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  • 1
    Publication Date: 2012-08-08
    Description: Homologous recombination (HR) represents a major error-free pathway to eliminate pre-carcinogenic chromosomal lesions. The DNA strand invasion reaction in HR is mediated by a helical filament of the Rad51 recombinase assembled on single-stranded DNA that is derived from the nucleolytic processing of the primary lesion. Recent studies have found that the human and mouse Swi5 and Sfr1 proteins form a complex that influences Rad51-mediated HR in cells. Here, we provide biophysical evidence that the mouse Swi5–Sfr1 complex has a 1:1 stoichiometry. Importantly, the Swi5–Sfr1 complex, but neither Swi5 nor Sfr1 alone, physically interacts with Rad51 and stimulates Rad51-mediated homologous DNA pairing. This stimulatory effect stems from the stabilization of the Rad51–ssDNA presynaptic filament. Moreover, we provide evidence that the RSfp (rodent Sfr1 proline rich) motif in Sfr1 serves as a negative regulatory element. These results thus reveal an evolutionarily conserved function in the Swi5–Sfr1 complex and furnish valuable information as to the regulatory role of the RSfp motif that isspecific to themammalianSfr1 orthologs.
    Print ISSN: 0305-1048
    Electronic ISSN: 1362-4962
    Topics: Biology
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  • 2
    Publication Date: 2018
    Description: 〈span〉〈div〉Abstract〈/div〉The Zijinshan high-sulphidation Cu-Au deposit located in the west Fujian Province is the largest active gold mine in China with total production of gold over 300 tonnes to date. The high-sulphidation ore bodies are characterized by the upper supergene Au and lower hypogene Cu zones bounded roughly by the paleowater table near 600 m elevation. Au-bearing goethite and limonite are the main ore minerals in the supergene zone whereas the hypogene Cu mineralization is dominated by covellite and anilite (or digenite) with minor enargite. The expected porphyry mineralization that coupled with Zijinshan is so far not exposed even to a depth of 1500 m from surface. However, the Luoboling Cu-Mo deposit which occurs only 3 km NE to Zijinshan is identified as a typical porphyry deposit. Current debate centered on whether the Zijinshan high-sulphidation epithermal deposit and the adjacent Luoboling porphyry deposit are genetically linked or discrete hydrothermal systems. Recent deep exploration at Zijinshan revealed an extension trend of Cu ore bodies and quartz-alunite alteration zone toward SE below 0 m elevation. This contradicts previous considered NE trend above 0 m elevation. In this study, fluid inclusion mapping based on rigorous strategy and sample selection was carried out on 20 sample suites scattered over the whole high-sulphidation Cu-Au ore bodies from −450 to 800 m elevation. Aqueous fluid inclusions of unambiguous primary origin in syn-ore miarolitic quartz, coarse-grained alunite crystals and quartz overgrowth zones were measured. Microthermometry results show the average T〈sub〉h〈/sub〉 and salinity of each sample suite ranging from 205 to 304°C and 2.4 to 5.5 wt% NaCl equiv., respectively. Both fluid temperature and salinity exhibit negative correlation with increasing elevation, indicating convective cooling by mixing and circulating of meteoric water has involved. The good consistence of mineralization distribution pattern and fluid evolution trend implies that the southeastward extending ore bodies probably reflect the fluid pathway which is connected to the deeper porphyry mineralization and their magmatic source. Considering the temperature condition (370–400°C) required for brittle-plastic transition which commonly characterizes porphyry deposits, the potential porphyry mineralization coupled to Zijinshan should have occurred at greater depth under higher temperature. Combined with recent exploration progress and the fluid evolution pattern, we therefore proposed that the Luoboling porphyry Cu-Mo deposit and the Zijinshan high-sulphidation Cu-Au deposit are likely discrete hydrothermal systems, and future porphyry deposit exploration at the deep SE segment of Zijinshan is recommended.〈/span〉
    Print ISSN: 1467-7873
    Electronic ISSN: 1467-7873
    Topics: Chemistry and Pharmacology , Geosciences
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  • 3
    Publication Date: 2012-02-01
    Description: Spermiogenesis is a series of poorly understood morphological, physiological and biochemical processes that occur during the transition of immotile spermatids into motile, fertilization-competent spermatozoa. Here, we identified a Serpin (serine protease inhibitor) family protein (As_SRP-1) that is secreted from spermatids during nematode Ascaris suum spermiogenesis (also called sperm activation) and we showed that As_SRP-1 has two major functions. First, As_SRP-1 functions in cis to support major sperm protein (MSP)-based cytoskeletal assembly in the spermatid that releases it, thereby facilitating sperm motility acquisition. Second, As_SRP-1 released from an activated sperm inhibits, in trans, the activation of surrounding spermatids by inhibiting vas deferens-derived As_TRY-5, a trypsin-like serine protease necessary for sperm activation. Because vesicular exocytosis is necessary to create fertilization-competent sperm in many animal species, components released during this process might be more important modulators of the physiology and behavior of surrounding sperm than was previously appreciated.
