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  • 1
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    Closing of the nucleotide pocket of kinesin-family motors upon binding to microtubules (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-05-06
    Description: We have used adenosine diphosphate analogs containing electron paramagnetic resonance (EPR) spin moieties and EPR spectroscopy to show that the nucleotide-binding site of kinesin-family motors closes when the motor.diphosphate complex binds to microtubules. Structural analyses demonstrate that a domain movement in the switch 1 region at the nucleotide site, homologous to domain movements in the switch 1 region in the G proteins [heterotrimeric guanine nucleotide-binding proteins], explains the EPR data. The switch movement primes the motor both for the free energy-yielding nucleotide hydrolysis reaction and for subsequent conformational changes that are crucial for the generation of force and directed motion along the microtubule.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Naber, Nariman -- Minehardt, Todd J -- Rice, Sarah -- Chen, Xiaoru -- Grammer, Jean -- Matuska, Marija -- Vale, Ronald D -- Kollman, Peter A -- Car, Roberto -- Yount, Ralph G -- Cooke, Roger -- Pate, Edward -- AR39643/AR/NIAMS NIH HHS/ -- AR42895/AR/NIAMS NIH HHS/ -- DK05915/DK/NIDDK NIH HHS/ -- GM29072/GM/NIGMS NIH HHS/ -- RR1081/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2003 May 2;300(5620):798-801.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, University of California, San Francisco, CA 94143, USA. naber@itsa.ucsf.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12730601" target="_blank"〉PubMed〈/a〉
    Keywords: Adenine Nucleotides/*metabolism ; Adenosine Diphosphate/analogs & derivatives/metabolism ; Adenosine Triphosphate/analogs & derivatives/metabolism ; Animals ; Binding Sites ; Computer Simulation ; Crystallography, X-Ray ; *Drosophila Proteins ; Drosophila melanogaster ; Electron Spin Resonance Spectroscopy ; Humans ; Hydrogen Bonding ; Hydrolysis ; Kinesin/*chemistry/*metabolism ; Microtubules/*metabolism ; Models, Molecular ; Molecular Motor Proteins/*chemistry/*metabolism ; Molecular Probes/metabolism ; Protein Conformation ; Spin Labels
    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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    Microtubule disassembly by ATP-dependent oligomerization of the AAA enzyme katanin (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-10-26
    Description: Katanin, a member of the AAA adenosine triphosphatase (ATPase) superfamily, uses nucleotide hydrolysis energy to sever and disassemble microtubules. Many AAA enzymes disassemble stable protein-protein complexes, but their mechanisms are not well understood. A fluorescence resonance energy transfer assay demonstrated that the p60 subunit of katanin oligomerized in an adenosine triphosphate (ATP)- and microtubule-dependent manner. Oligomerization increased the affinity of katanin for microtubules and stimulated its ATPase activity. After hydrolysis of ATP, microtubule-bound katanin oligomers disassembled microtubules and then dissociated into free katanin monomers. Coupling a nucleotide-dependent oligomerization cycle to the disassembly of a target protein complex may be a general feature of ATP-hydrolyzing AAA domains.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hartman, J J -- Vale, R D -- New York, N.Y. -- Science. 1999 Oct 22;286(5440):782-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Howard Hughes Medical Institute and the Department of Cellular and Molecular Pharmacology, University of California, San Francisco, CA 94143, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10531065" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphatases/*chemistry/*metabolism ; Adenosine Triphosphate/analogs & derivatives/*metabolism ; Amino Acid Sequence ; Centrifugation, Density Gradient ; Fluorescence ; Hydrolysis ; Luminescent Proteins ; Microtubules/*metabolism ; Models, Biological ; Molecular Sequence Data ; Polymers ; Recombinant Fusion Proteins/chemistry/metabolism ; Tubulin/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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  • 3
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    Conversion of Unc104/KIF1A kinesin into a processive motor after dimerization (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-09-28
    Description: Unc104/KIF1A belongs to a class of monomeric kinesin motors that have been thought to possess an unusual motility mechanism. Unlike the unidirectional motion driven by the coordinated actions of the two heads in conventional kinesins, single-headed KIF1A was reported to undergo biased diffusional motion along microtubules. Here, we show that Unc104/KIF1A can dimerize and move unidirectionally and processively with rapid velocities characteristic of transport in living cells. These results suggest that Unc104/KIF1A operates in vivo by a mechanism similar to conventional kinesin and that regulation of motor dimerization may be used to control transport by this class of kinesins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tomishige, Michio -- Klopfenstein, Dieter R -- Vale, Ronald D -- AR42895/AR/NIAMS NIH HHS/ -- New York, N.Y. -- Science. 2002 Sep 27;297(5590):2263-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Howard Hughes Medical Institute and the Department of Cellular and Molecular Pharmacology, University of California, San Francisco, CA 94143, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12351789" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Caenorhabditis elegans ; Caenorhabditis elegans Proteins/chemistry/physiology ; Diffusion ; Dimerization ; Humans ; Kinesin/*chemistry/physiology ; Liposomes ; Microtubules/*physiology ; Molecular Motor Proteins/*chemistry/*physiology ; Molecular Sequence Data ; Movement ; Mutation ; Nerve Tissue Proteins/*chemistry/*physiology ; Protein Structure, Tertiary ; Rats ; Recombinant Fusion Proteins/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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  • 4
