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  • Crystallography, X-Ray  (13)
  • Gene Expression Profiling  (12)
  • Nature Publishing Group (NPG)  (25)
  • Springer
  • American Geophysical Union (AGU)
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  • 1
    Publication Date: 2008-01-04
    Description: Typical 2-Cys peroxiredoxins (Prxs) have an important role in regulating hydrogen peroxide-mediated cell signalling. In this process, Prxs can become inactivated through the hyperoxidation of an active site Cys residue to Cys sulphinic acid. The unique repair of this moiety by sulphiredoxin (Srx) restores peroxidase activity and terminates the signal. The hyperoxidized form of Prx exists as a stable decameric structure with each active site buried. Therefore, it is unclear how Srx can access the sulphinic acid moiety. Here we present the 2.6 A crystal structure of the human Srx-PrxI complex. This complex reveals the complete unfolding of the carboxy terminus of Prx, and its unexpected packing onto the backside of Srx away from the Srx active site. Binding studies and activity analyses of site-directed mutants at this interface show that the interaction is required for repair to occur. Moreover, rearrangements in the Prx active site lead to a juxtaposition of the Prx Gly-Gly-Leu-Gly and Srx ATP-binding motifs, providing a structural basis for the first step of the catalytic mechanism. The results also suggest that the observed interactions may represent a common mode for other proteins to bind to Prxs.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2646140/" 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/PMC2646140/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jonsson, Thomas J -- Johnson, Lynnette C -- Lowther, W Todd -- R01 GM072866/GM/NIGMS NIH HHS/ -- R01 GM072866-03/GM/NIGMS NIH HHS/ -- England -- Nature. 2008 Jan 3;451(7174):98-101. doi: 10.1038/nature06415.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Structural Biology and Department of Biochemistry, Wake Forest University School of Medicine, Medical Center Boulevard, Winston-Salem, North Carolina 27157, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18172504" target="_blank"〉PubMed〈/a〉
    Keywords: Binding Sites/genetics ; Catalysis ; Crystallography, X-Ray ; Humans ; Models, Molecular ; Multiprotein Complexes/chemistry/genetics/metabolism ; Mutagenesis, Site-Directed ; Oxidation-Reduction ; Oxidoreductases/*chemistry/genetics/*metabolism ; Oxidoreductases Acting on Sulfur Group Donors ; Peroxiredoxins/*chemistry/genetics/*metabolism ; Protein Structure, Quaternary ; Structure-Activity Relationship
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  • 2
    Publication Date: 2008-11-07
    Description: Acute myeloid leukaemia is a highly malignant haematopoietic tumour that affects about 13,000 adults in the United States each year. The treatment of this disease has changed little in the past two decades, because most of the genetic events that initiate the disease remain undiscovered. Whole-genome sequencing is now possible at a reasonable cost and timeframe to use this approach for the unbiased discovery of tumour-specific somatic mutations that alter the protein-coding genes. Here we present the results obtained from sequencing a typical acute myeloid leukaemia genome, and its matched normal counterpart obtained from the same patient's skin. We discovered ten genes with acquired mutations; two were previously described mutations that are thought to contribute to tumour progression, and eight were new mutations present in virtually all tumour cells at presentation and relapse, the function of which is not yet known. Our study establishes whole-genome sequencing as an unbiased method for discovering cancer-initiating mutations in previously unidentified genes that may respond to targeted therapies.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2603574/" 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/PMC2603574/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ley, Timothy J -- Mardis, Elaine R -- Ding, Li -- Fulton, Bob -- McLellan, Michael D -- Chen, Ken -- Dooling, David -- Dunford-Shore, Brian H -- McGrath, Sean -- Hickenbotham, Matthew -- Cook, Lisa -- Abbott, Rachel -- Larson, David E -- Koboldt, Dan C -- Pohl, Craig -- Smith, Scott -- Hawkins, Amy -- Abbott, Scott -- Locke, Devin -- Hillier, Ladeana W -- Miner, Tracie -- Fulton, Lucinda -- Magrini, Vincent -- Wylie, Todd -- Glasscock, Jarret -- Conyers, Joshua -- Sander, Nathan -- Shi, Xiaoqi -- Osborne, John R -- Minx, Patrick -- Gordon, David -- Chinwalla, Asif -- Zhao, Yu -- Ries, Rhonda E -- Payton, Jacqueline E -- Westervelt, Peter -- Tomasson, Michael H -- Watson, Mark -- Baty, Jack -- Ivanovich, Jennifer -- Heath, Sharon -- Shannon, William D -- Nagarajan, Rakesh -- Walter, Matthew J -- Link, Daniel C -- Graubert, Timothy A -- DiPersio, John F -- Wilson, Richard K -- U54 HG002042/HG/NHGRI NIH HHS/ -- U54 HG002042-05/HG/NHGRI NIH HHS/ -- England -- Nature. 