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
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  • 4
    Publication Date: 1997-01-17
    Description: Transmembrane receptors for hormones, neurotransmitters, light, and odorants mediate their cellular effects by activating heterotrimeric guanine nucleotide-binding proteins (G proteins). Crystal structures have revealed contact surfaces between G protein subunits, but not the surfaces or molecular mechanism through which Galphabetagamma responds to activation by transmembrane receptors. Such a surface was identified from the results of testing 100 mutant alpha subunits of the retinal G protein transducin for their ability to interact with rhodopsin. Sites at which alanine substitutions impaired this interaction mapped to two distinct Galpha surfaces: a betagamma-binding surface and a putative receptor-interacting surface. On the basis of these results a mechanism for receptor-catalyzed exchange of guanosine diphosphate for guanosine triphosphate is proposed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Onrust, R -- Herzmark, P -- Chi, P -- Garcia, P D -- Lichtarge, O -- Kingsley, C -- Bourne, H R -- CA-54427/CA/NCI NIH HHS/ -- GM-27800/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1997 Jan 17;275(5298):381-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cellular and Molecular Pharmacology, University of California, San Francisco, CA 94143-0450, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8994033" target="_blank"〉PubMed〈/a〉
    Keywords: Aluminum Compounds/pharmacology ; Animals ; Binding Sites ; COS Cells ; Fluorides/pharmacology ; Guanosine 5'-O-(3-Thiotriphosphate)/metabolism ; Guanosine Diphosphate/metabolism ; Models, Molecular ; Mutation ; Phenotype ; *Protein Conformation ; Retinaldehyde/pharmacology ; Rhodopsin/*metabolism/pharmacology ; Rod Cell Outer Segment/metabolism ; Transducin/*chemistry/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
    Publication Date: 2010-10-12
    Description: Gastrointestinal stromal tumour (GIST) is the most common human sarcoma and is primarily defined by activating mutations in the KIT or PDGFRA receptor tyrosine kinases. KIT is highly expressed in interstitial cells of Cajal (ICCs)-the presumed cell of origin for GIST-as well as in haematopoietic stem cells, melanocytes, mast cells and germ cells. Yet, families harbouring germline activating KIT mutations and mice with knock-in Kit mutations almost exclusively develop ICC hyperplasia and GIST, suggesting that the cellular context is important for KIT to mediate oncogenesis. Here we show that the ETS family member ETV1 is highly expressed in the subtypes of ICCs sensitive to oncogenic KIT mediated transformation, and is required for their development. In addition, ETV1 is universally highly expressed in GISTs and is required for growth of imatinib-sensitive and resistant GIST cell lines. Transcriptome profiling and global analyses of ETV1-binding sites suggest that ETV1 is a master regulator of an ICC-GIST-specific transcription network mainly through enhancer binding. The ETV1 transcriptional program is further regulated by activated KIT, which prolongs ETV1 protein stability and cooperates with ETV1 to promote tumorigenesis. We propose that GIST arises from ICCs with high levels of endogenous ETV1 expression that, when coupled with an activating KIT mutation, drives an oncogenic ETS transcriptional program. This differs from other ETS-dependent tumours such as prostate cancer, melanoma and Ewing sarcoma where genomic translocation or amplification drives aberrant ETS expression. It also represents a novel mechanism of oncogenic transcription factor activation.