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    Plasma membrane compartmentalization in yeast by messenger RNA transport and a septin diffusion barrier (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-10-13
    Description: Asymmetric localization of proteins plays a key role in many cellular processes, including cell polarity and cell fate determination. Using DNA microarray analysis, we identified a plasma membrane protein-encoding mRNA (IST2) that is transported to the bud tip by an actomyosin-based process. mRNA localization created a higher concentration of IST2 protein in the bud compared with that of the mother cell, and this asymmetry was maintained by a septin-mediated membrane diffusion barrier at the mother-bud neck. These results indicate that yeast creates distinct plasma membrane compartments, as has been described in neurons and epithelial cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Takizawa, P A -- DeRisi, J L -- Wilhelm, J E -- Vale, R D -- 38496/PHS HHS/ -- New York, N.Y. -- Science. 2000 Oct 13;290(5490):341-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cellular and Molecular Pharmacology, Howard Hughes Medical Institute, University of California, San Francisco, CA 94143, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11030653" target="_blank"〉PubMed〈/a〉
    Keywords: Actomyosin/metabolism ; Biological Transport ; Cell Compartmentation ; Cell Cycle ; Cell Cycle Proteins/genetics/*metabolism ; Cell Membrane/metabolism ; *Cytoskeletal Proteins ; *DNA-Binding Proteins ; Diffusion ; Fungal Proteins/genetics/*metabolism ; Membrane Proteins/genetics/*metabolism ; Mutation ; *Myosin Heavy Chains ; *Myosin Type V ; Myosins/metabolism ; Oligonucleotide Array Sequence Analysis ; RNA, Fungal/metabolism ; RNA, Messenger/*metabolism ; Recombinant Fusion Proteins/metabolism ; *Repressor Proteins ; Saccharomyces cerevisiae/cytology/genetics/growth & development/*metabolism ; *Saccharomyces cerevisiae Proteins ; Temperature ; Transcription Factors/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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  • 5
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    The way things move: looking under the hood of molecular motor proteins (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-07
    Description: The microtubule-based kinesin motors and actin-based myosin motors generate motions associated with intracellular trafficking, cell division, and muscle contraction. Early studies suggested that these molecular motors work by very different mechanisms. Recently, however, it has become clear that kinesin and myosin share a common core structure and convert energy from adenosine triphosphate into protein motion using a similar conformational change strategy. Many different types of mechanical amplifiers have evolved that operate in conjunction with the conserved core. This modular design has given rise to a remarkable diversity of kinesin and myosin motors whose motile properties are optimized for performing distinct biological functions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vale, R D -- Milligan, R A -- New York, N.Y. -- Science. 2000 Apr 7;288(5463):88-95.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Department of Cellular and Molecular Pharmacology, University of California, 513 Parnassus Avenue, San Francisco, CA 94143, USA. vale@phy.ucsf.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10753125" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/metabolism ; Adenosine Triphosphate/metabolism ; Animals ; Binding Sites ; Cytoskeleton/metabolism ; Evolution, Molecular ; Kinesin/chemistry/*physiology ; Microtubules/metabolism ; Models, Biological ; Models, Molecular ; Molecular Motor Proteins/chemistry/*physiology ; Myosins/chemistry/*physiology ; Protein Conformation ; Protein Structure, Secondary
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
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  • 6
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    Functional genomic screen reveals genes involved in lipid-droplet formation and utilization (2008)
    Nature Publishing Group (NPG)
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    Publication Date: 2008-04-15
    Description: Eukaryotic cells store neutral lipids in cytoplasmic lipid droplets enclosed in a monolayer of phospholipids and associated proteins. These dynamic organelles serve as the principal reservoirs for storing cellular energy and for the building blocks for membrane lipids. Excessive lipid accumulation in cells is a central feature of obesity, diabetes and atherosclerosis, yet remarkably little is known about lipid-droplet cell biology. Here we show, by means of a genome-wide RNA interference (RNAi) screen in Drosophila S2 cells that about 1.5% of all genes function in lipid-droplet formation and regulation. The phenotypes of the gene knockdowns sorted into five distinct phenotypic classes. Genes encoding enzymes of phospholipid biosynthesis proved to be determinants of lipid-droplet size and number, suggesting that the phospholipid composition of the monolayer profoundly affects droplet morphology and lipid utilization. A subset of the Arf1-COPI vesicular transport proteins also regulated droplet morphology and lipid utilization, thereby identifying a previously unrecognized function for this machinery. These phenotypes are conserved in mammalian cells, suggesting that insights from these studies are likely to be central to our understanding of human diseases involving excessive lipid storage.