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  • Protein Structure, Tertiary  (40)
  • 2010-2014
  • 2005-2009  (40)
  • 1995-1999
  • 2009  (40)
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  • 2010-2014
  • 2005-2009  (40)
  • 1995-1999
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  • 1
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    Structural basis of transcription: backtracked RNA polymerase II at 3.4 angstrom resolution (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-05-30
    Description: Transcribing RNA polymerases oscillate between three stable states, two of which, pre- and posttranslocated, were previously subjected to x-ray crystal structure determination. We report here the crystal structure of RNA polymerase II in the third state, the reverse translocated, or "backtracked" state. The defining feature of the backtracked structure is a binding site for the first backtracked nucleotide. This binding site is occupied in case of nucleotide misincorporation in the RNA or damage to the DNA, and is termed the "P" site because it supports proofreading. The predominant mechanism of proofreading is the excision of a dinucleotide in the presence of the elongation factor SII (TFIIS). Structure determination of a cocrystal with TFIIS reveals a rearrangement whereby cleavage of the RNA may take place.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2718261/" 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/PMC2718261/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Dong -- Bushnell, David A -- Huang, Xuhui -- Westover, Kenneth D -- Levitt, Michael -- Kornberg, Roger D -- GM036559/GM/NIGMS NIH HHS/ -- GM041455/GM/NIGMS NIH HHS/ -- GM049985/GM/NIGMS NIH HHS/ -- K99 GM085136/GM/NIGMS NIH HHS/ -- K99 GM085136-01/GM/NIGMS NIH HHS/ -- R00 GM085136/GM/NIGMS NIH HHS/ -- R01 GM036659/GM/NIGMS NIH HHS/ -- R01 GM041455/GM/NIGMS NIH HHS/ -- R01 GM049985/GM/NIGMS NIH HHS/ -- R01 GM049985-16/GM/NIGMS NIH HHS/ -- R37 GM036659/GM/NIGMS NIH HHS/ -- R37 GM036659-22/GM/NIGMS NIH HHS/ -- R37 GM041455/GM/NIGMS NIH HHS/ -- R37 GM041455-20/GM/NIGMS NIH HHS/ -- U54 GM072970/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2009 May 29;324(5931):1203-6. doi: 10.1126/science.1168729.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Structural Biology, Stanford University School of Medicine, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19478184" target="_blank"〉PubMed〈/a〉
    Keywords: Base Pair Mismatch ; Crystallography, X-Ray ; Guanosine Monophosphate/chemistry/metabolism ; Models, Molecular ; Nucleic Acid Conformation ; Oligoribonucleotides/chemistry/*metabolism ; Protein Conformation ; Protein Structure, Secondary ; Protein Structure, Tertiary ; RNA/chemistry/*metabolism ; RNA Polymerase II/*chemistry/*metabolism ; Saccharomyces cerevisiae/*enzymology ; *Transcription, Genetic ; Transcriptional Elongation Factors/chemistry/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
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    Solution nuclear magnetic resonance structure of membrane-integral diacylglycerol kinase (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-06-27
    Description: Escherichia coli diacylglycerol kinase (DAGK) represents a family of integral membrane enzymes that is unrelated to all other phosphotransferases. We have determined the three-dimensional structure of the DAGK homotrimer with the use of solution nuclear magnetic resonance. The third transmembrane helix from each subunit is domain-swapped with the first and second transmembrane segments from an adjacent subunit. Each of DAGK's three active sites resembles a portico. The cornice of the portico appears to be the determinant of DAGK's lipid substrate specificity and overhangs the site of phosphoryl transfer near the water-membrane interface. Mutations to cysteine that caused severe misfolding were located in or near the active site, indicating a high degree of overlap between sites responsible for folding and for catalysis.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2764269/" 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/PMC2764269/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Van Horn, Wade D -- Kim, Hak-Jun -- Ellis, Charles D -- Hadziselimovic, Arina -- Sulistijo, Endah S -- Karra, Murthy D -- Tian, Changlin -- Sonnichsen, Frank D -- Sanders, Charles R -- R01 GM047485/GM/NIGMS NIH HHS/ -- R01 GM047485-17/GM/NIGMS NIH HHS/ -- R01 GM47485/GM/NIGMS NIH HHS/ -- T32 NS007491/NS/NINDS NIH HHS/ -- T32 NS007491-09/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2009 Jun 26;324(5935):1726-9. doi: 10.1126/science.1171716.