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2955195/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2955195/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chi, Ping -- Chen, Yu -- Zhang, Lei -- Guo, Xingyi -- Wongvipat, John -- Shamu, Tambudzai -- Fletcher, Jonathan A -- Dewell, Scott -- Maki, Robert G -- Zheng, Deyou -- Antonescu, Cristina R -- Allis, C David -- Sawyers, Charles L -- 5F32CA130372/CA/NCI NIH HHS/ -- CA148260/CA/NCI NIH HHS/ -- CA47179/CA/NCI NIH HHS/ -- F32 CA130372/CA/NCI NIH HHS/ -- F32 CA130372-02/CA/NCI NIH HHS/ -- GM40922/GM/NIGMS NIH HHS/ -- K08 CA140946/CA/NCI NIH HHS/ -- K08 CA140946-02/CA/NCI NIH HHS/ -- K08CA140946/CA/NCI NIH HHS/ -- P01 CA047179/CA/NCI NIH HHS/ -- P01 CA047179-169002/CA/NCI NIH HHS/ -- P01CA47179/CA/NCI NIH HHS/ -- R21 MH087840/MH/NIMH NIH HHS/ -- R21 MH087840-01/MH/NIMH NIH HHS/ -- R21MH087840/MH/NIMH NIH HHS/ -- RC2 CA148260-02/CA/NCI NIH HHS/ -- England -- Nature. 2010 Oct 14;467(7317):849-53. doi: 10.1038/nature09409. Epub 2010 Oct 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, New York 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20927104" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Benzamides ; Binding Sites ; Biomarkers, Tumor/genetics/metabolism ; Cell Line, Tumor ; *Cell Lineage ; Cell Survival/drug effects ; *Cell Transformation, Neoplastic ; DNA-Binding Proteins/antagonists & inhibitors/genetics/*metabolism ; Disease Progression ; Enhancer Elements, Genetic/genetics ; Gastrointestinal Stromal Tumors/*metabolism/*pathology ; Gene Expression Profiling ; Gene Expression Regulation, Neoplastic/genetics ; Humans ; Imatinib Mesylate ; Interstitial Cells of Cajal/metabolism/pathology ; Mice ; Mutant Proteins/genetics/metabolism ; Mutation ; NIH 3T3 Cells ; Oncogenes/genetics/*physiology ; Piperazines/pharmacology ; Protein Stability ; Proto-Oncogene Proteins c-kit/genetics/*metabolism ; Pyrimidines/pharmacology ; Signal Transduction ; Transcription Factors/antagonists & inhibitors/genetics/*metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 6
    Publication Date: 2010-09-03
    Description: If not properly processed and repaired, DNA double-strand breaks (DSBs) can give rise to deleterious chromosome rearrangements, which could ultimately lead to the tumour phenotype. DSB ends are resected in a 5' to 3' fashion in cells, to yield single-stranded DNA (ssDNA) for the recruitment of factors critical for DNA damage checkpoint activation and repair by homologous recombination. The resection process involves redundant pathways consisting of nucleases, DNA helicases and associated proteins. Being guided by recent genetic studies, we have reconstituted the first eukaryotic ATP-dependent DNA end-resection machinery comprising the Saccharomyces cerevisiae Mre11-Rad50-Xrs2 (MRX) complex, the Sgs1-Top3-Rmi1 complex, Dna2 protein and the heterotrimeric ssDNA-binding protein RPA. Here we show that DNA strand separation during end resection is mediated by the Sgs1 helicase function, in a manner that is enhanced by Top3-Rmi1 and MRX. In congruence with genetic observations, although the Dna2 nuclease activity is critical for resection, the Mre11 nuclease activity is dispensable. By examining the top3 Y356F allele and its encoded protein, we provide evidence that the topoisomerase activity of Top3, although critical for the suppression of crossover recombination, is not needed for resection either in cells or in the reconstituted system. Our results also unveil a multifaceted role of RPA, in the sequestration of ssDNA generated by DNA unwinding, enhancement of 5' strand incision, and protection of the 3' strand. Our reconstituted system should serve as a useful model for delineating the mechanistic intricacy of the DNA break resection process in eukaryotes.