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2734507/" 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/PMC2734507/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Guo, Yi -- Walther, Tobias C -- Rao, Meghana -- Stuurman, Nico -- Goshima, Gohta -- Terayama, Koji -- Wong, Jinny S -- Vale, Ronald D -- Walter, Peter -- Farese, Robert V -- R21 DK078254/DK/NIDDK NIH HHS/ -- R21 DK078254-01/DK/NIDDK NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2008 May 29;453(7195):657-61. doi: 10.1038/nature06928. Epub 2008 Apr 13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Biophysics, University of California, San Francisco, California 94158, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18408709" target="_blank"〉PubMed〈/a〉
    Keywords: ADP-Ribosylation Factors/metabolism ; Animals ; Cell Line ; Coat Protein Complex I/metabolism ; Drosophila Proteins/*genetics ; Drosophila melanogaster/*cytology/*genetics ; Genes, Insect/*genetics ; Genome, Insect/*genetics ; *Genomics ; Lipid Metabolism/*genetics ; Lipolysis ; Phenotype ; Phosphatidylcholines/metabolism ; RNA Interference
    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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  • 7
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    Structural basis of microtubule severing by the hereditary spastic paraplegia protein spastin (2008)
    Nature Publishing Group (NPG)
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    Publication Date: 2008-01-19
    Description: Spastin, the most common locus for mutations in hereditary spastic paraplegias, and katanin are related microtubule-severing AAA ATPases involved in constructing neuronal and non-centrosomal microtubule arrays and in segregating chromosomes. The mechanism by which spastin and katanin break and destabilize microtubules is unknown, in part owing to the lack of structural information on these enzymes. Here we report the X-ray crystal structure of the Drosophila spastin AAA domain and provide a model for the active spastin hexamer generated using small-angle X-ray scattering combined with atomic docking. The spastin hexamer forms a ring with a prominent central pore and six radiating arms that may dock onto the microtubule. Helices unique to the microtubule-severing AAA ATPases surround the entrances to the pore on either side of the ring, and three highly conserved loops line the pore lumen. Mutagenesis reveals essential roles for these structural elements in the severing reaction. Peptide and antibody inhibition experiments further show that spastin may dismantle microtubules by recognizing specific features in the carboxy-terminal tail of tubulin. Collectively, our data support a model in which spastin pulls the C terminus of tubulin through its central pore, generating a mechanical force that destabilizes tubulin-tubulin interactions within the microtubule lattice. Our work also provides insights into the structural defects in spastin that arise from mutations identified in hereditary spastic paraplegia patients.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2882799/" 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/PMC2882799/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roll-Mecak, Antonina -- Vale, Ronald D -- K99 NS057934-01/NS/NINDS NIH HHS/ -- K99 NS057934-02/NS/NINDS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2008 Jan 17;451(7176):363-7. doi: 10.1038/nature06482.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Department of Cellular and Molecular Pharmacology, University of California, San Francisco, 600 16th Street, San Francisco, California 94158, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18202664" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphatases/antagonists & ; inhibitors/*chemistry/*genetics/*metabolism ; Animals ; Drosophila Proteins/antagonists & inhibitors/*chemistry/genetics/*metabolism ; Humans ; Microtubules/chemistry/*metabolism ; Models, Biological ; Models, Molecular ; Protein Structure, Quaternary ; Protein Structure, Tertiary ; Scattering, Small Angle ; Spastic Paraplegia, Hereditary/*genetics ; Structure-Activity Relationship ; Substrate Specificity ; Tubulin/chemistry/metabolism ; X-Ray Diffraction
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 8
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    Structure and functional role of dynein's microtubule-binding domain (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-12-17
    Description: Dynein motors move various cargos along microtubules within the cytoplasm and power the beating of cilia and flagella. An unusual feature of dynein is that its microtubule-binding domain (MTBD) is separated from its ring-shaped AAA+ adenosine triphosphatase (ATPase) domain by a 15-nanometer coiled-coil stalk. We report the crystal structure of the mouse cytoplasmic dynein MTBD and a portion of the coiled coil, which supports a mechanism by which the ATPase domain and MTBD may communicate through a shift in the heptad registry of the coiled coil. Surprisingly, functional data suggest that the MTBD, and not the ATPase domain, is the main determinant of the direction of dynein motility.