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  • Articles  (11)
  • Protein Structure, Tertiary
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  • Articles  (11)
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  • 1
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    Positioning of longitudinal nerves in C. elegans by nidogen (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-07
    Description: Basement membranes can help determine pathways of migrating axons. Although members of the nidogen (entactin) protein family are structural components of basement membranes, we find that nidogen is not required for basement membrane assembly in the nematode Caenorhabditis elegans. Nidogen is localized to body wall basement membranes and is required to direct longitudinal nerves dorsoventrally and to direct axons at the midlines. By examining migration of a single axon in vivo, we show that nidogen is required for the axon to switch from circumferential to longitudinal migration. Specialized basement membranes may thus regulate nerve position.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, S -- Wadsworth, W G -- New York, N.Y. -- Science. 2000 Apr 7;288(5463):150-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Robert Wood Johnson Medical School, Piscataway, NJ 08854-5635, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10753123" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Animals ; Animals, Genetically Modified ; Axons/*physiology ; Basement Membrane/*physiology ; Body Patterning ; Caenorhabditis elegans/anatomy & histology/embryology/genetics/*growth & ; development ; *Caenorhabditis elegans Proteins ; Cell Adhesion Molecules/genetics/physiology ; Cell Movement ; Cloning, Molecular ; Gene Expression ; Genes, Helminth ; In Situ Hybridization ; Intestines/cytology/metabolism ; Membrane Glycoproteins/analysis/chemistry/genetics/*physiology ; Motor Neurons/physiology/ultrastructure ; Muscles/metabolism ; Nervous System/anatomy & histology/embryology/growth & development/ultrastructure ; Neurons/metabolism ; Phenotype ; Protein Structure, Tertiary ; Receptors, Cell Surface/genetics/physiology ; Signal Transduction
    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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    HIFalpha targeted for VHL-mediated destruction by proline hydroxylation: implications for O2 sensing (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-09
    Description: HIF (hypoxia-inducible factor) is a transcription factor that plays a pivotal role in cellular adaptation to changes in oxygen availability. In the presence of oxygen, HIF is targeted for destruction by an E3 ubiquitin ligase containing the von Hippel-Lindau tumor suppressor protein (pVHL). We found that human pVHL binds to a short HIF-derived peptide when a conserved proline residue at the core of this peptide is hydroxylated. Because proline hydroxylation requires molecular oxygen and Fe(2+), this protein modification may play a key role in mammalian oxygen sensing.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ivan, M -- Kondo, K -- Yang, H -- Kim, W -- Valiando, J -- Ohh, M -- Salic, A -- Asara, J M -- Lane, W S -- Kaelin , W G Jr -- New York, N.Y. -- Science. 2001 Apr 20;292(5516):464-8. Epub 2001 Apr 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Dana-Farber Cancer Institute and Brigham and Women's Hospital, Howard Hughes Medical Institute, Harvard Medical School, 44 Binney Street, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11292862" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Basic Helix-Loop-Helix Transcription Factors ; Cell Hypoxia ; Cell Line ; Cobalt/pharmacology ; Deferoxamine/pharmacology ; Humans ; Hydroxylation ; Hydroxyproline/*metabolism ; *Ligases ; Mass Spectrometry ; Mice ; Molecular Sequence Data ; Oxygen/*physiology ; Protein Structure, Tertiary ; Proteins/*metabolism ; Recombinant Fusion Proteins/metabolism ; Trans-Activators/chemistry/genetics/*metabolism ; Transcription Factors/*metabolism ; Tumor Cells, Cultured ; *Tumor Suppressor Proteins ; *Ubiquitin-Protein Ligases ; Ubiquitins/metabolism ; Von Hippel-Lindau Tumor Suppressor Protein
