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  • 1
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    Identification of small clusters of divergent amino acids that mediate the opposing effects of ras and Krev-1 (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-07-13
    Description: Krev-1 is an anti-oncogene that was originally identified by its ability to induce morphologic reversion of ras-transformed cells that continue to express the ras gene. The Krev-1-encoded protein is structurally related to Ras proteins. The biological activities of a series of ras-Krev-1 chimeras were studied to test the hypothesis that Krev-1 may directly interfere with a ras function. The ras-specific and Krev-1-specific amino acids immediately surrounding residues 32 to 44, which are identical between the two proteins, determined whether the protein induced cellular transformation or suppressed ras transformation. Because this region in Ras proteins has been implicated in effector function, the results suggest that Krev-1 suppresses ras-induced transformation by interfering with interaction of Ras with its effector.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, K -- Noda, M -- Vass, W C -- Papageorge, A G -- Lowy, D R -- New York, N.Y. -- Science. 1990 Jul 13;249(4965):162-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Cellular Oncology, National Cancer Institute, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2115210" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Amino Acids/*physiology ; Animals ; Cell Transformation, Neoplastic/*genetics ; Chimera ; GTP-Binding Proteins/*genetics ; *Gene Expression Regulation, Neoplastic ; *Genes, ras ; Harvey murine sarcoma virus/genetics ; Molecular Sequence Data ; Mutation ; Restriction Mapping ; *Suppression, Genetic ; rap GTP-Binding Proteins
    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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  • 2
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    Rtt109 acetylates histone H3 lysine 56 and functions in DNA replication (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-02-03
    Description: Acetylation of histone H3 lysine 56 (H3-K56) occurs in S phase, and cells lacking H3-K56 acetylation are sensitive to DNA-damaging agents. However, the histone acetyltransferase (HAT) that catalyzes global H3-K56 acetylation has not been found. Here we show that regulation of Ty1 transposition gene product 109 (Rtt109) is an H3-K56 HAT. Cells lacking Rtt109 or expressing rtt109 mutants with alterations at a conserved aspartate residue lose H3-K56 acetylation and exhibit increased sensitivity toward genotoxic agents, as well as elevated levels of spontaneous chromosome breaks. Thus, Rtt109, which shares no sequence homology with any other known HATs, is a unique HAT that acetylates H3-K56.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Han, Junhong -- Zhou, Hui -- Horazdovsky, Bruce -- Zhang, Kangling -- Xu, Rui-Ming -- Zhang, Zhiguo -- New York, N.Y. -- Science. 2007 Feb 2;315(5812):653-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, MN 55905, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17272723" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylation ; Amino Acid Sequence ; Camptothecin/pharmacology ; Catalytic Domain ; Chromosome Breakage ; DNA Damage ; *DNA Replication ; Histone Acetyltransferases/chemistry/genetics/*metabolism ; Histones/*metabolism ; Hydroxyurea/pharmacology ; Lysine/*metabolism ; Methyl Methanesulfonate/pharmacology ; Molecular Sequence Data ; Mutagenesis, Site-Directed ; Mutagens/pharmacology ; Mutation ; Recombinant Proteins/metabolism ; S Phase ; Saccharomyces cerevisiae/genetics/*metabolism ; Saccharomyces cerevisiae Proteins/chemistry/genetics/*metabolism ; Sequence Homology, Amino Acid
    Print ISSN: 0036-8075
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  • 3
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    Adenovirus small e1a alters global patterns of histone modification (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-08-23
