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引用次数: 0
摘要
增殖细胞核抗原（PCNA）是真核生物的 DNA 复制钳。此外，DNA负载的PCNA在DNA复制和修复过程中起着分子枢纽的作用。PCNA 形成一个环绕 DNA 的封闭的同源三聚环，PCNA 与 DNA 的结合和解离是由钳夹-负载复合物介导的。PCNA 在完成其功能后必须主动从 DNA 中释放出来。如果不释放，PCNA 在染色质上的异常积累就会干扰 DNA 的新陈代谢。含有复制因子 C 样复合体（RLC）的 ATAD5 是一种 PCNA 卸载钳式装载复合体。ATAD5 缺乏会引起各种 DNA 复制和修复问题，导致基因组不稳定。在此，我们回顾了有关 PCNA 卸载复合物在 DNA 复制/修复途径中的作用机制的最新研究进展。
PCNA cycling dynamics during DNA replication and repair in mammals.
Proliferating cell nuclear antigen (PCNA) is a eukaryotic replicative DNA clamp. Furthermore, DNA-loaded PCNA functions as a molecular hub during DNA replication and repair. PCNA forms a closed homotrimeric ring that encircles the DNA, and association and dissociation of PCNA from DNA are mediated by clamp-loader complexes. PCNA must be actively released from DNA after completion of its function. If it is not released, abnormal accumulation of PCNA on chromatin will interfere with DNA metabolism. ATAD5 containing replication factor C-like complex (RLC) is a PCNA-unloading clamp-loader complex. ATAD5 deficiency causes various DNA replication and repair problems, leading to genome instability. Here, we review recent progress regarding the understanding of the action mechanisms of PCNA unloading complex in DNA replication/repair pathways.
期刊介绍：
Launched in 1985, Trends in Genetics swiftly established itself as a "must-read" for geneticists, offering concise, accessible articles covering a spectrum of topics from developmental biology to evolution. This reputation endures, making TiG a cherished resource in the genetic research community. While evolving with the field, the journal now embraces new areas like genomics, epigenetics, and computational genetics, alongside its continued coverage of traditional subjects such as transcriptional regulation, population genetics, and chromosome biology.
Despite expanding its scope, the core objective of TiG remains steadfast: to furnish researchers and students with high-quality, innovative reviews, commentaries, and discussions, fostering an appreciation for advances in genetic research. Each issue of TiG presents lively and up-to-date Reviews and Opinions, alongside shorter articles like Science & Society and Spotlight pieces. Invited from leading researchers, Reviews objectively chronicle recent developments, Opinions provide a forum for debate and hypothesis, and shorter articles explore the intersection of genetics with science and policy, as well as emerging ideas in the field. All articles undergo rigorous peer-review.
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