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2955862/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2955862/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Niu, Hengyao -- Chung, Woo-Hyun -- Zhu, Zhu -- Kwon, Youngho -- Zhao, Weixing -- Chi, Peter -- Prakash, Rohit -- Seong, Changhyun -- Liu, Dongqing -- Lu, Lucy -- Ira, Grzegorz -- Sung, Patrick -- P01 CA092584/CA/NCI NIH HHS/ -- P01 CA092584-100007/CA/NCI NIH HHS/ -- R01 CA146940/CA/NCI NIH HHS/ -- R01 ES007061/ES/NIEHS NIH HHS/ -- R01 ES007061-18/ES/NIEHS NIH HHS/ -- R01 ES015252/ES/NIEHS NIH HHS/ -- R01 ES015252-04/ES/NIEHS NIH HHS/ -- R01 ES015632/ES/NIEHS NIH HHS/ -- R01 ES015632-04/ES/NIEHS NIH HHS/ -- R01 GM057814/GM/NIGMS NIH HHS/ -- R01 GM057814-11/GM/NIGMS NIH HHS/ -- R01 GM080600/GM/NIGMS NIH HHS/ -- R01 GM080600-03S1/GM/NIGMS NIH HHS/ -- R01 GM080600-04/GM/NIGMS NIH HHS/ -- England -- Nature. 2010 Sep 2;467(7311):108-11. doi: 10.1038/nature09318.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biophysics and Biochemistry, Yale University School of Medicine, New Haven, Connecticut 06520, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20811460" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/*metabolism ; *DNA Breaks, Double-Stranded ; DNA Helicases/metabolism ; *DNA Repair ; DNA, Single-Stranded/metabolism ; DNA-Binding Proteins/metabolism ; RecQ Helicases/metabolism ; Replication Protein A/metabolism ; Saccharomyces cerevisiae/genetics/*metabolism ; Saccharomyces cerevisiae Proteins/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 7
    Publication Date: 2018
    Description: 〈p〉A key function of reversible protein phosphorylation is to regulate protein–protein interactions, many of which involve short linear motifs (3–12 amino acids). Motif-based interactions are difficult to capture because of their often low-to-moderate affinities. Here, we describe phosphomimetic proteomic peptide-phage display, a powerful method for simultaneously finding motif-based interaction and pinpointing phosphorylation switches. We computationally designed an oligonucleotide library encoding human C-terminal peptides containing known or predicted Ser/Thr phosphosites and phosphomimetic variants thereof. We incorporated these oligonucleotides into a phage library and screened the PDZ (PSD-95/Dlg/ZO-1) domains of Scribble and DLG1 for interactions potentially enabled or disabled by ligand phosphorylation. We identified known and novel binders and characterized selected interactions through microscale thermophoresis, isothermal titration calorimetry, and NMR. We uncover site-specific phospho-regulation of PDZ domain interactions, provide a structural framework for how PDZ domains accomplish phosphopeptide binding, and discuss ligand phosphorylation as a switching mechanism of PDZ domain interactions. The approach is readily scalable and can be used to explore the potential phospho-regulation of motif-based interactions on a large scale.〈/p〉
    Electronic ISSN: 1744-4292
    Topics: Biology
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  • 8
    Publication Date: 2015-10-08
    Description: Activation of oncogenes by mechanisms other than genetic aberrations such as mutations, translocations, or amplifications is largely undefined. Here we report a novel isoform of the anaplastic lymphoma kinase (ALK) that is expressed in approximately 11% of melanomas and sporadically in other human cancer types, but not in normal tissues. The novel ALK transcript initiates from a de novo alternative transcription initiation (ATI) site in ALK intron 19, and was termed ALK(ATI). In ALK(ATI)-expressing tumours, the ATI site is enriched for H3K4me3 and RNA polymerase II, chromatin marks characteristic of active transcription initiation sites. ALK(ATI) is expressed from both ALK alleles, and no recurrent genetic aberrations are found at the ALK locus, indicating that the transcriptional activation is independent of genetic aberrations at the ALK locus. The ALK(ATI) transcript encodes three proteins with molecular weights of 61.1, 60.8 and 58.7 kilodaltons, consisting