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  • 1
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    TtAgo complexes with guide and target DNA [Biochemistry] (2014)
    National Academy of Sciences
    Details
    Publication Date: 2014-01-15
    Description: We report on crystal structures of ternary Thermus thermophilus Argonaute (TtAgo) complexes with 5′-phosphorylated guide DNA and a series of DNA targets. These ternary complex structures of cleavage-incompatible, cleavage-compatible, and postcleavage states solved at improved resolution up to 2.2 Å have provided molecular insights into the orchestrated positioning of catalytic...
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 2
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    TRIM24 links a non-canonical histone signature to breast cancer (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-12-18
    Description: Recognition of modified histone species by distinct structural domains within 'reader' proteins plays a critical role in the regulation of gene expression. Readers that simultaneously recognize histones with multiple marks allow transduction of complex chromatin modification patterns into specific biological outcomes. Here we report that chromatin regulator tripartite motif-containing 24 (TRIM24) functions in humans as a reader of dual histone marks by means of tandem plant homeodomain (PHD) and bromodomain (Bromo) regions. The three-dimensional structure of the PHD-Bromo region of TRIM24 revealed a single functional unit for combinatorial recognition of unmodified H3K4 (that is, histone H3 unmodified at lysine 4, H3K4me0) and acetylated H3K23 (histone H3 acetylated at lysine 23, H3K23ac) within the same histone tail. TRIM24 binds chromatin and oestrogen receptor to activate oestrogen-dependent genes associated with cellular proliferation and tumour development. Aberrant expression of TRIM24 negatively correlates with survival of breast cancer patients. The PHD-Bromo of TRIM24 provides a structural rationale for chromatin activation through a non-canonical histone signature, establishing a new route by which chromatin readers may influence cancer pathogenesis.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3058826/" 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/PMC3058826/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tsai, Wen-Wei -- Wang, Zhanxin -- Yiu, Teresa T -- Akdemir, Kadir C -- Xia, Weiya -- Winter, Stefan -- Tsai, Cheng-Yu -- Shi, Xiaobing -- Schwarzer, Dirk -- Plunkett, William -- Aronow, Bruce -- Gozani, Or -- Fischle, Wolfgang -- Hung, Mien-Chie -- Patel, Dinshaw J -- Barton, Michelle Craig -- GM079641/GM/NIGMS NIH HHS/ -- GM081627/GM/NIGMS NIH HHS/ -- P01 GM081627/GM/NIGMS NIH HHS/ -- P01 GM081627-010003/GM/NIGMS NIH HHS/ -- P01 GM081627-020003/GM/NIGMS NIH HHS/ -- P30 EB009998/EB/NIBIB NIH HHS/ -- P30DK078392-01/DK/NIDDK NIH HHS/ -- T32 HD07325/HD/NICHD NIH HHS/ -- U54 RR025216/RR/NCRR NIH HHS/ -- UL1 TR000077/TR/NCATS NIH HHS/ -- England -- Nature. 2010 Dec 16;468(7326):927-32. doi: 10.1038/nature09542.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biology, Program in Genes and Development, Graduate School of Biomedical Sciences, University of Texas M.D. Anderson Cancer Center, Houston, Texas 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21164480" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylation ; Breast Neoplasms/*genetics/*metabolism/pathology ; Carrier Proteins/chemistry/genetics/*metabolism ; Cell Line, Tumor ; Chromatin/metabolism ; Chromatin Assembly and Disassembly ; Crystallography, X-Ray ; Estrogen Receptor alpha/metabolism ; Estrogens/metabolism ; *Gene Expression Regulation, Neoplastic/genetics ; HEK293 Cells ; Histones/chemistry/*metabolism ; Humans ; Methylation ; Protein Array Analysis ; Protein Binding ; Protein Structure, Tertiary ; Substrate Specificity ; Survival Rate
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 3
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    DNA repair: How to accurately bypass damage (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-06-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Broyde, Suse -- Patel, Dinshaw J -- R01 CA028038/CA/NCI NIH HHS/ -- England -- Nature. 2010 Jun 24;465(7301):1023-4. doi: 10.1038/4651023a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20577203" target="_blank"〉PubMed〈/a〉