    Description: Adenovirus small early region 1a (e1a) protein drives cells into S phase by binding RB family proteins and the closely related histone acetyl transferases p300 and CBP. The interaction with RB proteins displaces them from DNA-bound E2F transcription factors, reversing their repression of cell cycle genes. However, it has been unclear how the e1a interaction with p300 and CBP promotes passage through the cell cycle. We show that this interaction causes a threefold reduction in total cellular histone H3 lysine 18 acetylation (H3K18ac). CBP and p300 are required for acetylation at this site because their knockdown causes specific hypoacetylation at H3K18. SV40 T antigen also induces H3K18 hypoacetylation. Because global hypoacetylation at this site is observed in prostate carcinomas with poor prognosis, this suggests that processes resulting in global H3K18 hypoacetylation may be linked to oncogenic transformation.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2756290/" 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/PMC2756290/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Horwitz, Gregory A -- Zhang, Kangling -- McBrian, Matthew A -- Grunstein, Michael -- Kurdistani, Siavash K -- Berk, Arnold J -- CA25235/CA/NCI NIH HHS/ -- R37 CA025235/CA/NCI NIH HHS/ -- R37 CA025235-30/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2008 Aug 22;321(5892):1084-5. doi: 10.1126/science.1155544.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Biology Institute, University of California, Los Angeles, CA 90095, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18719283" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylation ; Adenovirus E1A Proteins/genetics/*metabolism ; Adenoviruses, Human/*metabolism ; Antigens, Polyomavirus Transforming/metabolism ; CREB-Binding Protein/metabolism ; *Cell Cycle ; Cell Line ; Cell Transformation, Viral ; Cells, Cultured ; HeLa Cells ; Histones/*metabolism ; Humans ; Lysine/metabolism ; Mutation ; p300-CBP Transcription Factors/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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  • 4
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    Clr4/Suv39 and RNA quality control factors cooperate to trigger RNAi and suppress antisense RNA (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-03-26
    Description: Pervasive transcription of eukaryotic genomes generates a plethora of noncoding RNAs. In fission yeast, the heterochromatin factor Clr4/Suv39 methyltransferase facilitates RNA interference (RNAi)-mediated processing of centromeric transcripts into small interfering RNAs (siRNAs). Clr4 also mediates degradation of antisense RNAs at euchromatic loci, but the underlying mechanism has remained elusive. We show that Clr4 and the RNAi effector RITS (RNA-induced transcriptional silencing) interact with Mlo3, a protein related to mRNA quality control and export factors. Loss of Clr4 impairs RITS interaction with Mlo3, which is required for centromeric siRNA production and antisense suppression. Mlo3 also interacts with the RNA surveillance factor TRAMP, which suppresses antisense RNAs targeted by Clr4 and RNAi. These findings link Clr4 to RNA quality control machinery and suggest a pathway for processing potentially deleterious RNAs through the coordinated actions of RNAi and other RNA processing activities.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Ke -- Fischer, Tamas -- Porter, Rebecca L -- Dhakshnamoorthy, Jothy -- Zofall, Martin -- Zhou, Ming -- Veenstra, Timothy -- Grewal, Shiv I S -- Intramural NIH HHS/ -- New York, N.Y. -- Science. 2011 Mar 25;331(6024):1624-7. doi: 10.1126/science.1198712.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Biochemistry and Molecular Biology, National Cancer Institute/NIH, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21436456" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Cycle Proteins/genetics/*metabolism ; Centromere/metabolism ; Euchromatin/metabolism ; Histones/metabolism ; Methylation ; Methyltransferases/genetics/*metabolism ; Mutation ; *RNA Interference ; RNA Processing, Post-Transcriptional ; RNA, Antisense/*metabolism ; RNA, Fungal/*metabolism ; RNA-Binding Proteins/metabolism ; Saccharomyces cerevisiae Proteins/metabolism ; Schizosaccharomyces/*genetics/*metabolism ; Schizosaccharomyces pombe Proteins/genetics/*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
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    A mutation in EGF repeat-8 of Notch discriminates between Serrate/Jagged and Delta family ligands (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-12-01