    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 of an HIF-1alpha -pVHL complex: hydroxyproline recognition in signaling (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-05-11
    Description: The ubiquitination of the hypoxia-inducible factor (HIF) by the von Hippel-Lindau tumor suppressor (pVHL) plays a central role in the cellular response to changes in oxygen availability. pVHL binds to HIF only when a conserved proline in HIF is hydroxylated, a modification that is oxygen-dependent. The 1.85 angstrom structure of a 20-residue HIF-1alpha peptide-pVHL-ElonginB-ElonginC complex shows that HIF-1alpha binds to pVHL in an extended beta strand-like conformation. The hydroxyproline inserts into a gap in the pVHL hydrophobic core, at a site that is a hotspot for tumorigenic mutations, with its 4-hydroxyl group recognized by buried serine and histidine residues. Although the beta sheet-like interactions contribute to the stability of the complex, the hydroxyproline contacts are central to the strict specificity characteristic of signaling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Min, Jung-Hyun -- Yang, Haifeng -- Ivan, Mircea -- Gertler, Frank -- Kaelin, William G Jr -- Pavletich, Nikola P -- New York, N.Y. -- Science. 2002 Jun 7;296(5574):1886-9. Epub 2002 May 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cellular Biochemistry and Biophysics Program and Howard Hughes Medical Institute, Memorial Sloan-Kettering Cancer Center, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12004076" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Binding Sites ; Crystallography, X-Ray ; Humans ; Hydrogen Bonding ; Hydrophobic and Hydrophilic Interactions ; Hydroxylation ; Hydroxyproline/*metabolism ; Hypoxia-Inducible Factor 1, alpha Subunit ; Ligases/*chemistry/genetics/metabolism ; Macromolecular Substances ; Mice ; Models, Molecular ; Molecular Sequence Data ; Mutation ; Protein Conformation ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Signal Transduction ; Transcription Factors/*chemistry/metabolism ; *Tumor Suppressor Proteins ; *Ubiquitin-Protein Ligases ; Von Hippel-Lindau Tumor Suppressor Protein
    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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    Structure of the vesicular stomatitis virus nucleoprotein-RNA complex (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-06-17
    Description: Vesicular stomatitis virus is a negative-stranded RNA virus. Its nucleoprotein (N) binds the viral genomic RNA and is involved in multiple functions including transcription, replication, and assembly. We have determined a 2.9 angstrom structure of a complex containing 10 molecules of the N protein and 90 bases of RNA. The RNA is tightly sequestered in a cavity at the interface between two lobes of the N protein. This serves to protect the RNA in the absence of polynucleotide synthesis. For the RNA to be accessed, some conformational change in the N protein should be necessary.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Green, Todd J -- Zhang, Xin -- Wertz, Gail W -- Luo, Ming -- AI050066/AI/NIAID NIH HHS/ -- R37 AI012464/AI/NIAID NIH HHS/ -- R37 AI012464-28/AI/NIAID NIH HHS/ -- R37 AI012464-29/AI/NIAID NIH HHS/ -- R37 AI012464-30/AI/NIAID NIH HHS/ -- R37 AI012464-31/AI/NIAID NIH HHS/ -- R37AI012464/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2006 Jul 21;313(5785):357-60. Epub 2006 Jun 15.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology, School of Medicine, University of Alabama at Birmingham, 1025 18th Street South, Birmingham, AL 35294, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16778022" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Crystallography, X-Ray ; Hydrophobic and Hydrophilic Interactions ; Models, Molecular ; Molecular Sequence Data ; Nucleic Acid Conformation ; Nucleocapsid Proteins/*chemistry/metabolism ; Protein Conformation ; Protein Structure, Secondary ; Protein Structure, Tertiary ; RNA, Viral/*chemistry/metabolism ; Ribonucleoproteins/*chemistry ; Sequence Alignment ; Vesicular stomatitis Indiana virus/*chemistry