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2663340/" 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/PMC2663340/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carter, Andrew P -- Garbarino, Joan E -- Wilson-Kubalek, Elizabeth M -- Shipley, Wesley E -- Cho, Carol -- Milligan, Ronald A -- Vale, Ronald D -- Gibbons, I R -- GM30401-29/GM/NIGMS NIH HHS/ -- GM52468/GM/NIGMS NIH HHS/ -- P01 AR042895/AR/NIAMS NIH HHS/ -- P01 AR042895-15/AR/NIAMS NIH HHS/ -- P01-AR42895/AR/NIAMS NIH HHS/ -- P41 RR-17573/RR/NCRR NIH HHS/ -- R01 GM097312/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2008 Dec 12;322(5908):1691-5. doi: 10.1126/science.1164424.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and 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/19074350" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Amino Acid Sequence ; Animals ; Binding Sites ; Crystallization ; Crystallography, X-Ray ; Dimerization ; Dyneins/*chemistry/*metabolism ; Hydrophobic and Hydrophilic Interactions ; Image Processing, Computer-Assisted ; Mice ; Microscopy, Electron ; Microtubules/*metabolism/ultrastructure ; Models, Molecular ; Molecular Sequence Data ; Movement ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Recombinant Fusion Proteins/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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    Polarized myosin produces unequal-size daughters during asymmetric cell division (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-10-12
    Description: Asymmetric positioning of the mitotic spindle before cytokinesis can produce different-sized daughter cells that have distinct fates. Here, we found an asymmetric division in the Caenorhabditis elegans Q neuroblast lineage that began with a centered spindle but generated different-sized daughters, the smaller (anterior) of which underwent apoptosis. During this division, more myosin II accumulated anteriorly, suggesting that asymmetric contractile forces might produce different-sized daughters. Indeed, partial inactivation of anterior myosin by chromophore-assisted laser inactivation created a more symmetric division and allowed the survival and differentiation of the anterior daughter. Thus, the balance of myosin activity on the two sides of a dividing cell can govern the size and fate of the daughters.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3032534/" 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/PMC3032534/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ou, Guangshuo -- Stuurman, Nico -- D'Ambrosio, Michael -- Vale, Ronald D -- R37 GM038499/GM/NIGMS NIH HHS/ -- R37 GM038499-22/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2010 Oct 29;330(6004):677-80. doi: 10.1126/science.1196112. Epub 2010 Sep 30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Howard Hughes Medical Institute and the Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA. gou@ibp.ac.cn〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20929735" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Caenorhabditis elegans/*cytology ; Caenorhabditis elegans Proteins/*metabolism ; Cell Differentiation ; *Cell Division ; Cell Lineage ; Cell Polarity ; Centrosome/physiology ; Cytoplasm/physiology ; Metaphase ; Myosin Heavy Chains/*metabolism ; Neurons/*cytology ; Spindle Apparatus/physiology
    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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  • 10
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    Crystal structure of the dynein motor domain (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-02-19
    Description: Dyneins are microtubule-based motor proteins that power ciliary beating, transport intracellular cargos, and help to construct the mitotic spindle. Evolved from ring-shaped hexameric AAA-family adenosine triphosphatases (ATPases), dynein's large size and complexity have posed challenges for understanding its structure and mechanism. Here, we present a 6 angstrom crystal structure of a functional dimer of two ~300-kilodalton motor domains of yeast cytoplasmic dynein. The structure reveals an unusual asymmetric arrangement of ATPase domains in the ring-shaped motor domain, the manner in which the mechanical element interacts with the ATPase ring, and an unexpected interaction between two coiled coils that create a base for the microtubule binding domain. The arrangement of these elements provides clues as to how adenosine triphosphate-driven conformational changes might be transmitted across the motor domain.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3169322/" 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/PMC3169322/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carter, Andrew P -- Cho, Carol -- Jin, Lan -- Vale, Ronald D -- MC_UP_A025_1011/Medical Research Council/United Kingdom -- R01 GM097312/GM/NIGMS NIH HHS/ -- R01 GM097312-01/GM/NIGMS NIH HHS/ -- R01 GM097312-02/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2011 Mar 4;331(6021):1159-65. doi: 10.1126/science.1202393. Epub 2011 Feb 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cellular and Molecular Pharmacology, Howard Hughes Medical Institute, University of California-San Francisco, 600 16th Street, San Francisco, CA 94158, USA. cartera@mrc-lmb.cam.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21330489" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Allosteric Regulation ; Amino Acid Sequence ; Binding Sites ; Crystallography, X-Ray ; Cytoplasmic Dyneins/*chemistry/*metabolism ; Methionine/chemistry ; Microtubules/*metabolism ; Models, Molecular ; Molecular Sequence Data ; Protein Conformation ; Protein Folding ; Protein Multimerization ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Recombinant Fusion Proteins/chemistry ; Saccharomyces cerevisiae Proteins/*chemistry/*metabolism
    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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