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Center for Structural Biology, Vanderbilt University, Nashville, TN 37232, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19556511" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Amino Acid Sequence ; Biocatalysis ; Catalytic Domain ; Cell Membrane/enzymology ; Diacylglycerol Kinase/*chemistry/metabolism ; Escherichia coli/*enzymology ; Escherichia coli Proteins/*chemistry/metabolism ; Models, Molecular ; Molecular Sequence Data ; Nuclear Magnetic Resonance, Biomolecular ; Protein Conformation ; Protein Folding ; Protein Multimerization ; Protein Structure, Quaternary ; Protein Structure, Secondary ; Protein Structure, Tertiary
    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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  • 3
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    Structure and hydration of membranes embedded with voltage-sensing domains (2009)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2009-11-27
    Description: Despite the growing number of atomic-resolution membrane protein structures, direct structural information about proteins in their native membrane environment is scarce. This problem is particularly relevant in the case of the highly charged S1-S4 voltage-sensing domains responsible for nerve impulses, where interactions with the lipid bilayer are critical for the function of voltage-activated ion channels. Here we use neutron diffraction, solid-state nuclear magnetic resonance (NMR) spectroscopy and molecular dynamics simulations to investigate the structure and hydration of bilayer membranes containing S1-S4 voltage-sensing domains. Our results show that voltage sensors adopt transmembrane orientations and cause a modest reshaping of the surrounding lipid bilayer, and that water molecules intimately interact with the protein within the membrane. These structural findings indicate that voltage sensors have evolved to interact with the lipid membrane while keeping energetic and structural perturbations to a minimum, and that water penetrates the membrane, to hydrate charged residues and shape the transmembrane electric field.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2784928/" 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/PMC2784928/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Krepkiy, Dmitriy -- Mihailescu, Mihaela -- Freites, J Alfredo -- Schow, Eric V -- Worcester, David L -- Gawrisch, Klaus -- Tobias, Douglas J -- White, Stephen H -- Swartz, Kenton J -- GM74737/GM/NIGMS NIH HHS/ -- GM86685/GM/NIGMS NIH HHS/ -- P01 GM086685/GM/NIGMS NIH HHS/ -- R01 GM074637/GM/NIGMS NIH HHS/ -- R01 RR014812/RR/NCRR NIH HHS/ -- ZIA NS002945-13/Intramural NIH HHS/ -- England -- Nature. 2009 Nov 26;462(7272):473-9. doi: 10.1038/nature08542.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Physiology and Biophysics Section, Porter Neuroscience Research Center, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19940918" target="_blank"〉PubMed〈/a〉
    Keywords: Archaeal Proteins/chemistry/metabolism ; Circular Dichroism ; Lipid Bilayers/*chemistry/*metabolism ; Membrane Lipids/analysis/chemistry/metabolism ; *Membrane Potentials ; Models, Molecular ; Molecular Dynamics Simulation ; Neutron Diffraction ; Nuclear Magnetic Resonance, Biomolecular ; Potassium Channels, Voltage-Gated/*chemistry/metabolism ; Protein Structure, Tertiary ; Spectrometry, Fluorescence ; Water/*analysis/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 4
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    A phylogeny-driven genomic encyclopaedia of Bacteria and Archaea (2009)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2009-12-25
    Description: Sequencing of bacterial and archaeal genomes has revolutionized our understanding of the many roles played by microorganisms. There are now nearly 1,000 completed bacterial and archaeal genomes available, most of which were chosen for sequencing on the basis of their physiology. As a result, the perspective provided by the currently available genomes is limited by a highly biased phylogenetic distribution. To explore the value added by choosing microbial genomes for sequencing on the basis of their evolutionary relationships, we have sequenced and analysed the genomes of 56 culturable species of Bacteria and Archaea selected to maximize phylogenetic coverage. Analysis of these genomes demonstrated pronounced benefits (compared to an equivalent set of genomes randomly selected from the existing database) in diverse areas including the reconstruction of phylogenetic history, the discovery of new protein families and biological properties, and the prediction of functions for known genes from other organisms. Our results strongly support the need for systematic 'phylogenomic' efforts to compile a phylogeny-driven 'Genomic Encyclopedia of Bacteria and Archaea' in order to derive maximum knowledge from existing microbial genome data as well as from genome sequences to come.