    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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    Oncogenic CARD11 mutations in human diffuse large B cell lymphoma (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-03-08
    Description: Diffuse large B cell lymphoma (DLBCL) is the most common form of non-Hodgkin's lymphoma. In the least curable (ABC) subtype of DLBCL, survival of the malignant cells is dependent on constitutive activation of the nuclear factor-kappaB (NF-kappaB) signaling pathway. In normal B cells, antigen receptor-induced NF-kappaB activation requires CARD11, a cytoplasmic scaffolding protein. To determine whether CARD11 contributes to tumorigenesis, we sequenced the CARD11 gene in human DLBCL tumors. We detected missense mutations in 7 of 73 ABC DLBCL biopsies (9.6%), all within exons encoding the coiled-coil domain. Experimental introduction of CARD11 coiled-coil domain mutants into lymphoma cell lines resulted in constitutive NF-kappaB activation and enhanced NF-kappaB activity upon antigen receptor stimulation. These results demonstrate that CARD11 is a bona fide oncogenein DLBCL, providing a genetic rationale for the development of pharmacological inhibitors of the CARD11 pathway for DLBCL therapy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lenz, Georg -- Davis, R Eric -- Ngo, Vu N -- Lam, Lloyd -- George, Thaddeus C -- Wright, George W -- Dave, Sandeep S -- Zhao, Hong -- Xu, Weihong -- Rosenwald, Andreas -- Ott, German -- Muller-Hermelink, Hans Konrad -- Gascoyne, Randy D -- Connors, Joseph M -- Rimsza, Lisa M -- Campo, Elias -- Jaffe, Elaine S -- Delabie, Jan -- Smeland, Erlend B -- Fisher, Richard I -- Chan, Wing C -- Staudt, Louis M -- UO1-CA84967/CA/NCI NIH HHS/ -- Intramural NIH HHS/ -- New York, N.Y. -- Science. 2008 Mar 21;319(5870):1676-9. doi: 10.1126/science.1153629. Epub 2008 Mar 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Metabolism Branch, Division of Cancer Treatment and Diagnosis, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18323416" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Apoptosis Regulatory Proteins/chemistry/*genetics/metabolism ; CARD Signaling Adaptor Proteins/chemistry/*genetics/metabolism ; Cell Line, Tumor ; Cytoplasm/metabolism ; Guanylate Cyclase/chemistry/*genetics/metabolism ; Humans ; I-kappa B Kinase/metabolism ; Jurkat Cells ; Lymphoma, Large B-Cell, Diffuse/*genetics ; Molecular Sequence Data ; *Mutation, Missense ; NF-kappa B ; *Oncogenes ; Protein Structure, Tertiary ; Receptors, Antigen, B-Cell/physiology ; Sequence Analysis, DNA
    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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    Chromosome organization by a nucleoid-associated protein in live bacteria (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-09-10
    Description: Bacterial chromosomes are confined in submicrometer-sized nucleoids. Chromosome organization is facilitated by nucleoid-associated proteins (NAPs), but the mechanisms of action remain elusive. In this work, we used super-resolution fluorescence microscopy, in combination with a chromosome-conformation capture assay, to study the distributions of major NAPs in live Escherichia coli cells. Four NAPs--HU, Fis, IHF, and StpA--were largely scattered throughout the nucleoid. In contrast, H-NS, a global transcriptional silencer, formed two compact clusters per chromosome, driven by oligomerization of DNA-bound H-NS through interactions mediated by the amino-terminal domain of the protein. H-NS sequestered the regulated operons into these clusters and juxtaposed numerous DNA segments broadly distributed throughout the chromosome. Deleting H-NS led to substantial chromosome reorganization. These observations demonstrate that H-NS plays a key role in global chromosome organization in bacteria.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3329943/" 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/PMC3329943/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Wenqin -- Li, Gene-Wei -- Chen, Chongyi -- Xie, X Sunney -- Zhuang, Xiaowei -- GM 096450/GM/NIGMS NIH HHS/ -- R01 GM096450/GM/NIGMS NIH HHS/ -- R01 GM096450-03/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2011 Sep 9;333(6048):1445-9. doi: 10.1126/science.1204697.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physics, Harvard University, Cambridge, MA 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21903814" target="_blank"〉PubMed〈/a〉