2008 Nov 6;456(7218):66-72. doi: 10.1038/nature07485.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Washington University School of Medicine, St. Louis, Missouri 63108, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18987736" target="_blank"〉PubMed〈/a〉
    Keywords: Case-Control Studies ; Disease Progression ; Gene Expression Profiling ; Gene Expression Regulation, Neoplastic/*genetics ; Genome, Human/*genetics ; Genomics ; Humans ; Leukemia, Myeloid, Acute/*genetics ; Mutagenesis, Insertional ; Mutation ; Polymorphism, Single Nucleotide ; Recurrence ; Sequence Analysis, DNA ; Sequence Deletion ; Skin/metabolism
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  • 3
    Publication Date: 2015-06-02
    Description: Understanding the diversity of human tissues is fundamental to disease and requires linking genetic information, which is identical in most of an individual's cells, with epigenetic mechanisms that could have tissue-specific roles. Surveys of DNA methylation in human tissues have established a complex landscape including both tissue-specific and invariant methylation patterns. Here we report high coverage methylomes that catalogue cytosine methylation in all contexts for the major human organ systems, integrated with matched transcriptomes and genomic sequence. By combining these diverse data types with each individuals' phased genome, we identified widespread tissue-specific differential CG methylation (mCG), partially methylated domains, allele-specific methylation and transcription, and the unexpected presence of non-CG methylation (mCH) in almost all human tissues. mCH correlated with tissue-specific functions, and using this mark, we made novel predictions of genes that escape X-chromosome inactivation in specific tissues. Overall, DNA methylation in several genomic contexts varies substantially among human tissues.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4499021/" 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/PMC4499021/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schultz, Matthew D -- He, Yupeng -- Whitaker, John W -- Hariharan, Manoj -- Mukamel, Eran A -- Leung, Danny -- Rajagopal, Nisha -- Nery, Joseph R -- Urich, Mark A -- Chen, Huaming -- Lin, Shin -- Lin, Yiing -- Jung, Inkyung -- Schmitt, Anthony D -- Selvaraj, Siddarth -- Ren, Bing -- Sejnowski, Terrence J -- Wang, Wei -- Ecker, Joseph R -- F32 HL110473/HL/NHLBI NIH HHS/ -- F32HL110473/HL/NHLBI NIH HHS/ -- K99 HL119617/HL/NHLBI NIH HHS/ -- K99 NS080911/NS/NINDS NIH HHS/ -- K99HL119617/HL/NHLBI NIH HHS/ -- R00 NS080911/NS/NINDS NIH HHS/ -- R00NS080911/NS/NINDS NIH HHS/ -- R01 ES024984/ES/NIEHS NIH HHS/ -- T32 GM008666/GM/NIGMS NIH HHS/ -- U01 ES017166/ES/NIEHS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Jul 9;523(7559):212-6. doi: 10.1038/nature14465. Epub 2015 Jun 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Bioinformatics Program, University of California, San Diego, La Jolla, California 92093, USA [2] Genomic Analysis Laboratory, The Salk Institute for Biological Studies, La Jolla, California 92037, USA. ; Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, USA. ; Genomic Analysis Laboratory, The Salk Institute for Biological Studies, La Jolla, California 92037, USA. ; 1] Computational Neurobiology Laboratory, The Salk Institute for Biological Studies, La Jolla, California 92037, USA [2] Department of Cognitive Science, University of California, San Diego, La Jolla, California 92037, USA. ; Ludwig Institute for Cancer Research, La Jolla, California 92093, USA. ; Department of Genetics, Stanford University, 300 Pasteur Drive, M-344 Stanford, California 94305, USA. ; Department of Surgery, Washington University School of Medicine, 660 South Euclid Avenue, Campus Box 8109, St Louis, Missouri 63110, USA. ; Bioinformatics Program, University of California, San Diego, La Jolla, California 92093, USA. ; 1] Ludwig Institute for Cancer Research, La