    Description: Notch signaling affects many developmental and cellular processes and has been implicated in congenital disorders, stroke, and numerous cancers. The Notch receptor binds its ligands Delta and Serrate and is able to discriminate between them in different contexts. However, the specific domains in Notch responsible for this selectivity are poorly defined. Through genetic screens in Drosophila, we isolated a mutation, Notch(jigsaw), that affects Serrate- but not Delta-dependent signaling. Notch(jigsaw) carries a missense mutation in epidermal growth factor repeat-8 (EGFr-8) and is defective in Serrate binding. A homologous point mutation in mammalian Notch2 also exhibits defects in signaling of a mammalian Serrate homolog, Jagged1. Hence, an evolutionarily conserved valine in EGFr-8 is essential for ligand selectivity and provides a molecular handle to study numerous Notch-dependent signaling events.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3663443/" 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/PMC3663443/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yamamoto, Shinya -- Charng, Wu-Lin -- Rana, Nadia A -- Kakuda, Shinako -- Jaiswal, Manish -- Bayat, Vafa -- Xiong, Bo -- Zhang, Ke -- Sandoval, Hector -- David, Gabriela -- Wang, Hao -- Haltiwanger, Robert S -- Bellen, Hugo J -- 1RC4GM096355-01/GM/NIGMS NIH HHS/ -- 5K12GM084897/GM/NIGMS NIH HHS/ -- 5P30HD024064/HD/NICHD NIH HHS/ -- 5R01GM061126-12/GM/NIGMS NIH HHS/ -- 5R01GM067858/GM/NIGMS NIH HHS/ -- 5T32-HD055200/HD/NICHD NIH HHS/ -- K12 GM084897/GM/NIGMS NIH HHS/ -- P30 HD024064/HD/NICHD NIH HHS/ -- R01 GM061126/GM/NIGMS NIH HHS/ -- R01 GM067858/GM/NIGMS NIH HHS/ -- RC4 GM096355/GM/NIGMS NIH HHS/ -- T32 HD055200/HD/NICHD NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2012 Nov 30;338(6111):1229-32. doi: 10.1126/science.1228745.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Program in Developmental Biology, Baylor College of Medicine, Houston, TX 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23197537" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Amino Acid Substitution ; Animals ; Calcium-Binding Proteins/*metabolism ; Cells, Cultured ; DNA Mutational Analysis ; Drosophila Proteins/*genetics/*metabolism ; Drosophila melanogaster/genetics/*metabolism ; Epidermal Growth Factor/genetics ; Evolution, Molecular ; Humans ; Intercellular Signaling Peptides and Proteins/*metabolism ; Intracellular Signaling Peptides and Proteins/*metabolism ; Ligands ; Male ; Membrane Proteins/*metabolism ; Methionine/genetics ; Molecular Sequence Data ; Mutation ; Receptor, Notch2/genetics/metabolism ; Receptors, Notch/*genetics/*metabolism ; Tandem Repeat Sequences/genetics ; Valine/genetics ; X Chromosome/genetics
    Print ISSN: 0036-8075
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  • 6
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    Accurate multiplex polony sequencing of an evolved bacterial genome (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-08-06
    Description: We describe a DNA sequencing technology in which a commonly available, inexpensive epifluorescence microscope is converted to rapid nonelectrophoretic DNA sequencing automation. We apply this technology to resequence an evolved strain of Escherichia coli at less than one error per million consensus bases. A cell-free, mate-paired library provided single DNA molecules that were amplified in parallel to 1-micrometer beads by emulsion polymerase chain reaction. Millions of beads were immobilized in a polyacrylamide gel and subjected to automated cycles of sequencing by ligation and four-color imaging. Cost per base was roughly one-ninth as much as that of conventional sequencing. Our protocols were implemented with off-the-shelf instrumentation and reagents.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shendure, Jay -- Porreca, Gregory J -- Reppas, Nikos B -- Lin, Xiaoxia -- McCutcheon, John P -- Rosenbaum, Abraham M -- Wang, Michael D -- Zhang, Kun -- Mitra, Robi D -- Church, George M -- New York, N.Y. -- Science. 2005 Sep 9;309(5741):1728-32. Epub 2005 Aug 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Harvard Medical School, Boston, MA 02115, USA. shendure@alumni.princeton.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16081699" target="_blank"〉PubMed〈/a〉
    Keywords: Acrylic Resins ; Algorithms ; Automation ; Costs and Cost Analysis ; DNA Ligases/metabolism ; DNA Primers ; DNA, Bacterial/*genetics ; Escherichia coli/*genetics ; *Evolution, Molecular ; Fluorescent Dyes ; Gels ; Gene Library ; *Genome, Bacterial ; Microscopy, Fluorescence ; Microspheres ; Mutation ; Nucleic Acid Hybridization ; Point Mutation ; Polymerase Chain Reaction ; Sequence Analysis, DNA/economics/instrumentation/*methods
    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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  • 7
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    Dopamine-mushroom body circuit regulates saliency-based decision-making in Drosophila (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-06-30
