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1mvw

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(New page: 200px<br /><applet load="1mvw" size="450" color="white" frame="true" align="right" spinBox="true" caption="1mvw, resolution 70.00&Aring;" /> '''MOLECULAR MODELS OF...)
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[[Image:1mvw.jpg|left|200px]]<br /><applet load="1mvw" size="450" color="white" frame="true" align="right" spinBox="true"
 
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caption="1mvw, resolution 70.00&Aring;" />
 
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'''MOLECULAR MODELS OF AVERAGED RIGOR CROSSBRIDGES FROM TOMOGRAMS OF INSECT FLIGHT MUSCLE'''<br />
 
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==Overview==
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==MOLECULAR MODELS OF AVERAGED RIGOR CROSSBRIDGES FROM TOMOGRAMS OF INSECT FLIGHT MUSCLE==
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Electron tomography, correspondence analysis, molecular model building, and real-space refinement provide detailed 3-D structures for in situ, myosin crossbridges in the nucleotide-free state (rigor), thought to, represent the end of the power stroke. Unaveraged tomograms from a 25-nm, longitudinal section of insect flight muscle preserved native structural, variation. Recurring crossbridge motifs that repeat every 38.7 nm along, the actin filament were extracted from the tomogram and classified by, correspondence analysis into 25 class averages, which improved the signal, to noise ratio. Models based on the atomic structures of actin and of, myosin subfragment 1 were rebuilt to fit 11 class averages. A real-space, refinement procedure was applied to quantitatively fit the reconstructions, and to minimize steric clashes between domains introduced during the, fitting. These combined procedures show that no single myosin head, structure can fit all the in situ crossbridges. The validity of the, approach is supported by agreement of these atomic models with fluorescent, probe data from vertebrate muscle as well as with data from regulatory, light chain crosslinking between heads of smooth muscle heavy meromyosin, when bound to actin.
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<SX load='1mvw' size='340' side='right' viewer='molstar' caption='[[1mvw]], [[Resolution|resolution]] 70.00&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1mvw]] is a 32 chain structure with sequence from [https://en.wikipedia.org/wiki/Gallus_gallus Gallus gallus] and [https://en.wikipedia.org/wiki/Oryctolagus_cuniculus Oryctolagus cuniculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1MVW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1MVW FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 70&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MLY:N-DIMETHYL-LYSINE'>MLY</scene></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1mvw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1mvw OCA], [https://pdbe.org/1mvw PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1mvw RCSB], [https://www.ebi.ac.uk/pdbsum/1mvw PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1mvw ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/ACTS_RABIT ACTS_RABIT] Actins are highly conserved proteins that are involved in various types of cell motility and are ubiquitously expressed in all eukaryotic cells.
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/mv/1mvw_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1mvw ConSurf].
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<div style="clear:both"></div>
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==About this Structure==
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==See Also==
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1MVW is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Gallus_gallus Gallus gallus] and [http://en.wikipedia.org/wiki/Oryctolagus_cuniculus Oryctolagus cuniculus]. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1MVW OCA].
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*[[Actin 3D structures|Actin 3D structures]]
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*[[Myosin 3D Structures|Myosin 3D Structures]]
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==Reference==
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__TOC__
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Molecular modeling of averaged rigor crossbridges from tomograms of insect flight muscle., Chen LF, Winkler H, Reedy MK, Reedy MC, Taylor KA, J Struct Biol. 2002 Apr-May;138(1-2):92-104. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=12160705 12160705]
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</SX>
[[Category: Gallus gallus]]
[[Category: Gallus gallus]]
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[[Category: Large Structures]]
[[Category: Oryctolagus cuniculus]]
[[Category: Oryctolagus cuniculus]]
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[[Category: Protein complex]]
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[[Category: Chen LF]]
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[[Category: Chen, L.F.]]
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[[Category: Reedy MC]]
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[[Category: Reedy, M.C.]]
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[[Category: Reedy MK]]
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[[Category: Reedy, M.K.]]
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[[Category: Taylor KA]]
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[[Category: Taylor, K.A.]]
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[[Category: Winkler H]]
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[[Category: Winkler, H.]]
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[[Category: actin-myosin complex in situ in muscle]]
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''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Tue Nov 20 21:44:37 2007''
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Current revision

MOLECULAR MODELS OF AVERAGED RIGOR CROSSBRIDGES FROM TOMOGRAMS OF INSECT FLIGHT MUSCLE

1mvw, resolution 70.00Å

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