Ask about this productRelated genes to: C20orf43 antibody
- Gene:
- RTF2 NIH gene
- Name:
- replication termination factor 2
- Previous symbol:
- C20orf43, RTFDC1
- Synonyms:
- HSPC164, CDAO5
- Chromosome:
- 20q13.31
- Locus Type:
- gene with protein product
- Date approved:
- 2001-06-21
- Date modifiied:
- 2018-01-04
Related products to: C20orf43 antibody
Related articles to: C20orf43 antibody
- The essential kinase ataxia telangiectasia and Rad3-related (ATR) monitors the replicative (S) phase of the cell cycle to ensure faithful propagation of genetic material. While much is known about the mechanisms governing ATR activity at replication forks, how its effector checkpoint kinase 1 (CHK1) is regulated to create a localized hub of CHK1 activity at sites of replication remains poorly understood. Here, we report that replication termination factor 2 (RTF2), an essential replisome-associated protein, is necessary for maintaining CHK1 signaling at replication forks. RTF2 interacts with CHK1 and functions alongside the core replicative helicase complex-interacting protein CLASPIN to tether CHK1 to sites of DNA replication, controlling replication rates and preventing premature mitotic entry. These findings uncover how RTF2 and CLASPIN poise CHK1 at replication forks to facilitate its activation by ATR, creating fork-localized CHK1 activity that fuels unperturbed S-phase progression and promotes genome stability by maintaining the intrinsic S-G checkpoint. - Source: PubMed
Publication date: 2026/08/05
Broton CaylaMiller Catherine L WRuiz Penelope DBlobel Nicolas JYao YibingConti Brooke ASchmid Ernst WWalter Johannes CSmogorzewska Agata - Lipids in fish diets provide energy and play important roles in immunity and metabolism. Atlantic salmon, a species that migrates from freshwater to seawater, requires high energy, especially during smoltification. Juvenile teleosts have low lipid requirements, and a high dietary lipid content is known to have negative effects on their growth and digestion. Therefore, this study evaluated the effect of two commercial rainbow trout feeds (low-lipid, 13.41% and 14.6%) on the growth and immune responses of early parr-stage Atlantic salmon compared to commercial salmon feed (high-lipid, 29.52%). Atlantic salmon parr (weight: 14.56 ± 2.1 g; length: 11.23 ± 0.44 cm) were randomly divided into three groups and fed either one of two commercial rainbow trout feeds (RTF1 and RTF2) or the commercial salmon feed (ASF) for 12 weeks. At the end of the feeding trial, growth, haematology, histology and gene expression analyses were performed. There were no significant differences in weight gain rates or feed efficiency between the groups ( > 0.05). Superoxidate dismutase, glutathione peroxidase, lysozyme and immunoglobulin M activities were not different among the experimental groups ( > 0.05). A histological examination of the liver and intestinal tissues showed no pathological symptoms of inflammatory response or lipid accumulation in any of the groups. In an intestinal transcriptome analysis using RNA-seq, the expression levels of several genes linked to lipids, immune-related proteins, cytokines and chemokines did not differ significantly between the groups ( > 0.05). Commercial rainbow trout feed with low lipid content has no clear negative impact on the development of Atlantic salmon during the early parr stage (14.5 to 39.6 g). This study provides basic information for the development of economical feed for early parr-stage Atlantic salmon. - Source: PubMed
Publication date: 2024/05/27
Lee ByoungyoonLee JunohLim SaeyeonSeong MinjaeYun HanbinHan SijunKim Kang-WoongLee SeunghanJeong Seong-MokPark Mun ChangHong Woo SeokKwon Se RyunPark Youngjin - DNA replication through a challenging genomic landscape is coordinated by the replisome, which must adjust to local conditions to provide appropriate replication speed and respond to lesions that hinder its progression. We have previously shown that proteasome shuttle proteins, DNA Damage Inducible 1 and 2 (DDI1/2), regulate Replication Termination Factor 2 (RTF2) levels at stalled replisomes, allowing fork stabilization and restart. Here, we show that during unperturbed replication, RTF2 regulates replisome localization of RNase H2, a heterotrimeric enzyme that removes RNA from RNA-DNA heteroduplexes. RTF2, like RNase H2, is essential for mammalian development and maintains normal replication speed. However, persistent RTF2 and RNase H2 at stalled replication forks prevent efficient replication restart, which is dependent on PRIM1, the primase component of DNA polymerase α-primase. Our data show a fundamental need for RTF2-dependent regulation of replication-coupled ribonucleotide removal and reveal the existence of PRIM1-mediated direct replication restart in mammalian cells. - Source: PubMed
Publication date: 2024/03/02
Conti Brooke ARuiz Penelope DBroton CaylaBlobel Nicolas JKottemann Molly CSridhar SunandiniLach Francis PWiley Tom FSasi Nanda KCarroll ThomasSmogorzewska Agata - Arrested replication forks, when restarted by homologous recombination, result in error-prone DNA syntheses and non-allelic homologous recombination. Fission yeast is a model fork barrier used to probe mechanisms of recombination-dependent restart. barrier activity is entirely dependent on the DNA binding protein Rtf1 and partially dependent on a second protein, Rtf2. Human RTF2 was recently implicated in fork restart, leading us to examine fission yeast Rtf2's role in more detail. In agreement with previous studies, we observe reduced barrier activity upon deletion. However, we identified Rtf2 to be physically associated with mRNA processing and splicing factors and deletion to cause increased intron retention. One of the most affected introns resided in the transcript. Using an intronless we observed no reduction in RFB activity in the absence of Rtf2. Thus, Rtf2 is essential for correct splicing to allow optimal barrier activity. - Source: PubMed
Publication date: 2023/08/24
Budden Alice MEravci MuratWatson Adam TCampillo-Funollet EduardOliver Antony WNaiman KarelCarr Antony M - Genetic information is duplicated via the highly regulated process of DNA replication. The machinery coordinating this process, the replisome, encounters many challenges, including replication fork-stalling lesions that threaten the accurate and timely transmission of genetic information. Cells have multiple mechanisms to repair or bypass lesions that would otherwise compromise DNA replication. We have previously shown that proteasome shuttle proteins, DNA Damage Inducible 1 and 2 (DDI1/2) function to regulate Replication Termination Factor 2 (RTF2) at the stalled replisome, allowing for replication fork stabilization and restart. Here we show that RTF2 regulates replisome localization of RNase H2, a heterotrimeric enzyme responsible for removing RNA in the context of RNA-DNA heteroduplexes. We show that during unperturbed DNA replication, RTF2, like RNase H2, is required to maintain normal replication fork speeds. However, persistent RTF2 and RNase H2 at stalled replication forks compromises the replication stress response, preventing efficient replication restart. Such restart is dependent on PRIM1, the primase component of DNA polymerase α-primase. Our data show a fundamental need for regulation of replication-coupled ribonucleotide incorporation during normal replication and the replication stress response that is achieved through RTF2. We also provide evidence for PRIM1 function in direct replication restart following replication stress in mammalian cells. - Source: PubMed
Publication date: 2023/03/13
Conti Brooke ARuiz Penelope DBroton CaylaBlobel Nicolas JKottemann Molly CSridhar SunandiniLach Francis PWiley TomSasi Nanda KCarroll ThomasSmogorzewska Agata