    Description: Drosophila melanogaster can make appropriate choices among alternative flight options on the basis of the relative salience of competing visual cues. We show that this choice behavior consists of early and late phases; the former requires activation of the dopaminergic system and mushroom bodies, whereas the latter is independent of these activities. Immunohistological analysis showed that mushroom bodies are densely innervated by dopaminergic axons. Thus, the circuit from the dopamine system to mushroom bodies is crucial for choice behavior in Drosophila.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Ke -- Guo, Jian Zeng -- Peng, Yueqing -- Xi, Wang -- Guo, Aike -- New York, N.Y. -- Science. 2007 Jun 29;316(5833):1901-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Neuroscience, Key Laboratory of Neurobiology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences (CAS), 320 Yueyang Road, Shanghai 200031, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17600217" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Genetically Modified ; Axons/*physiology ; Behavior, Animal ; *Choice Behavior ; Cues ; Dopamine/*physiology ; Drosophila melanogaster/genetics/*physiology ; Female ; Immunohistochemistry ; Models, Animal ; Mushroom Bodies/*innervation/*physiology ; Mutation ; Temperature ; Time Factors
    Print ISSN: 0036-8075
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  • 8
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    An antifungal agent inhibits an aminoacyl-tRNA synthetase by trapping tRNA in the editing site (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-06-26
    Description: Aminoacyl-transfer RNA (tRNA) synthetases, which catalyze the attachment of the correct amino acid to its corresponding tRNA during translation of the genetic code, are proven antimicrobial drug targets. We show that the broad-spectrum antifungal 5-fluoro-1,3-dihydro-1-hydroxy-2,1-benzoxaborole (AN2690), in development for the treatment of onychomycosis, inhibits yeast cytoplasmic leucyl-tRNA synthetase by formation of a stable tRNA(Leu)-AN2690 adduct in the editing site of the enzyme. Adduct formation is mediated through the boron atom of AN2690 and the 2'- and 3'-oxygen atoms of tRNA's3'-terminal adenosine. The trapping of enzyme-bound tRNA(Leu) in the editing site prevents catalytic turnover, thus inhibiting synthesis of leucyl-tRNA(Leu) and consequentially blocking protein synthesis. This result establishes the editing site as a bona fide target for aminoacyl-tRNA synthetase inhibitors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rock, Fernando L -- Mao, Weimin -- Yaremchuk, Anya -- Tukalo, Mikhail -- Crepin, Thibaut -- Zhou, Huchen -- Zhang, Yong-Kang -- Hernandez, Vincent -- Akama, Tsutomu -- Baker, Stephen J -- Plattner, Jacob J -- Shapiro, Lucy -- Martinis, Susan A -- Benkovic, Stephen J -- Cusack, Stephen -- Alley, M R K -- R01 DE16835/DE/NIDCR NIH HHS/ -- New York, N.Y. -- Science. 2007 Jun 22;316(5832):1759-61.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Anacor Pharmaceuticals, Incorporated, 1060 East Meadow Circle, Palo Alto, CA 94303, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17588934" target="_blank"〉PubMed〈/a〉
    Keywords: Antifungal Agents/chemistry/*pharmacology ; Bicyclo Compounds, Heterocyclic/chemistry/*pharmacology ; Boron/chemistry ; Boron Compounds/chemistry/*pharmacology ; Drug Resistance, Fungal/genetics ; Enzyme Inhibitors/chemistry/*pharmacology ; Leucine-tRNA Ligase/*antagonists & inhibitors/genetics/metabolism ; Mutation ; Protein Synthesis Inhibitors/chemistry/pharmacology ; *RNA Editing/drug effects ; RNA, Transfer, Leu/*antagonists & inhibitors/metabolism ; Saccharomyces cerevisiae/drug effects/enzymology/genetics
    Print ISSN: 0036-8075
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  • 9
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    Conservation and rewiring of functional modules revealed by an epistasis map in fission yeast (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-09-27
    Description: An epistasis map (E-MAP) was constructed in the fission yeast, Schizosaccharomyces pombe, by systematically measuring the phenotypes associated with pairs of mutations. This high-density, quantitative genetic interaction map focused on various aspects of chromosome function, including transcription regulation and DNA repair/replication. The E-MAP uncovered a previously unidentified component of the RNA interference (RNAi) machinery (rsh1) and linked the RNAi pathway to several other biological processes. Comparison of the S. pombe E-MAP to an analogous genetic map from the budding yeast revealed that, whereas negative interactions were conserved between genes involved in similar biological processes, positive interactions and overall genetic profiles between pairs of genes coding for physically associated proteins were even more conserved. Hence, conservation occurs at the level of the functional module (protein complex), but the genetic cross talk between modules can differ substantially.