Jolla, California 92093, USA [2] University of California, San Diego School of Medicine, Department of Cellular and Molecular Medicine, Institute of Genomic Medicine, La Jolla, California 92093, USA. ; 1] Computational Neurobiology Laboratory, The Salk Institute for Biological Studies, La Jolla, California 92037, USA [2] Division of Biological Sciences, University of California at San Diego, La Jolla, California 92037, USA [3] Howard Hughes Medical Institute, The Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, California 92037, USA. ; 1] Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, USA [2] Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, California 92093, USA. ; 1] Genomic Analysis Laboratory, The Salk Institute for Biological Studies, La Jolla, California 92037, USA [2] Howard Hughes Medical Institute, The Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, California 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26030523" target="_blank"〉PubMed〈/a〉
    Keywords: Age Factors ; Alleles ; Chromosome Mapping ; *DNA Methylation ; *Epigenesis, Genetic ; Female ; Gene Expression Profiling ; Gene Expression Regulation ; Genetic Variation ; Humans ; Male ; Organ Specificity
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  • 4
    Publication Date: 2014-11-14
    Description: Evolutionary expansion of the human neocortex underlies many of our unique mental abilities. This expansion has been attributed to the increased proliferative potential of radial glia (RG; neural stem cells) and their subventricular dispersion from the periventricular niche during neocortical development. Such adaptations may have evolved through gene expression changes in RG. However, whether or how RG gene expression varies between humans and other species is unknown. Here we show that the transcriptional profiles of human and mouse neocortical RG are broadly conserved during neurogenesis, yet diverge for specific signalling pathways. By analysing differential gene co-expression relationships between the species, we demonstrate that the growth factor PDGFD is specifically expressed by RG in human, but not mouse, corticogenesis. We also show that the expression domain of PDGFRbeta, the cognate receptor for PDGFD, is evolutionarily divergent, with high expression in the germinal region of dorsal human neocortex but not in the mouse. Pharmacological inhibition of PDGFD-PDGFRbeta signalling in slice culture prevents normal cell cycle progression of neocortical RG in human, but not mouse. Conversely, injection of recombinant PDGFD or ectopic expression of constitutively active PDGFRbeta in developing mouse neocortex increases the proportion of RG and their subventricular dispersion. These findings highlight the requirement of PDGFD-PDGFRbeta signalling for human neocortical development and suggest that local production of growth factors by RG supports the expanded germinal region and progenitor heterogeneity of species with large brains.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4231536/" 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/PMC4231536/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lui, Jan H -- Nowakowski, Tomasz J -- Pollen, Alex A -- Javaherian, Ashkan -- Kriegstein, Arnold R -- Oldham, Michael C -- R01 NS021223/NS/NINDS NIH HHS/ -- R01 NS072630/NS/NINDS NIH HHS/ -- R01 NS075998/NS/NINDS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2014 Nov 13;515(7526):264-8. doi: 10.1038/nature13973.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurology and The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, California 94143, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25391964" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Cycle ; Cell Proliferation ; Gene Expression Profiling ; Humans ; Lymphokines/genetics/*metabolism ; Mice ; Neocortex/cytology/growth & development/*metabolism ; Neuroglia/cytology/*metabolism ; Platelet-Derived Growth Factor/genetics/*metabolism ; Receptor, Platelet-Derived Growth Factor beta/*metabolism ; *Signal Transduction/genetics ; Transcription, Genetic
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  • 5
    Publication Date: 2014-11-11
