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  • Protein Conformation  (310)
  • American Association for the Advancement of Science (AAAS)  (310)
  • American Physical Society
  • American Society of Hematology
  • Blackwell Publishing Ltd
  • Nature Publishing Group
  • 2005-2009  (270)
  • 1980-1984  (40)
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  • American Association for the Advancement of Science (AAAS)  (310)
  • American Physical Society
  • American Society of Hematology
  • Blackwell Publishing Ltd
  • Nature Publishing Group
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  • 1
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2006-03-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Craik, David J -- New York, N.Y. -- Science. 2006 Mar 17;311(5767):1563-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Molecular Bioscience, University of Queensland, Brisbane, Queensland 4072, Australia. d.craik@imb.uq.edu.au〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16543448" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anti-HIV Agents/chemistry/pharmacology ; Anti-Infective Agents/chemistry/pharmacology ; Bacterial Proteins/biosynthesis/chemistry/pharmacology ; Codon, Terminator ; Cyclization ; Cyclotides/biosynthesis/*chemistry/pharmacology ; Defensins/biosynthesis/chemistry/genetics/pharmacology ; Drug Design ; Humans ; Peptides, Cyclic/biosynthesis/*chemistry ; Plant Proteins/biosynthesis/chemistry/pharmacology ; Protein Biosynthesis ; Protein Conformation ; Protein Denaturation ; Protein Engineering ; Protein Folding ; Protein Precursors/metabolism ; Proteins/*chemistry/metabolism/pharmacology
    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
    Publication Date: 2006-04-15
    Description: Advances in molecular biology, organic chemistry, and materials science have recently created several new classes of fluorescent probes for imaging in cell biology. Here we review the characteristic benefits and limitations of fluorescent probes to study proteins. The focus is on protein detection in live versus fixed cells: determination of protein expression, localization, activity state, and the possibility for combination of fluorescent light microscopy with electron microscopy. Small organic fluorescent dyes, nanocrystals ("quantum dots"), autofluorescent proteins, small genetic encoded tags that can be complexed with fluorochromes, and combinations of these probes are highlighted.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Giepmans, Ben N G -- Adams, Stephen R -- Ellisman, Mark H -- Tsien, Roger Y -- GM 72033/GM/NIGMS NIH HHS/ -- NS27177/NS/NINDS NIH HHS/ -- RR04050/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2006 Apr 14;312(5771):217-24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Center for Microscopy and Imaging Research, Center for Research in Biological Systems, Department of Neurosciences, University of California, San Diego, La Jolla, CA 92093, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16614209" target="_blank"〉PubMed〈/a〉
    Keywords: Diffusion ; Enzymes/metabolism ; Fluorescence ; Fluorescence Resonance Energy Transfer ; Fluorescent Antibody Technique ; *Fluorescent Dyes/chemistry ; Genetic Techniques ; Immunohistochemistry ; *Luminescent Proteins/chemistry/genetics ; Microscopy, Electron ; *Molecular Probe Techniques ; Protein Conformation ; Protein Transport ; Proteins/*analysis/chemistry/metabolism/*physiology ; *Quantum Dots
    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
    Publication Date: 2006-06-10
    Description: Bacterial pathogens frequently use protein secretion to mediate interactions with their hosts. Here we found that a virulence locus (HSI-I) of Pseudomonas aeruginosa encodes a protein secretion apparatus. The apparatus assembled in discrete subcellular locations and exported Hcp1, a hexameric protein that forms rings with a 40 angstrom internal diameter. Regulatory patterns of HSI-I suggested that the apparatus functions during chronic infections. We detected Hcp1 in pulmonary secretions of cystic fibrosis (CF) patients and Hcp1-specific antibodies in their sera. Thus, HSI-I likely contributes to the pathogenesis of P. aeruginosa in CF patients. HSI-I-related loci are widely distributed among bacterial pathogens and may play a general role in mediating host interactions.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2800167/" 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/PMC2800167/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mougous, Joseph D -- Cuff, Marianne E -- Raunser, Stefan -- Shen, Aimee -- Zhou, Min -- Gifford, Casey A -- Goodman, Andrew L -- Joachimiak, Grazyna -- Ordonez, Claudia L -- Lory, Stephen -- Walz, Thomas -- Joachimiak, Andrzej -- Mekalanos, John J -- AI21451/AI/NIAID NIH HHS/ -- AI26289/AI/NIAID NIH HHS/ -- GM074942/GM/NIGMS NIH HHS/ -- GM62414/GM/NIGMS NIH HHS/ -- P50 GM062414/GM/NIGMS NIH HHS/ -- P50 GM062414-02/GM/NIGMS NIH HHS/ -- U54 GM074942/GM/NIGMS NIH HHS/ -- U54 GM074942-04S2/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2006 Jun 9;312(5779):1526-30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Molecular Genetics, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16763151" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacterial Proteins/*genetics/physiology/secretion ; Crystallography, X-Ray ; Cystic Fibrosis/complications/microbiology ; Humans ; Models, Molecular ; Protein Conformation ; Pseudomonas Infections/complications/microbiology ; Pseudomonas aeruginosa/*genetics/pathogenicity ; Rats ; Recombinant Fusion Proteins ; Sequence Alignment ; Virulence/genetics