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3073058/" 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/PMC3073058/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wu, Dongying -- Hugenholtz, Philip -- Mavromatis, Konstantinos -- Pukall, Rudiger -- Dalin, Eileen -- Ivanova, Natalia N -- Kunin, Victor -- Goodwin, Lynne -- Wu, Martin -- Tindall, Brian J -- Hooper, Sean D -- Pati, Amrita -- Lykidis, Athanasios -- Spring, Stefan -- Anderson, Iain J -- D'haeseleer, Patrik -- Zemla, Adam -- Singer, Mitchell -- Lapidus, Alla -- Nolan, Matt -- Copeland, Alex -- Han, Cliff -- Chen, Feng -- Cheng, Jan-Fang -- Lucas, Susan -- Kerfeld, Cheryl -- Lang, Elke -- Gronow, Sabine -- Chain, Patrick -- Bruce, David -- Rubin, Edward M -- Kyrpides, Nikos C -- Klenk, Hans-Peter -- Eisen, Jonathan A -- R01 GM054592-09/GM/NIGMS NIH HHS/ -- R01 GM067012-04/GM/NIGMS NIH HHS/ -- England -- Nature. 2009 Dec 24;462(7276):1056-60. doi: 10.1038/nature08656.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉DOE Joint Genome Institute, Walnut Creek, California 94598, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20033048" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/chemistry ; Amino Acid Sequence ; Archaea/*classification/*genetics ; Bacteria/*classification/*genetics ; Bacterial Proteins/chemistry ; Biodiversity ; Databases, Genetic ; Genes, rRNA/genetics ; Genome, Archaeal/*genetics ; Genome, Bacterial/*genetics ; Models, Molecular ; Molecular Sequence Data ; *Phylogeny ; Protein Structure, Tertiary ; Sequence Alignment
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 5
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    Structure of an RNA polymerase II-TFIIB complex and the transcription initiation mechanism (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-12-08
    Description: Previous x-ray crystal structures have given insight into the mechanism of transcription and the role of general transcription factors in the initiation of the process. A structure of an RNA polymerase II-general transcription factor TFIIB complex at 4.5 angstrom resolution revealed the amino-terminal region of TFIIB, including a loop termed the "B finger," reaching into the active center of the polymerase where it may interact with both DNA and RNA, but this structure showed little of the carboxyl-terminal region. A new crystal structure of the same complex at 3.8 angstrom resolution obtained under different solution conditions is complementary with the previous one, revealing the carboxyl-terminal region of TFIIB, located above the polymerase active center cleft, but showing none of the B finger. In the new structure, the linker between the amino- and carboxyl-terminal regions can also be seen, snaking down from above the cleft toward the active center. The two structures, taken together with others previously obtained, dispel long-standing mysteries of the transcription initiation process.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2813267/" 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/PMC2813267/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Liu, Xin -- Bushnell, David A -- Wang, Dong -- Calero, Guillermo -- Kornberg, Roger D -- AI21144/AI/NIAID NIH HHS/ -- GM049985/GM/NIGMS NIH HHS/ -- K99 GM085136/GM/NIGMS NIH HHS/ -- K99 GM085136-02/GM/NIGMS NIH HHS/ -- R00 GM085136/GM/NIGMS NIH HHS/ -- R01 AI021144/AI/NIAID NIH HHS/ -- R01 AI021144-25/AI/NIAID NIH HHS/ -- R01 GM036659/GM/NIGMS NIH HHS/ -- R01 GM049985/GM/NIGMS NIH HHS/ -- R01 GM049985-16/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2010 Jan 8;327(5962):206-9. doi: 10.1126/science.1182015. Epub 2009 Nov 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Structural Biology, Stanford University School of Medicine, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965383" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Catalytic Domain ; Crystallography, X-Ray ; Models, Molecular ; Molecular Sequence Data ; Protein Conformation ; Protein Interaction Domains and Motifs ; Protein Structure, Secondary ; Protein Structure, Tertiary ; RNA Polymerase II/*chemistry/*metabolism ; Repetitive Sequences, Amino Acid ; Saccharomyces cerevisiae/chemistry/genetics/metabolism ; Saccharomyces cerevisiae Proteins/*chemistry/*metabolism ; Transcription Factor TFIIB/*chemistry/*metabolism ; *Transcription, Genetic