    Description: The move of vertebrates to a terrestrial lifestyle required major adaptations in their locomotory apparatus and reproductive organs. While the fin-to-limb transition has received considerable attention, little is known about the developmental and evolutionary origins of external genitalia. Similarities in gene expression have been interpreted as a potential evolutionary link between the limb and genitals; however, no underlying developmental mechanism has been identified. We re-examined this question using micro-computed tomography, lineage tracing in three amniote clades, and RNA-sequencing-based transcriptional profiling. Here we show that the developmental origin of external genitalia has shifted through evolution, and in some taxa limbs and genitals share a common primordium. In squamates, the genitalia develop directly from the budding hindlimbs, or the remnants thereof, whereas in mice the genital tubercle originates from the ventral and tail bud mesenchyme. The recruitment of different cell populations for genital outgrowth follows a change in the relative position of the cloaca, the genitalia organizing centre. Ectopic grafting of the cloaca demonstrates the conserved ability of different mesenchymal cells to respond to these genitalia-inducing signals. Our results support a limb-like developmental origin of external genitalia as the ancestral condition. Moreover, they suggest that a change in the relative position of the cloacal signalling centre during evolution has led to an altered developmental route for external genitalia in mammals, while preserving parts of the ancestral limb molecular circuitry owing to a common evolutionary origin.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4294627/" 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/PMC4294627/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tschopp, Patrick -- Sherratt, Emma -- Sanger, Thomas J -- Groner, Anna C -- Aspiras, Ariel C -- Hu, Jimmy K -- Pourquie, Olivier -- Gros, Jerome -- Tabin, Clifford J -- R37 HD032443/HD/NICHD NIH HHS/ -- R37-HD032443/HD/NICHD NIH HHS/ -- England -- Nature. 2014 Dec 18;516(7531):391-4. doi: 10.1038/nature13819. Epub 2014 Nov 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Harvard Medical School, Boston, Massachusetts 02115, USA. ; Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts 02138, USA. ; Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts 02115, USA. ; 1] Department of Genetics, Harvard Medical School, Boston, Massachusetts 02115, USA [2] Institut de Genetique et de Biologie Moleculaire et Cellulaire (IGBMC), 67400 Illkirch, France [3] Department of Pathology, Brigham and Women's Hospital, Boston, Massachusetts 02115, USA. ; Developmental and Stem Cell Biology Department, Institut Pasteur, 75724 Paris Cedex 15, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25383527" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Cell Lineage ; Cloaca/anatomy & histology/*embryology ; Gene Expression Profiling ; Gene Expression Regulation, Developmental ; Genitalia/anatomy & histology/*embryology/metabolism ; Mice ; Phylogeny ; Signal Transduction ; Snakes/embryology ; Tissue Transplantation ; X-Ray Microtomography
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  • 6
    Publication Date: 2011-01-21
    Description: Cutaneous malignant melanoma is a highly aggressive and frequently chemoresistant cancer, the incidence of which continues to rise. Epidemiological studies show that the major aetiological melanoma risk factor is ultraviolet (UV) solar radiation, with the highest risk associated with intermittent burning doses, especially during childhood. We have experimentally validated these epidemiological findings using the hepatocyte growth factor/scatter factor transgenic mouse model, which develops lesions in stages highly reminiscent of human melanoma with respect to biological, genetic and aetiological criteria, but only when irradiated as neonatal pups with UVB, not UVA. However, the mechanisms underlying UVB-initiated, neonatal-specific melanomagenesis remain largely unknown. Here we introduce a mouse model permitting fluorescence-aided melanocyte imaging and isolation following in vivo UV irradiation. We use expression profiling to show that activated neonatal skin melanocytes isolated following a melanomagenic UVB dose bear a distinct, persistent interferon response signature, including genes associated with immunoevasion. UVB-induced melanocyte activation, characterized by aberrant growth and migration, was abolished by antibody-mediated systemic blockade of interferon-gamma (IFN-gamma), but not type-I interferons. IFN-gamma was produced by macrophages recruited to neonatal skin by UVB-induced ligands to the chemokine receptor Ccr2. Admixed recruited skin macrophages enhanced transplanted melanoma growth by inhibiting apoptosis; notably, IFN-gamma blockade abolished macrophage-enhanced melanoma growth and survival. IFN-gamma-producing macrophages were also identified in 70% of human melanomas examined. Our data reveal an unanticipated role for IFN-gamma in promoting melanocytic cell survival/immunoevasion, identifying a novel candidate therapeutic target for a subset of melanoma patients.