. In lieu of new muscle synthesis, the human heart replaces necrotic tissue with deposition of
Proliferating cell nuclear antigen (PCNA): ringmaster of the genome
Paunesku T, et al.
International Journal of Radiation Biology, 77(10), 1007-1021 (2001)
Assembly of carbon nanomaterials into two-dimensional (2D) coatings and films that harness their unique physiochemical properties may lead to high impact energy capture/storage, sensors, and biomedical applications. For potential biomedical applications, the suitability of current techniques such as chemical vapor
Circumstances that compromise efficient DNA replication, such as disruptions to replication fork progression, cause a state known as DNA replication stress (RS). Whereas normally proliferating cells experience low levels of RS, excessive RS from intrinsic or extrinsic sources can trigger