primarily of the intracellular tyrosine kinase domain. ALK(ATI) stimulates multiple oncogenic signalling pathways, drives growth-factor-independent cell proliferation in vitro, and promotes tumorigenesis in vivo in mouse models. ALK inhibitors can suppress the kinase activity of ALK(ATI), suggesting that patients with ALK(ATI)-expressing tumours may benefit from ALK inhibitors. Our findings suggest a novel mechanism of oncogene activation in cancer through de novo alternative transcription initiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wiesner, Thomas -- Lee, William -- Obenauf, Anna C -- Ran, Leili -- Murali, Rajmohan -- Zhang, Qi Fan -- Wong, Elissa W P -- Hu, Wenhuo -- Scott, Sasinya N -- Shah, Ronak H -- Landa, Inigo -- Button, Julia -- Lailler, Nathalie -- Sboner, Andrea -- Gao, Dong -- Murphy, Devan A -- Cao, Zhen -- Shukla, Shipra -- Hollmann, Travis J -- Wang, Lu -- Borsu, Laetitia -- Merghoub, Taha -- Schwartz, Gary K -- Postow, Michael A -- Ariyan, Charlotte E -- Fagin, James A -- Zheng, Deyou -- Ladanyi, Marc -- Busam, Klaus J -- Berger, Michael F -- Chen, Yu -- Chi, Ping -- DP2 CA174499/CA/NCI NIH HHS/ -- DP2CA174499/CA/NCI NIH HHS/ -- K08 CA151660/CA/NCI NIH HHS/ -- K08CA140946/CA/NCI NIH HHS/ -- K08CA151660/CA/NCI NIH HHS/ -- P01 CA129243/CA/NCI NIH HHS/ -- P01CA12943/CA/NCI NIH HHS/ -- P30 CA008748/CA/NCI NIH HHS/ -- P50 CA172012/CA/NCI NIH HHS/ -- P50CA172012/CA/NCI NIH HHS/ -- England -- Nature. 2015 Oct 15;526(7573):453-7. doi: 10.1038/nature15258. Epub 2015 Oct 7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York 10065, USA. ; Department of Dermatology, Medical University of Graz, 8010 Graz, Austria. ; Computational Biology Program, Memorial Sloan Kettering Cancer Center, New York 10065, USA. ; Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York 10065, USA. ; Cancer Biology and Genetics Program, Memorial Sloan Kettering Cancer Center, New York 10065, USA. ; Department of Pathology, Memorial Sloan Kettering Cancer Center, New York 10065, USA. ; Marie-Josee and Henry R. Kravis Center for Molecular Oncology, Memorial Sloan Kettering Cancer Center, New York 10065, USA. ; Department of Pathology and Laboratory Medicine, Weill Cornell Medical College/New York Presbyterian Hospital, New York 10065, USA. ; Institute for Computational Biomedicine, Weill Cornell Medical College/New York Presbyterian Hospital, New York 10065, USA. ; Institute for Precision Medicine, Weill Cornell Medical College/New York Presbyterian Hospital, New York, USA. ; Immunology Program, Memorial Sloan Kettering Cancer Center 10065, New York, USA. ; Herbert Irving Comprehensive Cancer Center, Columbia University Cancer Center, New York 10032, USA. ; Department of Medicine, Memorial Sloan Kettering Cancer Center, New York 10065, USA. ; Department of Medicine, Weill Cornell Medical College, New York 10065, USA. ; Department of Surgery, Memorial Sloan Kettering Cancer Center, New York 10065, USA. ; Department of Neurology, Albert Einstein College of Medicine, New York 10461, USA. ; Department of Genetics, Albert Einstein College of Medicine, New York 10461, USA. ; Department of Neuroscience, Albert Einstein College of Medicine, New York 10461, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26444240" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 9
    Publication Date: 2013-09-13