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2753251/" 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/PMC2753251/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roguev, Assen -- Bandyopadhyay, Sourav -- Zofall, Martin -- Zhang, Ke -- Fischer, Tamas -- Collins, Sean R -- Qu, Hongjing -- Shales, Michael -- Park, Han-Oh -- Hayles, Jacqueline -- Hoe, Kwang-Lae -- Kim, Dong-Uk -- Ideker, Trey -- Grewal, Shiv I -- Weissman, Jonathan S -- Krogan, Nevan J -- GM084279/GM/NIGMS NIH HHS/ -- R01 GM084279/GM/NIGMS NIH HHS/ -- R01 GM084279-01A1/GM/NIGMS NIH HHS/ -- R01 GM084279-02/GM/NIGMS NIH HHS/ -- R01 GM084279-02S1/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2008 Oct 17;322(5900):405-10. doi: 10.1126/science.1162609. Epub 2008 Sep 25.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cellular and Molecular Pharmacology, University of California, San Francisco, CA 94158, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18818364" target="_blank"〉PubMed〈/a〉
    Keywords: DNA Repair ; DNA Replication ; *Epistasis, Genetic ; Gene Expression Regulation, Fungal ; Gene Regulatory Networks ; *Genes, Fungal ; Histones/metabolism ; Mutation ; RNA Interference ; Saccharomyces cerevisiae/genetics/metabolism ; Schizosaccharomyces/*genetics/metabolism ; Schizosaccharomyces pombe Proteins/genetics/metabolism
    Print ISSN: 0036-8075
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  • 10
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    ER stress controls iron metabolism through induction of hepcidin (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-08-15
    Description: Hepcidin is a peptide hormone that is secreted by the liver and controls body iron homeostasis. Hepcidin overproduction causes anemia of inflammation, whereas its deficiency leads to hemochromatosis. Inflammation and iron are known extracellular stimuli for hepcidin expression. We found that endoplasmic reticulum (ER) stress also induces hepcidin expression and causes hypoferremia and spleen iron sequestration in mice. CREBH (cyclic AMP response element-binding protein H), an ER stress-activated transcription factor, binds to and transactivates the hepcidin promoter. Hepcidin induction in response to exogenously administered toxins or accumulation of unfolded protein in the ER is defective in CREBH knockout mice, indicating a role for CREBH in ER stress-regulated hepcidin expression. The regulation of hepcidin by ER stress links the intracellular response involved in protein quality control to innate immunity and iron homeostasis.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2923557/" 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/PMC2923557/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vecchi, Chiara -- Montosi, Giuliana -- Zhang, Kezhong -- Lamberti, Igor -- Duncan, Stephen A -- Kaufman, Randal J -- Pietrangelo, Antonello -- DK42394/DK/NIDDK NIH HHS/ -- HL52173/HL/NHLBI NIH HHS/ -- P01 HL057346/HL/NHLBI NIH HHS/ -- P01 HL057346-11A18575/HL/NHLBI NIH HHS/ -- P01 HL057346-128575/HL/NHLBI NIH HHS/ -- R01 HL052173/HL/NHLBI NIH HHS/ -- R01 HL052173-11/HL/NHLBI NIH HHS/ -- R01 HL052173-12/HL/NHLBI NIH HHS/ -- R01 HL052173-12W1/HL/NHLBI NIH HHS/ -- R01 HL052173-13/HL/NHLBI NIH HHS/ -- R03 MH089782/MH/NIMH NIH HHS/ -- R03 MH089782-02/MH/NIMH NIH HHS/ -- R37 DK042394/DK/NIDDK NIH HHS/ -- R37 DK042394-12/DK/NIDDK NIH HHS/ -- R37 DK042394-12S1/DK/NIDDK NIH HHS/ -- R37 DK042394-13/DK/NIDDK NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2009 Aug 14;325(5942):877-80. doi: 10.1126/science.1176639.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Hemochromatosis, Department of Internal Medicine, University Hospital Policlinico di Modena, Modena, Italy.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19679815" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Animals ; Antimicrobial Cationic Peptides/*genetics/*metabolism ; Cell Line, Tumor ; Cyclic AMP Response Element-Binding Protein/*metabolism ; Endoplasmic Reticulum/*physiology ; Hepcidins ; Homeostasis ; Humans ; Immunity, Innate ; Iron/blood/*metabolism ; Liver/metabolism ; Mice ; Mice, Knockout ; Mutation ; Promoter Regions, Genetic ; Protein Folding ; RNA Interference ; Spleen/metabolism ; *Stress, Physiological ; Transcriptional Activation
    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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