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3140101/" 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/PMC3140101/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zaidi, M Raza -- Davis, Sean -- Noonan, Frances P -- Graff-Cherry, Cari -- Hawley, Teresa S -- Walker, Robert L -- Feigenbaum, Lionel -- Fuchs, Elaine -- Lyakh, Lyudmila -- Young, Howard A -- Hornyak, Thomas J -- Arnheiter, Heinz -- Trinchieri, Giorgio -- Meltzer, Paul S -- De Fabo, Edward C -- Merlino, Glenn -- CA53765/CA/NCI NIH HHS/ -- CA92258/CA/NCI NIH HHS/ -- R01 CA053765-10S1/CA/NCI NIH HHS/ -- R01 CA092258-05/CA/NCI NIH HHS/ -- Intramural NIH HHS/ -- England -- Nature. 2011 Jan 27;469(7331):548-53. doi: 10.1038/nature09666. Epub 2011 Jan 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Cancer Biology and Genetics, National Cancer Institute, Bethesda, Maryland 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21248750" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Disease Models, Animal ; Female ; Gene Expression Profiling ; Gene Expression Regulation, Developmental/radiation effects ; Humans ; Interferon-gamma/*metabolism ; Macrophages/metabolism/radiation effects ; Male ; Melanocytes/*metabolism/radiation effects ; Melanoma/*physiopathology ; Mice ; *Ultraviolet Rays
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  • 7
    Publication Date: 2011-03-25
    Description: The most common mutation in human melanoma, BRAF(V600E), activates the serine/threonine kinase BRAF and causes excessive activity in the mitogen-activated protein kinase pathway. BRAF(V600E) mutations are also present in benign melanocytic naevi, highlighting the importance of additional genetic alterations in the genesis of malignant tumours. Such changes include recurrent copy number variations that result in the amplification of oncogenes. For certain amplifications, the large number of genes in the interval has precluded an understanding of the cooperating oncogenic events. Here we have used a zebrafish melanoma model to test genes in a recurrently amplified region of chromosome 1 for the ability to cooperate with BRAF(V600E) and accelerate melanoma. SETDB1, an enzyme that methylates histone H3 on lysine 9 (H3K9), was found to accelerate melanoma formation significantly in zebrafish. Chromatin immunoprecipitation coupled with massively parallel DNA sequencing and gene expression analyses uncovered genes, including HOX genes, that are transcriptionally dysregulated in response to increased levels of SETDB1. Our studies establish SETDB1 as an oncogene in melanoma and underscore the role of chromatin factors in regulating tumorigenesis.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3348545/" 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/PMC3348545/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ceol, Craig J -- Houvras, Yariv -- Jane-Valbuena, Judit -- Bilodeau, Steve -- Orlando, David A -- Battisti, Valentine -- Fritsch, Lauriane -- Lin, William M -- Hollmann, Travis J -- Ferre, Fabrizio -- Bourque, Caitlin -- Burke, Christopher J -- Turner, Laura -- Uong, Audrey -- Johnson, Laura A -- Beroukhim, Rameen -- Mermel, Craig H -- Loda, Massimo -- Ait-Si-Ali, Slimane -- Garraway, Levi A -- Young, Richard A -- Zon, Leonard I -- CA103846/CA/NCI NIH HHS/ -- CA146455/CA/NCI NIH HHS/ -- DK055381/DK/NIDDK NIH HHS/ -- HG002668/HG/NHGRI NIH HHS/ -- K08 DK075432/DK/NIDDK NIH HHS/ -- K08 DK075432-04/DK/NIDDK NIH HHS/ -- K08DK075432-04/DK/NIDDK NIH HHS/ -- K99AR056899-02/AR/NIAMS NIH HHS/ -- R00 AR056899/AR/NIAMS NIH HHS/ -- R00 AR056899-02/AR/NIAMS NIH HHS/ -- R01 CA103846/CA/NCI NIH HHS/ -- R01 CA103846-09/CA/NCI NIH HHS/ -- R01 CA146445/CA/NCI NIH HHS/ -- R01 CA146445-03/CA/NCI NIH HHS/ -- R01 HG002668/HG/NHGRI NIH HHS/ -- R01 HG002668-08/HG/NHGRI NIH HHS/ -- T32 GM007753/GM/NIGMS NIH HHS/ -- Canadian Institutes of Health Research/Canada -- Howard Hughes Medical Institute/ -- England -- Nature. 2011 Mar 24;471(7339):513-7. doi: 10.1038/nature09806.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Stem Cell Program and Hematology/Oncology, Children's Hospital Boston, Howard Hughes Medical Institute, Harvard Medical School, Boston, Massachusetts 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21430779" target="_blank"〉PubMed〈/a〉