    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
    Publication Date: 2006-03-11
    Description: Nisin is a posttranslationally modified antimicrobial peptide that is widely used as a food preservative. It contains five cyclic thioethers of varying sizes that are installed by a single enzyme, NisC. Reported here are the in vitro reconstitution of the cyclization process and the x-ray crystal structure of the NisC enzyme. The structure reveals similarities in fold and substrate activation with mammalian farnesyl transferases, suggesting that human homologs of NisC posttranslationally modify a cysteine of a protein substrate.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, Bo -- Yu, John Paul J -- Brunzelle, Joseph S -- Moll, Gert N -- van der Donk, Wilfred A -- Nair, Satish K -- GM58822/GM/NIGMS NIH HHS/ -- R01 GM079038/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2006 Mar 10;311(5766):1464-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL 61801, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16527981" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Anti-Bacterial Agents/*biosynthesis/chemistry ; Carbon-Sulfur Lyases/chemistry/genetics/*metabolism ; Crystallography, X-Ray ; Farnesyltranstransferase/chemistry ; Humans ; Lactococcus lactis/*enzymology ; Models, Molecular ; Molecular Sequence Data ; Nisin/*biosynthesis/chemistry ; Protein Conformation ; Protein Processing, Post-Translational ; Sequence Homology, Amino Acid ; Structure-Activity Relationship
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
    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
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
    Publication Date: 2006-10-07
    Description: For characterization of sequence and posttranslational modifications, molecular and fragment ion mass data from ionizing and dissociating a protein in the mass spectrometer are far more specific than are masses of peptides from the protein's digestion. We extend the approximately 500-residue, approximately 50-kilodalton (kD) dissociation limitation of this top-down methodology by using electrospray additives, heated vaporization, and separate noncovalent and covalent bond dissociation. This process can cleave 287 interresidue bonds in the termini of a 1314-residue (144-kD) protein, specify previously unidentified disulfide bonds between 8 of 27 cysteines in a 1714-residue (200-kD) protein, and correct sequence predictions in two proteins, one with 2153 residues (229 kD).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Han, Xuemei -- Jin, Mi -- Breuker, Kathrin -- McLafferty, Fred W -- GM16609/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2006 Oct 6;314(5796):109-12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, NY 14853, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17023655" target="_blank"〉PubMed〈/a〉
    Keywords: Acyltransferases/chemistry ; Amino Acid Sequence ; Carbon-Nitrogen Ligases with Glutamine as Amide-N-Donor/chemistry ; Chemistry, Physical ; Complement C4/chemistry ; Cysteine/chemistry ; Humans ; Mass Spectrometry/*methods ; Molecular Weight ; Peptide Fragments/chemistry ; Physicochemical Phenomena ; Protein Conformation ; Protein Folding ; Protein Processing, Post-Translational ; Proteins/*chemistry ; Proteomics ; Spectrometry, Mass, Electrospray Ionization/*methods
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  • 7
    Publication Date: 2006-07-15
    Description: The electric fields produced in folded proteins influence nearly every aspect of protein function. We present a vibrational spectroscopy technique that measures changes in electric field at a specific site of a protein as shifts in frequency (Stark shifts) of a calibrated nitrile vibration. A nitrile-containing inhibitor is used to deliver a unique probe vibration to the active site of human aldose reductase, and the response of the nitrile stretch frequency is measured for a series of mutations in the enzyme active site. These shifts yield quantitative information on electric fields that can be directly compared with electrostatics calculations. We show that extensive molecular dynamics simulations and ensemble averaging are required to reproduce the observed changes in field.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Suydam, Ian T -- Snow, Christopher D -- Pande, Vijay S -- Boxer, Steven G -- New York, N.Y. -- Science. 2006 Jul 14;313(5784):200-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, Stanford University, Stanford, CA 94305-5080, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16840693" target="_blank"〉PubMed〈/a〉
    Keywords: Aldehyde Reductase/antagonists & inhibitors/*chemistry/genetics/metabolism ; Binding Sites ; Circular Dichroism ; Computer Simulation ; *Electricity ; Enzyme Inhibitors/metabolism/pharmacology ; Humans ; Models, Molecular ; Mutation ; Nitriles/metabolism/pharmacology ; Protein Conformation ; Protein Folding ; Protein Structure, Tertiary ; Spectrophotometry, Infrared ; Spectrum Analysis ; Static Electricity
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  • 8
    Publication Date: 2006-03-25
