Results 61 to 70 of about 42,496 (156)

Polymerase θ is a robust terminal transferase that oscillates between three different mechanisms during end-joining

eLife, 2016
DNA polymerase θ (Polθ) promotes insertion mutations during alternative end-joining (alt-EJ) by an unknown mechanism. Here, we discover that mammalian Polθ transfers nucleotides to the 3’ terminus of DNA during alt-EJ in vitro and in vivo by oscillating ...
Tatiana Kent, Pedro A Mateos-Gomez, Agnel Sfeir, Richard T Pomerantz   +3 more
doaj   +1 more source

Microhomology-mediated end joining is activated in irradiated human cells due to phosphorylation-dependent formation of the XRCC1 repair complex. [PDF]

Nucleic Acids Res, 2017
Microhomology-mediated end joining (MMEJ), an error-prone pathway for DNA double-strand break (DSB) repair, is implicated in genomic rearrangement and oncogenic transformation; however, its contribution to repair of radiation-induced DSBs has not been ...
Dutta A, Eckelmann B, Adhikari S, Ahmed KM, Sengupta S, Pandey A, Hegde PM, Tsai MS, Tainer JA, Weinfeld M, Hegde ML, Mitra S.   +11 more
europepmc   +2 more sources

Rapid Screening for CRISPR-Directed Editing of the Drosophila Genome Using white Coconversion

G3: Genes, Genomes, Genetics, 2016
Adoption of a streamlined version of the bacterial clustered regular interspersed short palindromic repeat (CRISPR)/Cas9 defense system has accelerated targeted genome engineering. The Streptococcus pyogenes Cas9 protein, directed by a simplified, CRISPR-
Daniel Tianfang Ge, Cindy Tipping, Michael H. Brodsky, Phillip D. Zamore   +3 more
doaj   +1 more source

Plant organellar DNA polymerases repair double-stranded breaks by microhomology-mediated end-joining. [PDF]

Nucleic Acids Res, 2019
Double-stranded breaks (DSBs) in plant organelles are repaired via genomic rearrangements characterized by microhomologous repeats. These microhomologous signatures predict the existence of an unidentified enzymatic machinery capable of repairing of DSBs via microhomology-mediated end-joining (MMEJ) in plant organelles.
García-Medel PL, Baruch-Torres N, Peralta-Castro A, Trasviña-Arenas CH, Torres-Larios A, Brieba LG.   +5 more
europepmc   +4 more sources

Nuclear pore links Fob1‐dependent rDNA damage relocation to lifespan control

FEBS Open Bio, EarlyView.
Damaged rDNA accumulates at a specific perinuclear interface that couples nucleolar escape with nuclear envelope association. Nuclear pores at this site help inhibit Fob1‐induced rDNA instability. This spatial organization of damage handling supports a functional link between nuclear architecture, rDNA stability, and replicative lifespan in yeast.
Yamato Okada, Mina Iwaki, Kyosuke Hagiri, Rei Izumi, Masahiko Harata, Chihiro Horigome   +5 more
wiley   +1 more source

Alternative end-joining mechanisms: a historical perspective

Frontiers in Genetics, 2013
In the presence of functional DNA repair pathways, DNA double-strand breaks (DSBs) are mainly repaired by non-homologous end-joining (NHEJ) or homologous recombination (HR), two conserved pathways that protect cells from aberrant chromosomal ...
Anabelle eDecottignies
doaj   +1 more source

DNA Replication Errors Drive Genome‐Wide Small Inverted Triplication Dynamics

Advanced Science, EarlyView.
This study provides insight into the dynamic equilibrium mechanism of a novel structural variant, small inverted triplication (SIT), which is generated by misalignment of the 3’ flap generated under DNA replication stress with palindromic sequence. Alternatively, the end sequence may fold back on itself to form an inverted fragment.
Yi Lei, Yu Zhou, Haitao Sun, Hang Yuan, Xinyu Pei, Jessica D. Hess, Yao Yan, Zunsong Hu, Mian Zhou, Zhaohui Gu, Li Zheng, Xiwei Wu, Binghui Shen   +12 more
wiley   +1 more source

CATI: an efficient gene integration method for rodent and primate embryos by MMEJ suppression

Genome Biology, 2023
The efficiency of homology-directed repair (HDR) plays a crucial role in the development of animal models and gene therapy. We demonstrate that microhomology-mediated end-joining (MMEJ) constitutes a substantial proportion of DNA repair during CRISPR ...
Hongyu Chen, Xingchen Liu, Lanxin Li, Qingtong Tan, Shiyan Li, Li Li, Chunyang Li, Jiqiang Fu, Yong Lu, Yan Wang, Yidi Sun, Zhen-Ge Luo, Zongyang Lu, Qiang Sun, Zhen Liu   +14 more
doaj   +1 more source

Modulating mutational outcomes and improving precise gene editing at CRISPR-Cas9-induced breaks by chemical inhibition of end-joining pathways

Cell Reports, 2023
Summary: Gene editing through repair of CRISPR-Cas9-induced chromosomal breaks offers a means to correct a wide range of genetic defects. Directing repair to produce desirable outcomes by modulating DNA repair pathways holds considerable promise to ...
Joost Schimmel, Núria Muñoz-Subirana, Hanneke Kool, Robin van Schendel, Sven van der Vlies, Juliette A. Kamp, Femke de Vrij, Steven A. Kushner, Graeme C.M. Smith, Simon J. Boulton, Marcel Tijsterman   +10 more
doaj   +1 more source

Transposase‐Assisted Donor Tethering Boosts Large‐Fragment HDR in Plants

Advanced Science, EarlyView.
A transposase‐assisted donor tethering strategy is developed to enhance homology‐directed repair in plants. By recruiting donor DNA to double‐strand breaks and synergizing with repair pathway reprogramming and transcription‐coupled donor design, this system markedly improves large‐fragment targeted insertion efficiency, providing a robust platform for ...
Sha Wei, Kai Zhang, Shuke Deng, Jinjie Chen, Xiaomei Huang, Jingfei Guo, Yuqing Wu, Yingjie Guo, Zhen Liang   +8 more
wiley   +1 more source