    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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  • 6
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    ErbB2 resembles an autoinhibited invertebrate epidermal growth factor receptor (2009)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2009-09-01
    Description: The orphan receptor tyrosine kinase ErbB2 (also known as HER2 or Neu) transforms cells when overexpressed, and it is an important therapeutic target in human cancer. Structural studies have suggested that the oncogenic (and ligand-independent) signalling properties of ErbB2 result from the absence of a key intramolecular 'tether' in the extracellular region that autoinhibits other human ErbB receptors, including the epidermal growth factor (EGF) receptor. Although ErbB2 is unique among the four human ErbB receptors, here we show that it is the closest structural relative of the single EGF receptor family member in Drosophila melanogaster (dEGFR). Genetic and biochemical data show that dEGFR is tightly regulated by growth factor ligands, yet a crystal structure shows that it, too, lacks the intramolecular tether seen in human EGFR, ErbB3 and ErbB4. Instead, a distinct set of autoinhibitory interdomain interactions hold unliganded dEGFR in an inactive state. All of these interactions are maintained (and even extended) in ErbB2, arguing against the suggestion that ErbB2 lacks autoinhibition. We therefore suggest that normal and pathogenic ErbB2 signalling may be regulated by ligands in the same way as dEGFR. Our findings have important implications for ErbB2 regulation in human cancer, and for developing therapeutic approaches that target novel aspects of this orphan receptor.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2762480/" 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/PMC2762480/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alvarado, Diego -- Klein, Daryl E -- Lemmon, Mark A -- R01 CA079992/CA/NCI NIH HHS/ -- R01 CA079992-09/CA/NCI NIH HHS/ -- R01 CA079992-10/CA/NCI NIH HHS/ -- R01 CA125432/CA/NCI NIH HHS/ -- R01 CA125432-01A1/CA/NCI NIH HHS/ -- R01 CA125432-02/CA/NCI NIH HHS/ -- R01 CA125432-03/CA/NCI NIH HHS/ -- England -- Nature. 2009 Sep 10;461(7261):287-91. doi: 10.1038/nature08297. Epub 2009 Aug 30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Biophysics, University of Pennsylvania School of Medicine, 809C Stellar-Chance Laboratories, 422 Curie Boulevard, Philadelphia, Pennsylvania 19104-6059, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19718021" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Crystallography, X-Ray ; Drosophila Proteins/*antagonists & inhibitors/chemistry/genetics/*metabolism ; Drosophila melanogaster/chemistry/*metabolism ; Enzyme Activation ; Humans ; Ligands ; Models, Molecular ; Protein Structure, Tertiary ; Receptor, Epidermal Growth Factor/*antagonists & ; inhibitors/chemistry/genetics/*metabolism ; Receptor, ErbB-2/antagonists & inhibitors/*chemistry/*metabolism ; Receptors, Invertebrate Peptide/*antagonists & ; inhibitors/chemistry/genetics/*metabolism ; Scattering, Small Angle ; Solubility ; X-Ray Diffraction
    Print ISSN: 0028-0836
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 7
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    Diversity and complexity in DNA recognition by transcription factors (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-05-16
    Description: Sequence preferences of DNA binding proteins are a primary mechanism by which cells interpret the genome. Despite the central importance of these proteins in physiology, development, and evolution, comprehensive DNA binding specificities have been determined experimentally for only a few proteins. Here, we used microarrays containing all 10-base pair sequences to examine the binding specificities of 104 distinct mouse DNA binding proteins representing 22 structural classes. Our results reveal a complex landscape of binding, with virtually every protein analyzed possessing unique preferences. Roughly half of the proteins each recognized multiple distinctly different sequence motifs, challenging our molecular understanding of how proteins interact with their DNA binding sites. This complexity in DNA recognition may be important in gene regulation and in the evolution of transcriptional regulatory networks.