    Description: During DNA repair by homologous recombination (HR), DNA synthesis copies information from a template DNA molecule. Multiple DNA polymerases have been implicated in repair-specific DNA synthesis, but it has remained unclear whether a DNA helicase is involved in this reaction. A good candidate DNA helicase is Pif1, an evolutionarily conserved helicase in Saccharomyces cerevisiae important for break-induced replication (BIR) as well as HR-dependent telomere maintenance in the absence of telomerase found in 10-15% of all cancers. Pif1 has a role in DNA synthesis across hard-to-replicate sites and in lagging-strand synthesis with polymerase delta (Poldelta). Here we provide evidence that Pif1 stimulates DNA synthesis during BIR and crossover recombination. The initial steps of BIR occur normally in Pif1-deficient cells, but Poldelta recruitment and DNA synthesis are decreased, resulting in premature resolution of DNA intermediates into half-crossovers. Purified Pif1 protein strongly stimulates Poldelta-mediated DNA synthesis from a D-loop made by the Rad51 recombinase. Notably, Pif1 liberates the newly synthesized strand to prevent the accumulation of topological constraint and to facilitate extensive DNA synthesis via the establishment of a migrating D-loop structure. Our results uncover a novel function of Pif1 and provide insights into the mechanism of HR.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3915060/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3915060/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilson, Marenda A -- Kwon, YoungHo -- Xu, Yuanyuan -- Chung, Woo-Hyun -- Chi, Peter -- Niu, Hengyao -- Mayle, Ryan -- Chen, Xuefeng -- Malkova, Anna -- Sung, Patrick -- Ira, Grzegorz -- ES007061/ES/NIEHS NIH HHS/ -- ES015632/ES/NIEHS NIH HHS/ -- GM057814/GM/NIGMS NIH HHS/ -- GM080600/GM/NIGMS NIH HHS/ -- GM084242/GM/NIGMS NIH HHS/ -- R01 ES007061/ES/NIEHS NIH HHS/ -- R01 ES015632/ES/NIEHS NIH HHS/ -- R01 GM057814/GM/NIGMS NIH HHS/ -- R01 GM080600/GM/NIGMS NIH HHS/ -- R01 GM084242/GM/NIGMS NIH HHS/ -- R03 ES016434/ES/NIEHS NIH HHS/ -- T32 GM008307/GM/NIGMS NIH HHS/ -- T32GM07526-34/GM/NIGMS NIH HHS/ -- England -- Nature. 2013 Oct 17;502(7471):393-6. doi: 10.1038/nature12585. Epub 2013 Sep 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Baylor College of Medicine, Department of Molecular & Human Genetics, One Baylor Plaza, Houston, Texas 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24025768" target="_blank"〉PubMed〈/a〉
    Keywords: *Crossing Over, Genetic ; DNA Helicases/deficiency/genetics/*metabolism ; DNA Polymerase III/*metabolism ; DNA Repair ; *DNA Replication ; DNA, Fungal/*biosynthesis/chemistry/metabolism ; Nucleic Acid Conformation ; Rad51 Recombinase/metabolism ; Saccharomyces cerevisiae/*enzymology/*genetics/metabolism ; Saccharomyces cerevisiae Proteins/genetics/*metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 10
    Publication Date: 2016-05-14
    Description: Several types of pediatric cancers reportedly contain high-frequency missense mutations in histone H3, yet the underlying oncogenic mechanism remains poorly characterized. Here we report that the H3 lysine 36-to-methionine (H3K36M) mutation impairs the differentiation of mesenchymal progenitor cells and generates undifferentiated sarcoma in vivo. H3K36M mutant nucleosomes inhibit the enzymatic activities of several H3K36 methyltransferases. Depleting H3K36 methyltransferases, or expressing an H3K36I mutant that similarly inhibits H3K36 methylation, is sufficient to phenocopy the H3K36M mutation. After the loss of H3K36 methylation, a genome-wide gain in H3K27 methylation leads to a redistribution of polycomb repressive complex 1 and de-repression of its target genes known to block mesenchymal differentiation. Our findings are mirrored in human undifferentiated sarcomas in which novel K36M/I mutations in H3.1 are identified.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lu, Chao -- Jain, Siddhant U -- Hoelper, Dominik -- Bechet, Denise -- Molden, Rosalynn C -- Ran, Leili -- Murphy, Devan -- Venneti, Sriram -- Hameed, Meera -- Pawel, Bruce R -- Wunder, Jay S -- Dickson, Brendan C -- Lundgren, Stefan M -- Jani, Krupa S -- De Jay, Nicolas -- Papillon-Cavanagh, Simon -- Andrulis, Irene L -- Sawyer, Sarah L -- Grynspan, David -- Turcotte, Robert E -- Nadaf, Javad -- Fahiminiyah, Somayyeh -- Muir, Tom W -- Majewski, Jacek -- Thompson, Craig B -- Chi, Ping -- Garcia, Benjamin A -- Allis, C David -- Jabado, Nada -- Lewis, Peter W -- DP2CA174499/CA/NCI NIH HHS/ -- DP2OD007447/OD/NIH HHS/ -- K08CA151660/CA/NCI NIH HHS/ -- K08CA181475/CA/NCI NIH HHS/ -- P01CA196539/CA/NCI NIH HHS/ -- P30CA008748/CA/NCI NIH HHS/ -- R01GM110174/GM/NIGMS NIH HHS/ -- Canadian Institutes of Health Research/Canada -- New York, N.Y. -- Science. 