    Description: Tracheal cytotoxin (TCT), a naturally occurring fragment of Gram-negative peptidoglycan, is a potent elicitor of innate immune responses in Drosophila. It induces the heterodimerization of its recognition receptors, the peptidoglycan recognition proteins (PGRPs) LCa and LCx, which activates the immune deficiency pathway. The crystal structure at 2.1 angstrom resolution of TCT in complex with the ectodomains of PGRP-LCa and PGRP-LCx shows that TCT is bound to and presented by the LCx ectodomain for recognition by the LCa ectodomain; the latter lacks a canonical peptidoglycan-docking groove conserved in other PGRPs. The interface, revealed in atomic detail, between TCT and the receptor complex highlights the importance of the anhydro-containing disaccharide in bridging the two ectodomains together and the critical role of diaminopimelic acid as the specificity determinant for PGRP interaction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chang, Chung-I -- Chelliah, Yogarany -- Borek, Dominika -- Mengin-Lecreulx, Dominique -- Deisenhofer, Johann -- New York, N.Y. -- Science. 2006 Mar 24;311(5768):1761-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, University of Texas Southwestern Medical Center at Dallas, 6001 Forest Park Road, Dallas, TX 75390-9050, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16556841" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Carrier Proteins/*chemistry/metabolism ; Crystallization ; Crystallography, X-Ray ; Cytotoxins/*chemistry/metabolism ; Drosophila melanogaster ; Hydrogen Bonding ; Hydrophobic and Hydrophilic Interactions ; Models, Molecular ; Molecular Sequence Data ; Peptidoglycan/*chemistry/metabolism ; Protein Conformation ; Protein Structure, Secondary ; Protein Structure, Tertiary
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  • 9
    Publication Date: 2006-03-04
    Description: The homodimeric mammalian fatty acid synthase is one of the most complex cellular multienzymes, in that each 270-kilodalton polypeptide chain carries all seven functional domains required for fatty acid synthesis. We have calculated a 4.5 angstrom-resolution x-ray crystallographic map of porcine fatty acid synthase, highly homologous to the human multienzyme, and placed homologous template structures of all individual catalytic domains responsible for the cyclic elongation of fatty acid chains into the electron density. The positioning of domains reveals the complex architecture of the multienzyme forming an intertwined dimer with two lateral semicircular reaction chambers, each containing a full set of catalytic domains required for fatty acid elongation. Large distances between active sites and conformational differences between the reaction chambers demonstrate that mobility of the acyl carrier protein and general flexibility of the multienzyme must accompany handover of the reaction intermediates during the reaction cycle.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maier, Timm -- Jenni, Simon -- Ban, Nenad -- New York, N.Y. -- Science. 2006 Mar 3;311(5765):1258-62.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Molecular Biology and Biophysics, Department of Biology, Swiss Federal Institute of Technology (ETH Zurich), 8093 Zurich, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16513975" target="_blank"〉PubMed〈/a〉
    Keywords: Acyl Carrier Protein/chemistry/metabolism ; Animals ; Binding Sites ; Catalytic Domain ; Crystallization ; Crystallography, X-Ray ; Dimerization ; Fatty Acid Synthases/*chemistry/isolation & purification/metabolism ; Fatty Acids/biosynthesis ; Mammary Glands, Animal/enzymology ; Models, Molecular ; Protein Conformation ; Protein Folding ; Protein Structure, Quaternary ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Protein Subunits/chemistry ; Swine
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  • 10
    Publication Date: 2006-02-14
    Description: Respiratory complex I plays a central role in cellular energy production in bacteria and mitochondria. Its dysfunction is implicated in many human neurodegenerative diseases, as well as in aging. The crystal structure of the hydrophilic domain (peripheral arm) of complex I from Thermus thermophilus has been solved at 3.3 angstrom resolution. This subcomplex consists of eight subunits and contains all the redox centers of the enzyme, including nine iron-sulfur clusters. The primary electron acceptor, flavin-mononucleotide, is within electron transfer distance of cluster N3, leading to the main redox pathway, and of the distal cluster N1a, a possible antioxidant. The structure reveals new aspects of the mechanism and evolution of the enzyme. The terminal cluster N2 is coordinated, uniquely, by two consecutive cysteines. The novel subunit Nqo15 has a similar fold to the mitochondrial iron chaperone frataxin, and it may be involved in iron-sulfur cluster regeneration in the complex.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sazanov, Leonid A -- Hinchliffe, Philip -- MC_U105674180/Medical Research Council/United Kingdom -- New York, N.Y. -- Science. 2006 Mar 10;311(5766):1430-6. Epub 2006 Feb 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Council Dunn Human Nutrition Unit, Wellcome Trust/MRC Building, Hills Road, Cambridge CB2 2XY, U.K. sazanov@mrc-dunn.cam.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16469879" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacterial Proteins/*chemistry ; Binding Sites ; Crystallography, X-Ray ; Electron Transport Complex I/*chemistry ; Iron-Binding Proteins/chemistry ; Oxidation-Reduction ; Protein Conformation ; Protein Folding ; Protein Structure, Tertiary ; Protein Subunits ; Thermus thermophilus/*chemistry
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