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2905877/" 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/PMC2905877/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Badis, Gwenael -- Berger, Michael F -- Philippakis, Anthony A -- Talukder, Shaheynoor -- Gehrke, Andrew R -- Jaeger, Savina A -- Chan, Esther T -- Metzler, Genita -- Vedenko, Anastasia -- Chen, Xiaoyu -- Kuznetsov, Hanna -- Wang, Chi-Fong -- Coburn, David -- Newburger, Daniel E -- Morris, Quaid -- Hughes, Timothy R -- Bulyk, Martha L -- R01 HG003985/HG/NHGRI NIH HHS/ -- R01 HG003985-01/HG/NHGRI NIH HHS/ -- R01 HG003985-02/HG/NHGRI NIH HHS/ -- R01 HG003985-03/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2009 Jun 26;324(5935):1720-3. doi: 10.1126/science.1162327. Epub 2009 May 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Banting and Best Department of Medical Research, University of Toronto, Toronto, ON M5S 3E1, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19443739" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Amino Acid Sequence ; Animals ; Base Sequence ; Binding Sites ; DNA/chemistry/*metabolism ; Electrophoretic Mobility Shift Assay ; Gene Expression Regulation ; Gene Regulatory Networks ; Humans ; Mice ; Protein Array Analysis ; Protein Binding ; Protein Structure, Tertiary ; Recombinant Fusion Proteins/chemistry/metabolism ; Transcription Factors/*chemistry/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    Global analysis of Cdk1 substrate phosphorylation sites provides insights into evolution (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-09-26
    Description: To explore the mechanisms and evolution of cell-cycle control, we analyzed the position and conservation of large numbers of phosphorylation sites for the cyclin-dependent kinase Cdk1 in the budding yeast Saccharomyces cerevisiae. We combined specific chemical inhibition of Cdk1 with quantitative mass spectrometry to identify the positions of 547 phosphorylation sites on 308 Cdk1 substrates in vivo. Comparisons of these substrates with orthologs throughout the ascomycete lineage revealed that the position of most phosphorylation sites is not conserved in evolution; instead, clusters of sites shift position in rapidly evolving disordered regions. We propose that the regulation of protein function by phosphorylation often depends on simple nonspecific mechanisms that disrupt or enhance protein-protein interactions. The gain or loss of phosphorylation sites in rapidly evolving regions could facilitate the evolution of kinase-signaling circuits.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2813701/" 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/PMC2813701/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holt, Liam J -- Tuch, Brian B -- Villen, Judit -- Johnson, Alexander D -- Gygi, Steven P -- Morgan, David O -- GM037049/GM/NIGMS NIH HHS/ -- GM50684/GM/NIGMS NIH HHS/ -- HG3456/HG/NHGRI NIH HHS/ -- R01 GM069901/GM/NIGMS NIH HHS/ -- R01 GM069901-06/GM/NIGMS NIH HHS/ -- R01 HG003456/HG/NHGRI NIH HHS/ -- R01 HG003456-06/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2009 Sep 25;325(5948):1682-6. doi: 10.1126/science.1172867.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departments of Physiology and Biochemistry and Biophysics, University of California, San Francisco, San Francisco, CA 94158, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19779198" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Amino Acid Sequence ; Ascomycota/chemistry/genetics/metabolism ; *Biological Evolution ; CDC2 Protein Kinase/antagonists & inhibitors/*metabolism ; *Cell Cycle ; Cell Physiological Processes ; Computational Biology ; *Evolution, Molecular ; Molecular Sequence Data ; Phosphopeptides/chemistry/*metabolism ; Phosphorylation ; Phylogeny ; Protein Conformation ; Protein Structure, Tertiary ; Saccharomyces cerevisiae/chemistry/genetics/metabolism ; Saccharomyces cerevisiae Proteins/chemistry/*metabolism ; *Signal Transduction ; Substrate Specificity
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Structure of the LKB1-STRAD-MO25 complex reveals an allosteric mechanism of kinase activation (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-11-07