    Keywords: Binding Sites ; Cell Division ; Chromosomes, Bacterial/*metabolism/*ultrastructure ; DNA, Bacterial/chemistry/*metabolism ; DNA-Binding Proteins/metabolism ; Escherichia coli K12/genetics/metabolism/*ultrastructure ; Escherichia coli Proteins/chemistry/genetics/*metabolism ; Factor For Inversion Stimulation Protein/metabolism ; Fimbriae Proteins/chemistry/genetics/*metabolism ; Gene Expression Regulation, Bacterial ; Genetic Loci ; Genome, Bacterial ; Integration Host Factors/metabolism ; Molecular Chaperones/metabolism ; Nucleic Acid Conformation ; Operon ; Protein Multimerization ; Protein Structure, Tertiary ; Recombinant Fusion Proteins/metabolism ; Repressor Proteins/chemistry/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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  • 7
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    A Burkholderia pseudomallei toxin inhibits helicase activity of translation factor eIF4A (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-11-15
    Description: The structure of BPSL1549, a protein of unknown function from Burkholderia pseudomallei, reveals a similarity to Escherichia coli cytotoxic necrotizing factor 1. We found that BPSL1549 acted as a potent cytotoxin against eukaryotic cells and was lethal when administered to mice. Expression levels of bpsl1549 correlate with conditions expected to promote or suppress pathogenicity. BPSL1549 promotes deamidation of glutamine-339 of the translation initiation factor eIF4A, abolishing its helicase activity and inhibiting translation. We propose to name BPSL1549 Burkholderia lethal factor 1.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3364511/" 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/PMC3364511/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cruz-Migoni, Abimael -- Hautbergue, Guillaume M -- Artymiuk, Peter J -- Baker, Patrick J -- Bokori-Brown, Monika -- Chang, Chung-Te -- Dickman, Mark J -- Essex-Lopresti, Angela -- Harding, Sarah V -- Mahadi, Nor Muhammad -- Marshall, Laura E -- Mobbs, George W -- Mohamed, Rahmah -- Nathan, Sheila -- Ngugi, Sarah A -- Ong, Catherine -- Ooi, Wen Fong -- Partridge, Lynda J -- Phillips, Helen L -- Raih, M Firdaus -- Ruzheinikov, Sergei -- Sarkar-Tyson, Mitali -- Sedelnikova, Svetlana E -- Smither, Sophie J -- Tan, Patrick -- Titball, Richard W -- Wilson, Stuart A -- Rice, David W -- 085162/Wellcome Trust/United Kingdom -- BB/D011795/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- BB/D524975/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- BB/E025293/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- WT085162AIA/Wellcome Trust/United Kingdom -- Biotechnology and Biological Sciences Research Council/United Kingdom -- New York, N.Y. -- Science. 2011 Nov 11;334(6057):821-4. doi: 10.1126/science.1211915.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology and Biotechnology, Krebs Institute, University of Sheffield, Sheffield S10 2TN, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22076380" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Animals ; Bacterial Proteins/*chemistry/genetics/metabolism/*toxicity ; Bacterial Toxins/*chemistry/genetics/metabolism/*toxicity ; Burkholderia pseudomallei/*chemistry/*pathogenicity ; Catalytic Domain ; Cell Line ; Crystallography, X-Ray ; Cytotoxins/chemistry/genetics/metabolism/toxicity ; Escherichia coli Proteins/chemistry ; Eukaryotic Initiation Factor-4A/*antagonists & inhibitors/metabolism ; Glutamine/metabolism ; Humans ; Mice ; Mice, Inbred BALB C ; Models, Molecular ; Mutant Proteins/toxicity ; Peptide Chain Initiation, Translational/drug effects ; Protein Binding ; Protein Conformation ; 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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  • 8