2016 May 13;352(6287):844-9. doi: 10.1126/science.aac7272.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Chromatin Biology and Epigenetics, The Rockefeller University, New York, NY 10065, USA. ; Epigenetics Theme, Wisconsin Institute for Discovery, University of Wisconsin, Madison, WI 53715, USA. Department of Biomolecular Chemistry, School of Medicine and Public Health, University of Wisconsin, Madison, WI 53715, USA. ; Department of Human Genetics, McGill University, Montreal, Quebec H3Z 2Z3, Canada. ; Epigenetics Program and Department of Biochemistry and Biophysics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA. Department of Chemistry, Princeton University, Princeton, NJ 08544, USA. ; Human Oncology and Pathogenesis Program and Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA. ; Department of Pathology, University of Michigan Medical School, Ann Arbor, MI 48109, USA. ; Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA. ; Department of Pathology and Laboratory Medicine, The Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA. ; University Musculoskeletal Oncology Unit, Mount Sinai Hospital, Toronto, Ontario M5G 1X5, Canada. Department of Surgical Oncology and Division of Orthopedic Surgery, Princess Margaret Hospital, University of Toronto, Toronto, Ontario M5T 2M9, Canada. ; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada. Department of Pathology and Laboratory Medicine, Mount Sinai Hospital, Toronto, Ontario M5G 1X5, Canada. ; Department of Chemistry, Princeton University, Princeton, NJ 08544, USA. ; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada. Department of Pathology and Laboratory Medicine, Mount Sinai Hospital, Toronto, Ontario M5G 1X5, Canada. Department of Molecular Genetics, University of Toronto, Toronto, Ontario M5S 1A8, Canada. The Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario M5G 1X5, Canada. ; Department of Medical Genetics and Children's Hospital of Eastern Ontario Research Institute, University of Ottawa, Ottawa, Ontario K1H 8L1, Canada. ; Division of Orthopaedic Surgery, Montreal General Hospital, McGill University Health Centre, Montreal, Quebec H3G 1A4, Canada. ; Cancer Biology and Genetics Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA. ; Human Oncology and Pathogenesis Program and Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA. Department of Medicine, Weill Cornell Medical College, New York, NY 10065, USA. ; Epigenetics Program and Department of Biochemistry and Biophysics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA. ; Laboratory of Chromatin Biology and Epigenetics, The Rockefeller University, New York, NY 10065, USA. plewis@discovery.wisc.edu nada.jabado@mcgill.ca alliscd@rockefeller.edu. ; Department of Human Genetics, McGill University, Montreal, Quebec H3Z 2Z3, Canada. Department of Pediatrics, McGill University, Montreal, Quebec H3Z 2Z3, Canada. plewis@discovery.wisc.edu nada.jabado@mcgill.ca alliscd@rockefeller.edu. ; Epigenetics Theme, Wisconsin Institute for Discovery, University of Wisconsin, Madison, WI 53715, USA. Department of Biomolecular Chemistry, School of Medicine and Public Health, University of Wisconsin, Madison, WI 53715, USA. plewis@discovery.wisc.edu nada.jabado@mcgill.ca alliscd@rockefeller.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27174990" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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