    Description: The LKB1 tumor suppressor is a protein kinase that controls the activity of adenosine monophosphate-activated protein kinase (AMPK). LKB1 activity is regulated by the pseudokinase STRADalpha and the scaffolding protein MO25alpha through an unknown, phosphorylation-independent, mechanism. We describe the structure of the core heterotrimeric LKB1-STRADalpha-MO25alpha complex, revealing an unusual allosteric mechanism of LKB1 activation. STRADalpha adopts a closed conformation typical of active protein kinases and binds LKB1 as a pseudosubstrate. STRADalpha and MO25alpha promote the active conformation of LKB1, which is stabilized by MO25alpha interacting with the LKB1 activation loop. This previously undescribed mechanism of kinase activation may be relevant to understanding the evolution of other pseudokinases. The structure also reveals how mutations found in Peutz-Jeghers syndrome and in various sporadic cancers impair LKB1 function.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3518268/" 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/PMC3518268/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zeqiraj, Elton -- Filippi, Beatrice Maria -- Deak, Maria -- Alessi, Dario R -- van Aalten, Daan M F -- 087590/Wellcome Trust/United Kingdom -- C33794/A10969/Cancer Research UK/United Kingdom -- G0900138/Medical Research Council/United Kingdom -- MC_U127070193/Medical Research Council/United Kingdom -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2009 Dec 18;326(5960):1707-11. doi: 10.1126/science.1178377. Epub 2009 Nov 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Molecular Microbiology, College of Life Sciences, University of Dundee, Dundee DD1 5EH, Scotland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19892943" target="_blank"〉PubMed〈/a〉
    Keywords: AMP-Activated Protein Kinases/metabolism ; Adaptor Proteins, Vesicular Transport/*chemistry/metabolism ; Allosteric Regulation ; Amino Acid Sequence ; Binding Sites ; Calcium-Binding Proteins/*chemistry/metabolism ; Crystallography, X-Ray ; Enzyme Activation ; Humans ; Models, Molecular ; Molecular Sequence Data ; Multiprotein Complexes/chemistry/metabolism ; Mutant Proteins/chemistry/metabolism ; Mutation ; Phosphorylation ; Protein Binding ; Protein Conformation ; Protein Interaction Domains and Motifs ; Protein Structure, Tertiary ; Protein-Serine-Threonine Kinases/*chemistry/metabolism
    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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    The orphan G protein-coupled receptor 3 modulates amyloid-beta peptide generation in neurons (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-02-14
    Description: Deposition of the amyloid-beta peptide is a pathological hallmark of Alzheimer's disease. A high-throughput functional genomics screen identified G protein-coupled receptor 3 (GPR3), a constitutively active orphan G protein-coupled receptor, as a modulator of amyloid-beta production. Overexpression of GPR3 stimulated amyloid-beta production, whereas genetic ablation of GPR3 prevented accumulation of the amyloid-beta peptide in vitro and in an Alzheimer's disease mouse model. GPR3 expression led to increased formation and cell-surface localization of the mature gamma-secretase complex in the absence of an effect on Notch processing. GPR3 is highly expressed in areas of the normal human brain implicated in Alzheimer's disease and is elevated in the sporadic Alzheimer's disease brain. Thus, GPR3 represents a potential therapeutic target for the treatment of Alzheimer's disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thathiah, Amantha -- Spittaels, Kurt -- Hoffmann, Marcel -- Staes, Mik -- Cohen, Adrian -- Horre, Katrien -- Vanbrabant, Mieke -- Coun, Frea -- Baekelandt, Veerle -- Delacourte, Andre -- Fischer, David F -- Pollet, Dirk -- De Strooper, Bart -- Merchiers, Pascal -- New York, N.Y. -- Science. 2009 Feb 13;323(5916):946-51. doi: 10.1126/science.1160649.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Developmental Genetics, Vlaams Institute for Biotechnology, Center for Human Genetics, Catholic University of Leuven, Herestraat 49, 3000 Leuven, Belgium.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19213921" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Aged ; Amyloid Precursor Protein Secretases/metabolism ; Amyloid beta-Peptides/*biosynthesis ; Animals ; Cell Line ; Cell Line, Tumor ; Cells, Cultured ; Female ; Humans ; Male ; Mice ; Middle Aged ; Neurons/*metabolism ; Protein Structure, Tertiary ; Receptors, G-Protein-Coupled/*metabolism ; Receptors, Notch/metabolism ; Signal Transduction
    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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