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    Structure of a class C GPCR metabotropic glutamate receptor 1 bound to an allosteric modulator (2014)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2014-03-08
    Description: The excitatory neurotransmitter glutamate induces modulatory actions via the metabotropic glutamate receptors (mGlus), which are class C G protein-coupled receptors (GPCRs). We determined the structure of the human mGlu1 receptor seven-transmembrane (7TM) domain bound to a negative allosteric modulator, FITM, at a resolution of 2.8 angstroms. The modulator binding site partially overlaps with the orthosteric binding sites of class A GPCRs but is more restricted than most other GPCRs. We observed a parallel 7TM dimer mediated by cholesterols, which suggests that signaling initiated by glutamate's interaction with the extracellular domain might be mediated via 7TM interactions within the full-length receptor dimer. A combination of crystallography, structure-activity relationships, mutagenesis, and full-length dimer modeling provides insights about the allosteric modulation and activation mechanism of class C GPCRs.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3991565/" 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/PMC3991565/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wu, Huixian -- Wang, Chong -- Gregory, Karen J -- Han, Gye Won -- Cho, Hyekyung P -- Xia, Yan -- Niswender, Colleen M -- Katritch, Vsevolod -- Meiler, Jens -- Cherezov, Vadim -- Conn, P Jeffrey -- Stevens, Raymond C -- P50 GM073197/GM/NIGMS NIH HHS/ -- R01 DK097376/DK/NIDDK NIH HHS/ -- R01 GM080403/GM/NIGMS NIH HHS/ -- R01 GM099842/GM/NIGMS NIH HHS/ -- R01 MH062646/MH/NIMH NIH HHS/ -- R01 MH090192/MH/NIMH NIH HHS/ -- R01 NS031373/NS/NINDS NIH HHS/ -- R21 NS078262/NS/NINDS NIH HHS/ -- R37 NS031373/NS/NINDS NIH HHS/ -- U54 GM094618/GM/NIGMS NIH HHS/ -- Y1-CO-1020/CO/NCI NIH HHS/ -- Y1-GM-1104/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2014 Apr 4;344(6179):58-64. doi: 10.1126/science.1249489. Epub 2014 Mar 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Integrative Structural and Computational Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24603153" target="_blank"〉PubMed〈/a〉
    Keywords: Allosteric Regulation ; Allosteric Site ; Amino Acid Sequence ; Benzamides/*chemistry/*metabolism ; Binding Sites ; Cholesterol ; Crystallography, X-Ray ; Humans ; Hydrophobic and Hydrophilic Interactions ; Ligands ; Models, Molecular ; Molecular Sequence Data ; Mutation ; Protein Conformation ; Protein Multimerization ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Receptors, Metabotropic Glutamate/*chemistry/*metabolism ; Structure-Activity Relationship ; Thiazoles/*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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  • 9
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    Structure of the human smoothened receptor bound to an antitumour agent (2013)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2013-05-03
    Description: The smoothened (SMO) receptor, a key signal transducer in the hedgehog signalling pathway, is responsible for the maintenance of normal embryonic development and is implicated in carcinogenesis. It is classified as a class frizzled (class F) G-protein-coupled receptor (GPCR), although the canonical hedgehog signalling pathway involves the GLI transcription factors and the sequence similarity with class A GPCRs is less than 10%. Here we report the crystal structure of the transmembrane domain of the human SMO receptor bound to the small-molecule antagonist LY2940680 at 2.5 A resolution. Although the SMO receptor shares the seven-transmembrane helical fold, most of the conserved motifs for class A GPCRs are absent, and the structure reveals an unusually complex arrangement of long extracellular loops stabilized by four disulphide bonds. The ligand binds at the extracellular end of the seven-transmembrane-helix bundle and forms extensive contacts with the loops.