    Keywords: Age of Onset ; Amino Acid Substitution ; Animals ; Animals, Genetically Modified ; Cell Transformation, Neoplastic/genetics ; Chromatin Immunoprecipitation ; Chromosomes, Human, Pair 1/genetics ; DNA Copy Number Variations/*genetics ; Disease Models, Animal ; Gene Amplification/*genetics ; Gene Expression Profiling ; Gene Expression Regulation, Neoplastic/genetics ; Genes, Homeobox/genetics ; Histone-Lysine N-Methyltransferase/*genetics/metabolism ; Humans ; Melanocytes/cytology/enzymology/metabolism/pathology ; Melanoma/enzymology/*genetics/*pathology ; Nevus/enzymology ; Oncogenes/genetics ; Protein Methyltransferases/*genetics/*metabolism ; Proto-Oncogene Proteins B-raf/chemistry/genetics/metabolism ; Zebrafish/genetics
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  • 8
    Publication Date: 2011-04-29
    Description: Site-specific recognition of DNA in eukaryotic organisms depends on the arrangement of nucleosomes in chromatin. In the yeast Saccharomyces cerevisiae, ISW1a and related chromatin remodelling factors are implicated in establishing the nucleosome repeat during replication and altering nucleosome position to affect gene activity. Here we have solved the crystal structures of S. cerevisiae ISW1a lacking its ATPase domain both alone and with DNA bound at resolutions of 3.25 A and 3.60 A, respectively, and we have visualized two different nucleosome-containing remodelling complexes using cryo-electron microscopy. The composite X-ray and electron microscopy structures combined with site-directed photocrosslinking analyses of these complexes suggest that ISW1a uses a dinucleosome substrate for chromatin remodelling. Results from a remodelling assay corroborate the dinucleosome model. We show how a chromatin remodelling factor could set the spacing between two adjacent nucleosomes acting as a 'protein ruler'.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yamada, Kazuhiro -- Frouws, Timothy D -- Angst, Brigitte -- Fitzgerald, Daniel J -- DeLuca, Carl -- Schimmele, Kyoko -- Sargent, David F -- Richmond, Timothy J -- England -- Nature. 2011 Apr 28;472(7344):448-53. doi: 10.1038/nature09947.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉ETH Zurich, Institute of Molecular Biology and Biophysics, Schafmattstr. 20, CH-8093 Zurich, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21525927" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphatases/*chemistry/*metabolism ; Animals ; *Chromatin Assembly and Disassembly ; Cryoelectron Microscopy ; Crystallography, X-Ray ; DNA/chemistry/genetics/metabolism ; DNA-Binding Proteins/*chemistry/*metabolism ; Models, Biological ; Models, Molecular ; Nucleosomes/chemistry/genetics/*metabolism ; Protein Conformation ; Saccharomyces cerevisiae/*chemistry/genetics ; Saccharomyces cerevisiae Proteins/*chemistry/*metabolism ; Xenopus laevis
    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: 2012-10-05
    Description: Arsenate and phosphate are abundant on Earth and have striking similarities: nearly identical pK(a) values, similarly charged oxygen atoms, and thermochemical radii that differ by only 4% (ref. 3). Phosphate is indispensable and arsenate is toxic, but this extensive similarity raises the question whether arsenate may substitute for phosphate in certain niches. However, whether it is used or excluded, discriminating phosphate from arsenate is a paramount challenge. Enzymes that utilize phosphate, for example, have the same binding mode and kinetic parameters as arsenate, and the latter's presence therefore decouples metabolism. Can proteins discriminate between these two anions, and how would they do so? In particular, cellular phosphate uptake systems face a challenge in arsenate-rich environments. Here we describe a molecular mechanism for this process. We examined the periplasmic phosphate-binding proteins (PBPs) of the ABC-type transport system that mediates phosphate uptake into bacterial cells, including two PBPs from the arsenate-rich Mono Lake Halomonas strain GFAJ-1. All PBPs tested are capable of discriminating phosphate over arsenate at least 500-fold. The exception is one of the PBPs of GFAJ-1 that shows roughly 4,500-fold discrimination and its gene is highly expressed under phosphate-limiting conditions. Sub-angstrom-resolution structures of Pseudomonas fluorescens PBP with both arsenate and phosphate show a unique mode of binding that mediates discrimination. An extensive network of dipole-anion interactions, and of repulsive interactions, results in the 4% larger arsenate distorting a unique low-barrier hydrogen bond. These features enable the phosphate transport system to bind phosphate selectively over arsenate (at least 10(3) excess) even in highly arsenate-rich environments.