    Keywords: Biocatalysis ; Crystallography, X-Ray ; DNA/chemistry/metabolism ; *DNA Damage ; *DNA Repair ; DNA-Directed DNA Polymerase/*chemistry/genetics/*metabolism ; Humans ; Models, Molecular ; Mutation, Missense/genetics ; Pyrimidine Dimers/chemistry/*metabolism ; Saccharomyces cerevisiae/*enzymology/genetics ; Skin Neoplasms/enzymology/genetics ; Structure-Activity Relationship ; Xeroderma Pigmentosum/enzymology/genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 4
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    Structure-based mechanistic insights into DNMT1-mediated maintenance DNA methylation (2012)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2012-02-11
    Description: DNMT1, the major maintenance DNA methyltransferase in animals, helps to regulate gene expression, genome imprinting, and X-chromosome inactivation. We report on the crystal structure of a productive covalent mouse DNMT1(731-1602)-DNA complex containing a central hemimethylated CpG site. The methyl group of methylcytosine is positioned within a shallow hydrophobic concave surface, whereas the cytosine on the target strand is looped out and covalently anchored within the catalytic pocket. The DNA is distorted at the hemimethylated CpG step, with side chains from catalytic and recognition loops inserting through both grooves to fill an intercalation-type cavity associated with a dual base flip-out on partner strands. Structural and biochemical data establish how a combination of active and autoinhibitory mechanisms ensures the high fidelity of DNMT1-mediated maintenance DNA methylation.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4693633/" 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/PMC4693633/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Song, Jikui -- Teplova, Marianna -- Ishibe-Murakami, Satoko -- Patel, Dinshaw J -- P30 CA008748/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2012 Feb 10;335(6069):709-12. doi: 10.1126/science.1214453.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Structural Biology Program, Memorial Sloan-Kettering Cancer Center, New York, NY 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22323818" target="_blank"〉PubMed〈/a〉
    Keywords: 5-Methylcytosine/chemistry/metabolism ; Animals ; Base Pairing ; Catalytic Domain ; Crystallography, X-Ray ; DNA/chemistry/*metabolism ; DNA (Cytosine-5-)-Methyltransferase/*chemistry/genetics/*metabolism ; *DNA Methylation ; Dinucleoside Phosphates/chemistry ; Hydrophobic and Hydrophilic Interactions ; Mice ; Models, Molecular ; Protein Conformation ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Substrate Specificity
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
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    Dicer recognizes the 5' end of RNA for efficient and accurate processing (2011)
    Nature Publishing Group (NPG)
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    Publication Date: 2011-07-15
    Description: A hallmark of RNA silencing is a class of approximately 22-nucleotide RNAs that are processed from double-stranded RNA precursors by Dicer. Accurate processing by Dicer is crucial for the functionality of microRNAs (miRNAs). The current model posits that Dicer selects cleavage sites by measuring a set distance from the 3' overhang of the double-stranded RNA terminus. Here we report that human Dicer anchors not only the 3' end but also the 5' end, with the cleavage site determined mainly by the distance ( approximately 22 nucleotides) from the 5' end (5' counting rule). This cleavage requires a 5'-terminal phosphate group. Further, we identify a novel basic motif (5' pocket) in human Dicer that recognizes the 5'-phosphorylated end. The 5' counting rule and the 5' anchoring residues are conserved in Drosophila Dicer-1, but not in Giardia Dicer. Mutations in the 5' pocket reduce processing efficiency and alter cleavage sites in vitro. Consistently, miRNA biogenesis is perturbed in vivo when Dicer-null embryonic stem cells are replenished with the 5'-pocket mutant. Thus, 5'-end recognition by Dicer is important for precise and effective biogenesis of miRNAs. Insights from this study should also afford practical benefits to the design of small hairpin RNAs.