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3657389/" 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/PMC3657389/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Chong -- Wu, Huixian -- Katritch, Vsevolod -- Han, Gye Won -- Huang, Xi-Ping -- Liu, Wei -- Siu, Fai Yiu -- Roth, Bryan L -- Cherezov, Vadim -- Stevens, Raymond C -- F32 DK088392/DK/NIDDK NIH HHS/ -- P50 GM073197/GM/NIGMS NIH HHS/ -- R01 DA017204/DA/NIDA NIH HHS/ -- R01 DA027170/DA/NIDA NIH HHS/ -- R01 DA27170/DA/NIDA NIH HHS/ -- R01 MH061887/MH/NIMH NIH HHS/ -- R01MH61887/MH/NIMH NIH HHS/ -- U19 MH082441/MH/NIMH NIH HHS/ -- U19 MH82441/MH/NIMH NIH HHS/ -- U54 GM094618/GM/NIGMS NIH HHS/ -- England -- Nature. 2013 May 16;497(7449):338-43. doi: 10.1038/nature12167. Epub 2013 May 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Integrative Structural and Computational Biology, The Scripps Research Institute, 10550 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/23636324" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Amino Acid Sequence ; Antineoplastic Agents/*chemistry/metabolism ; Binding Sites ; Crystallography, X-Ray ; Disulfides/chemistry ; Frizzled Receptors/chemistry/classification ; Humans ; Ligands ; Models, Molecular ; Molecular Sequence Data ; Phthalazines/*chemistry/metabolism ; Protein Structure, Tertiary ; Receptors, G-Protein-Coupled/*chemistry/classification/metabolism ; Structural Homology, Protein
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 10
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    Cas9 specifies functional viral targets during CRISPR-Cas adaptation (2015)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2015-02-25
    Description: Clustered regularly interspaced short palindromic repeat (CRISPR) loci and their associated (Cas) proteins provide adaptive immunity against viral infection in prokaryotes. Upon infection, short phage sequences known as spacers integrate between CRISPR repeats and are transcribed into small RNA molecules that guide the Cas9 nuclease to the viral targets (protospacers). Streptococcus pyogenes Cas9 cleavage of the viral genome requires the presence of a 5'-NGG-3' protospacer adjacent motif (PAM) sequence immediately downstream of the viral target. It is not known whether and how viral sequences flanked by the correct PAM are chosen as new spacers. Here we show that Cas9 selects functional spacers by recognizing their PAM during spacer acquisition. The replacement of cas9 with alleles that lack the PAM recognition motif or recognize an NGGNG PAM eliminated or changed PAM specificity during spacer acquisition, respectively. Cas9 associates with other proteins of the acquisition machinery (Cas1, Cas2 and Csn2), presumably to provide PAM-specificity to this process. These results establish a new function for Cas9 in the genesis of prokaryotic immunological memory.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4385744/" 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/PMC4385744/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Heler, Robert -- Samai, Poulami -- Modell, Joshua W -- Weiner, Catherine -- Goldberg, Gregory W -- Bikard, David -- Marraffini, Luciano A -- 1DP2AI104556-01/AI/NIAID NIH HHS/ -- DP2 AI104556/AI/NIAID NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Mar 12;519(7542):199-202. doi: 10.1038/nature14245. Epub 2015 Feb 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Bacteriology, The Rockefeller University, 1230 York Avenue, New York, New York 10065, USA. ; 1] Laboratory of Bacteriology, The Rockefeller University, 1230 York Avenue, New York, New York 10065, USA [2] Synthetic Biology Group, Institut Pasteur, 28 Rue du Dr. Roux, 75015 Paris, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25707807" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; CRISPR-Associated Proteins/*metabolism ; *CRISPR-Cas Systems/immunology ; Clustered Regularly Interspaced Short Palindromic Repeats/*genetics/immunology ; DNA, Viral/*genetics/immunology/metabolism ; Molecular Sequence Data ; Nucleotide Motifs ; Protein Binding ; Protein Structure, Tertiary ; Staphylococcus aureus ; Streptococcus pyogenes/*enzymology/*genetics/immunology/virology ; Substrate Specificity
    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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