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Elias, Mikael -- Wellner, Alon -- Goldin-Azulay, Korina -- Chabriere, Eric -- Vorholt, Julia A -- Erb, Tobias J -- Tawfik, Dan S -- England -- Nature. 2012 Nov 1;491(7422):134-7. doi: 10.1038/nature11517. Epub 2012 Oct 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel. mikael.elias@weizmann.ac.il〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23034649" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Arsenates/*chemistry/*metabolism ; Binding Sites ; Biological Transport ; Crystallography, X-Ray ; Drug Resistance, Bacterial ; Ecosystem ; Escherichia coli/chemistry ; Hydrogen Bonding ; Lakes/microbiology ; Models, Molecular ; Periplasmic Binding Proteins/chemistry/genetics/metabolism ; Phosphate-Binding Proteins/*chemistry/genetics/*metabolism ; Phosphates/*chemistry/*metabolism ; Pseudomonas fluorescens/*chemistry ; Substrate Specificity
    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: 2015-12-18
    Description: A central question in protein evolution is the extent to which naturally occurring proteins sample the space of folded structures accessible to the polypeptide chain. Repeat proteins composed of multiple tandem copies of a modular structure unit are widespread in nature and have critical roles in molecular recognition, signalling, and other essential biological processes. Naturally occurring repeat proteins have been re-engineered for molecular recognition and modular scaffolding applications. Here we use computational protein design to investigate the space of folded structures that can be generated by tandem repeating a simple helix-loop-helix-loop structural motif. Eighty-three designs with sequences unrelated to known repeat proteins were experimentally characterized. Of these, 53 are monomeric and stable at 95 degrees C, and 43 have solution X-ray scattering spectra consistent with the design models. Crystal structures of 15 designs spanning a broad range of curvatures are in close agreement with the design models with root mean square deviations ranging from 0.7 to 2.5 A. Our results show that existing repeat proteins occupy only a small fraction of the possible repeat protein sequence and structure space and that it is possible to design novel repeat proteins with precisely specified geometries, opening up a wide array of new possibilities for biomolecular engineering.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brunette, T J -- Parmeggiani, Fabio -- Huang, Po-Ssu -- Bhabha, Gira -- Ekiert, Damian C -- Tsutakawa, Susan E -- Hura, Greg L -- Tainer, John A -- Baker, David -- GM105404/GM/NIGMS NIH HHS/ -- K99GM112982/GM/NIGMS NIH HHS/ -- R01 GM105404/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Dec 24;528(7583):580-4. doi: 10.1038/nature16162. Epub 2015 Dec 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, University of Washington, Seattle, Washington 98195, USA. ; Institute for Protein Design, University of Washington, Seattle, Washington 98195, USA. ; Department of Cellular and Molecular Pharmacology, UCSF, San Francisco, California 94158, USA. ; Department of Microbiology and Immunology, UCSF, San Francisco, California 94158, USA. ; Molecular Biophysics &Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA. ; Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, USA. ; Department of Molecular and Cellular Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030, USA. ; Howard Hughes Medical Institute, University of Washington, Seattle, Washington 98195, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26675729" target="_blank"〉PubMed〈/a〉
    Keywords: *Amino Acid Motifs ; Amino Acid Sequence ; *Bioengineering ; *Computer Simulation ; Crystallography, X-Ray ; Models, Molecular ; *Protein Conformation ; Protein Folding ; Protein Stability ; Proteins/*chemistry ; Temperature
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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