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4693635/" 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/PMC4693635/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Park, Jong-Eun -- Heo, Inha -- Tian, Yuan -- Simanshu, Dhirendra K -- Chang, Hyeshik -- Jee, David -- Patel, Dinshaw J -- Kim, V Narry -- P30 CA008748/CA/NCI NIH HHS/ -- R01 AI068776/AI/NIAID NIH HHS/ -- England -- Nature. 2011 Jul 13;475(7355):201-5. doi: 10.1038/nature10198.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Biological Sciences, Seoul National University, Seoul 151-742, Korea.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21753850" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Binding Sites/genetics ; DEAD-box RNA Helicases/deficiency/genetics/*metabolism ; Drosophila Proteins/metabolism ; Embryonic Stem Cells/metabolism ; Evolution, Molecular ; Giardia/enzymology ; HEK293 Cells ; Humans ; MicroRNAs/biosynthesis/chemistry/genetics/*metabolism ; Molecular Sequence Data ; Mutant Proteins/chemistry/genetics/metabolism ; Mutation/genetics ; Phosphates/metabolism ; Phosphorylation ; RNA Helicases/metabolism ; Ribonuclease III/deficiency/genetics/*metabolism ; Substrate Specificity/genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 6
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    A selective jumonji H3K27 demethylase inhibitor modulates the proinflammatory macrophage response (2012)
    Nature Publishing Group (NPG)
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    Publication Date: 2012-07-31
    Description: The jumonji (JMJ) family of histone demethylases are Fe2+- and alpha-ketoglutarate-dependent oxygenases that are essential components of regulatory transcriptional chromatin complexes. These enzymes demethylate lysine residues in histones in a methylation-state and sequence-specific context. Considerable effort has been devoted to gaining a mechanistic understanding of the roles of histone lysine demethylases in eukaryotic transcription, genome integrity and epigenetic inheritance, as well as in development, physiology and disease. However, because of the absence of any selective inhibitors, the relevance of the demethylase activity of JMJ enzymes in regulating cellular responses remains poorly understood. Here we present a structure-guided small-molecule and chemoproteomics approach to elucidating the functional role of the H3K27me3-specific demethylase subfamily (KDM6 subfamily members JMJD3 and UTX). The liganded structures of human and mouse JMJD3 provide novel insight into the specificity determinants for cofactor, substrate and inhibitor recognition by the KDM6 subfamily of demethylases. We exploited these structural features to generate the first small-molecule catalytic site inhibitor that is selective for the H3K27me3-specific JMJ subfamily. We demonstrate that this inhibitor binds in a novel manner and reduces lipopolysaccharide-induced proinflammatory cytokine production by human primary macrophages, a process that depends on both JMJD3 and UTX. Our results resolve the ambiguity associated with the catalytic function of H3K27-specific JMJs in regulating disease-relevant inflammatory responses and provide encouragement for designing small-molecule inhibitors to allow selective pharmacological intervention across the JMJ family.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4691848/" 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/PMC4691848/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kruidenier, Laurens -- Chung, Chun-wa -- Cheng, Zhongjun -- Liddle, John -- Che, KaHing -- Joberty, Gerard -- Bantscheff, Marcus -- Bountra, Chas -- Bridges, Angela -- Diallo, Hawa -- Eberhard, Dirk -- Hutchinson, Sue -- Jones, Emma -- Katso, Roy -- Leveridge, Melanie -- Mander, Palwinder K -- Mosley, Julie -- Ramirez-Molina, Cesar -- Rowland, Paul -- Schofield, Christopher J -- Sheppard, Robert J -- Smith, Julia E -- Swales, Catherine -- Tanner, Robert -- Thomas, Pamela -- Tumber, Anthony -- Drewes, Gerard -- Oppermann, Udo -- Patel, Dinshaw J -- Lee, Kevin -- Wilson, David M -- 092809/Wellcome Trust/United Kingdom -- 18358/Arthritis Research UK/United Kingdom -- P30 CA008748/CA/NCI NIH HHS/ -- Canadian Institutes of Health Research/Canada -- Wellcome Trust/United Kingdom -- England -- Nature. 2012 Aug 16;488(7411):404-8. doi: 10.1038/nature11262.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Epinova DPU, Immuno-Inflammation Therapy Area, GlaxoSmithKline R&D, Medicines Research Centre, Stevenage SG1 2NY, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22842901" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Biocatalysis/drug effects ; Catalytic Domain ; Cells, Cultured ; Enzyme Inhibitors/metabolism/*pharmacology ; Evolution, Molecular ; Histones/chemistry/metabolism ; Humans ; Inhibitory Concentration 50 ; Jumonji Domain-Containing Histone Demethylases/*antagonists & ; inhibitors/chemistry/classification/metabolism ; Lysine/metabolism ; Macrophages/*drug effects/enzymology/*immunology/metabolism ; Methylation/drug effects ; Mice ; Models, Molecular ; Substrate Specificity ; Tumor Necrosis Factor-alpha/biosynthesis
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 7
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    Structure of yeast Argonaute with guide RNA (2012)
    Nature Publishing Group (NPG)
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    Publication Date: 2012-06-23
    Description: The RNA-induced silencing complex, comprising Argonaute and guide RNA, mediates RNA interference. Here we report the 3.2 A crystal structure of Kluyveromyces polysporus Argonaute (KpAGO) fortuitously complexed with guide RNA originating from small-RNA duplexes autonomously loaded by recombinant KpAGO. Despite their diverse sequences, guide-RNA nucleotides 1-8 are positioned similarly, with sequence-independent contacts to bases, phosphates and 2'-hydroxyl groups pre-organizing the backbone of nucleotides 2-8 in a near-A-form conformation. Compared with prokaryotic Argonautes, KpAGO has numerous surface-exposed insertion segments, with a cluster of conserved insertions repositioning the N domain to enable full propagation of guide-target pairing. Compared with Argonautes in inactive conformations, KpAGO has a hydrogen-bond network that stabilizes an expanded and repositioned loop, which inserts an invariant glutamate into the catalytic pocket. Mutation analyses and analogies to ribonuclease H indicate that insertion of this glutamate finger completes a universally conserved catalytic tetrad, thereby activating Argonaute for RNA cleavage.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3853139/" 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/PMC3853139/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nakanishi, Kotaro -- Weinberg, David E -- Bartel, David P -- Patel, Dinshaw J -- AI068776/AI/NIAID NIH HHS/ -- GM61835/GM/NIGMS NIH HHS/ -- R01 AI068776/AI/NIAID NIH HHS/ -- R01 GM061835/GM/NIGMS NIH HHS/ -- R37 GM061835/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2012 Jun 20;486(7403):368-74. doi: 10.1038/nature11211.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Structural Biology Program, 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/22722195" target="_blank"〉PubMed〈/a〉
    Keywords: Argonaute Proteins/*chemistry/*metabolism ; Base Sequence ; Biocatalysis ; Catalytic Domain ; Crystallography, X-Ray ; Eukaryotic Cells/chemistry/enzymology ; Fungal Proteins/*chemistry/*metabolism ; Kluyveromyces/*chemistry/enzymology ; Models, Molecular ; Molecular Conformation ; Molecular Sequence Data ; RNA, Guide/*chemistry/genetics/*metabolism ; Saccharomycetales/enzymology/genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 8
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    Polymerase IV occupancy at RNA-directed DNA methylation sites requires SHH1 (2013)
    Nature Publishing Group (NPG)
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    Publication Date: 2013-05-03
    Description: DNA methylation is an epigenetic modification that has critical roles in gene silencing, development and genome integrity. In Arabidopsis, DNA methylation is established by DOMAINS REARRANGED METHYLTRANSFERASE 2 (DRM2) and targeted by 24-nucleotide small interfering RNAs (siRNAs) through a pathway termed RNA-directed DNA methylation (RdDM). This pathway requires two plant-specific RNA polymerases: Pol-IV, which functions to initiate siRNA biogenesis, and Pol-V, which functions to generate scaffold transcripts that recruit downstream RdDM factors. To understand the mechanisms controlling Pol-IV targeting we investigated the function of SAWADEE HOMEODOMAIN HOMOLOG 1 (SHH1), a Pol-IV-interacting protein. Here we show that SHH1 acts upstream in the RdDM pathway to enable siRNA production from a large subset of the most active RdDM targets, and that SHH1 is required for Pol-IV occupancy at these same loci. We also show that the SHH1 SAWADEE domain is a novel chromatin-binding module that adopts a unique tandem Tudor-like fold and functions as a dual lysine reader, probing for both unmethylated K4 and methylated K9 modifications on the histone 3 (H3) tail. Finally, we show that key residues within both lysine-binding pockets of SHH1 are required in vivo to maintain siRNA and DNA methylation levels as well as Pol-IV occupancy at RdDM targets, demonstrating a central role for methylated H3K9 binding in SHH1 function and providing the first insights into the mechanism of Pol-IV targeting. Given the parallels between methylation systems in plants and mammals, a further understanding of this early targeting step may aid our ability to control the expression of endogenous and newly introduced genes, which has broad implications for agriculture and gene therapy.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4119789/" 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/PMC4119789/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Law, Julie A -- Du, Jiamu -- Hale, Christopher J -- Feng, Suhua -- Krajewski, Krzysztof -- Palanca, Ana Marie S -- Strahl, Brian D -- Patel, Dinshaw J -- Jacobsen, Steven E -- GM60398/GM/NIGMS NIH HHS/ -- GM85394/GM/NIGMS NIH HHS/ -- R01 GM060398/GM/NIGMS NIH HHS/ -- R37 GM060398/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2013 Jun 20;498(7454):385-9. doi: 10.1038/nature12178. Epub 2013 May 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular, Cell and Developmental Biology, University of California at Los Angeles, Los Angeles, California 90095, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23636332" target="_blank"〉PubMed〈/a〉
    Keywords: Arabidopsis/*enzymology/genetics/*metabolism ; Arabidopsis Proteins/chemistry/genetics/*metabolism ; Binding Sites/genetics ; Chromatin/chemistry/genetics/metabolism ; Crystallography, X-Ray ; DNA Methylation/*genetics ; DNA-Directed RNA Polymerases/genetics/*metabolism ; Epigenesis, Genetic/genetics ; Histones/chemistry/metabolism ; Homeodomain Proteins/chemistry/*metabolism ; Lysine/chemistry/metabolism ; Methyltransferases/genetics/metabolism ; Models, Molecular ; Mutation ; Protein Folding ; Protein Structure, Tertiary ; RNA, Small Interfering/biosynthesis/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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  • 9
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    Non-vesicular trafficking by a ceramide-1-phosphate transfer protein regulates eicosanoids (2013)
    Nature Publishing Group (NPG)
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    Publication Date: 2013-07-19
    Description: Phosphorylated sphingolipids ceramide-1-phosphate (C1P) and sphingosine-1-phosphate (S1P) have emerged as key regulators of cell growth, survival, migration and inflammation. C1P produced by ceramide kinase is an activator of group IVA cytosolic phospholipase A2alpha (cPLA2alpha), the rate-limiting releaser of arachidonic acid used for pro-inflammatory eicosanoid production, which contributes to disease pathogenesis in asthma or airway hyper-responsiveness, cancer, atherosclerosis and thrombosis. To modulate eicosanoid action and avoid the damaging effects of chronic inflammation, cells require efficient targeting, trafficking and presentation of C1P to specific cellular sites. Vesicular trafficking is likely but non-vesicular mechanisms for C1P sensing, transfer and presentation remain unexplored. Moreover, the molecular basis for selective recognition and binding among signalling lipids with phosphate headgroups, namely C1P, phosphatidic acid or their lyso-derivatives, remains unclear. Here, a ubiquitously expressed lipid transfer protein, human GLTPD1, named here CPTP, is shown to specifically transfer C1P between membranes. Crystal structures establish C1P binding through a novel surface-localized, phosphate headgroup recognition centre connected to an interior hydrophobic pocket that adaptively expands to ensheath differing-length lipid chains using a cleft-like gating mechanism. The two-layer, alpha-helically-dominated 'sandwich' topology identifies CPTP as the prototype for a new glycolipid transfer protein fold subfamily. CPTP resides in the cell cytosol but associates with the trans-Golgi network, nucleus and plasma membrane. RNA interference-induced CPTP depletion elevates C1P steady-state levels and alters Golgi cisternae stack morphology. The resulting C1P decrease in plasma membranes and increase in the Golgi complex stimulates cPLA2alpha release of arachidonic acid, triggering pro-inflammatory eicosanoid generation.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3951269/" 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/PMC3951269/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Simanshu, Dhirendra K -- Kamlekar, Ravi Kanth -- Wijesinghe, Dayanjan S -- Zou, Xianqiong -- Zhai, Xiuhong -- Mishra, Shrawan K -- Molotkovsky, Julian G -- Malinina, Lucy -- Hinchcliffe, Edward H -- Chalfant, Charles E -- Brown, Rhoderick E -- Patel, Dinshaw J -- CA121493/CA/NCI NIH HHS/ -- CA154314/CA/NCI NIH HHS/ -- GM072754/GM/NIGMS NIH HHS/ -- GM45928/GM/NIGMS NIH HHS/ -- I01 BX001792/BX/BLRD VA/ -- R01 CA121493/CA/NCI NIH HHS/ -- R01 CA154314/CA/NCI NIH HHS/ -- R01 GM045928/GM/NIGMS NIH HHS/ -- R01 GM072754/GM/NIGMS NIH HHS/ -- R01 HL072925/HL/NHLBI NIH HHS/ -- S10 OD010641/OD/NIH HHS/ -- T32 008695/PHS HHS/ -- England -- Nature. 2013 Aug 22;500(7463):463-7. doi: 10.1038/nature12332. Epub 2013 Jul 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Structural Biology Program, 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/23863933" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoproteins/chemistry ; Arachidonic Acid/metabolism ; Biological Transport ; Carrier Proteins/chemistry/genetics/*metabolism ; Cell Membrane/metabolism ; Cell Nucleus/metabolism ; Ceramides/chemistry/*metabolism ; Crystallography, X-Ray ; Cytosol/metabolism ; Eicosanoids/*metabolism ; Humans ; Hydrophobic and Hydrophilic Interactions ; Mice ; Models, Molecular ; Phosphatidic Acids/chemistry/metabolism ; Protein Conformation ; Protein Folding ; Substrate Specificity ; trans-Golgi Network/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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    Kruidenier et al. reply (2014)
    Nature Publishing Group (NPG)
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    Publication Date: 2014-10-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kruidenier, Laurens -- Chung, Chun-wa -- Cheng, Zhongjun -- Liddle, John -- Che, KaHing -- Joberty, Gerard -- Bantscheff, Marcus -- Bountra, Chas -- Bridges, Angela -- Diallo, Hawa -- Eberhard, Dirk -- Hutchinson, Sue -- Jones, Emma -- Katso, Roy -- Leveridge, Melanie -- Mander, Palwinder K -- Mosley, Julie -- Ramirez-Molina, Cesar -- Rowland, Paul -- Schofield, Christopher J -- Sheppard, Robert J -- Smith, Julia E -- Swales, Catherine -- Tanner, Robert -- Thomas, Pamela -- Tumber, Anthony -- Drewes, Gerard -- Oppermann, Udo -- Patel, Dinshaw J -- Lee, Kevin -- Wilson, David M -- 092809/Wellcome Trust/United Kingdom -- England -- Nature. 2014 Oct 2;514(7520):E2. doi: 10.1038/nature13689.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Epinova DPU, Immuno-Inflammation Therapy Area, GlaxoSmithKline R&D, Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, UK. ; Platform Technology and Science, GlaxoSmithKline R&D, Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, UK. ; Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, New York 10065, USA. ; 1] Structural Genomics Consortium, University of Oxford, Old Road Campus, Roosevelt Drive, Headington OX3 7DQ, UK [2] Botnar Research Centre, NIHR Biomedical Research Unit, University of Oxford OX3 7LD, UK. ; Cellzome AG, Meyerhofstrasse 1, 69117 Heidelberg, Germany. ; Structural Genomics Consortium, University of Oxford, Old Road Campus, Roosevelt Drive, Headington OX3 7DQ, UK. ; Botnar Research Centre, NIHR Biomedical Research Unit, University of Oxford OX3 7LD, UK. ; 1] Epinova DPU, Immuno-Inflammation Therapy Area, GlaxoSmithKline R&D, Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, UK [2] Pfizer, Biotherapeutics R&D, 200 Cambridgepark Drive, Cambridge, Massachusetts 02140, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25279927" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Enzyme Inhibitors/*pharmacology ; Humans ; Jumonji Domain-Containing Histone Demethylases/*antagonists & inhibitors ; Macrophages/*drug effects/*immunology
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
    Location Call Number Expected Availability
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