3dtp

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[[Image:3dtp.png|left|200px]]
 
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==Tarantula heavy meromyosin obtained by flexible docking to Tarantula muscle thick filament Cryo-EM 3D-MAP==
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The line below this paragraph, containing "STRUCTURE_3dtp", creates the "Structure Box" on the page.
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<SX load='3dtp' size='340' side='right' viewer='molstar' caption='[[3dtp]], [[Resolution|resolution]] 20.00&Aring;' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[3dtp]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Avicularia_avicularia Avicularia avicularia], [https://en.wikipedia.org/wiki/Gallus_gallus Gallus gallus] and [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3DTP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3DTP 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]] 20&#8491;</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=3dtp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3dtp OCA], [https://pdbe.org/3dtp PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3dtp RCSB], [https://www.ebi.ac.uk/pdbsum/3dtp PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3dtp ProSAT]</span></td></tr>
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{{STRUCTURE_3dtp| PDB=3dtp | SCENE= }}
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</table>
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== Disease ==
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[https://www.uniprot.org/uniprot/MYH7_HUMAN MYH7_HUMAN] Defects in MYH7 are the cause of familial hypertrophic cardiomyopathy type 1 (CMH1) [MIM:[https://omim.org/entry/192600 192600]. Familial hypertrophic cardiomyopathy is a hereditary heart disorder characterized by ventricular hypertrophy, which is usually asymmetric and often involves the interventricular septum. The symptoms include dyspnea, syncope, collapse, palpitations, and chest pain. They can be readily provoked by exercise. The disorder has inter- and intrafamilial variability ranging from benign to malignant forms with high risk of cardiac failure and sudden cardiac death.<ref>PMID:1975517</ref> <ref>PMID:1417858</ref> <ref>PMID:1638703</ref> <ref>PMID:1552912</ref> <ref>PMID:8250038</ref> <ref>PMID:8343162</ref> <ref>PMID:8435239</ref> <ref>PMID:8268932</ref> <ref>PMID:8254035</ref> <ref>PMID:8483915</ref> <ref>PMID:7848441</ref> <ref>PMID:7874131</ref> <ref>PMID:8282798</ref> <ref>PMID:7581410</ref> <ref>PMID:7731997</ref> <ref>PMID:8655135</ref> <ref>PMID:8899546</ref> <ref>PMID:10065021</ref> <ref>PMID:9544842</ref> <ref>PMID:9829907</ref> <ref>PMID:9822100</ref> <ref>PMID:10521296</ref> <ref>PMID:10563488</ref> <ref>PMID:10329202</ref> <ref>PMID:10679957</ref> <ref>PMID:10862102</ref> <ref>PMID:11113006</ref> <ref>PMID:11214007</ref> <ref>PMID:11733062</ref> <ref>PMID:11424919</ref> <ref>PMID:11133230</ref> <ref>PMID:12081993</ref> <ref>PMID:11861413</ref> <ref>PMID:11968089</ref> <ref>PMID:12951062</ref> <ref>PMID:12566107</ref> <ref>PMID:12707239</ref> <ref>PMID:12974739</ref> <ref>PMID:12820698</ref> <ref>PMID:12975413</ref> <ref>PMID:12590187</ref> <ref>PMID:12818575</ref> <ref>PMID:15358028</ref> <ref>PMID:15563892</ref> <ref>PMID:15483641</ref> <ref>PMID:15858117</ref> <ref>PMID:16199542</ref> <ref>PMID:15856146</ref> <ref>PMID:16650083</ref> <ref>PMID:16938236</ref> <ref>PMID:17372140</ref> <ref>PMID:18403758</ref> Defects in MYH7 are the cause of myopathy myosin storage (MYOMS) [MIM:[https://omim.org/entry/608358 608358]. In this disorder, muscle biopsy shows type 1 fiber predominance and increased interstitial fat and connective tissue. Inclusion bodies consisting of the beta cardiac myosin heavy chain are present in the majority of type 1 fibers, but not in type 2 fibers.<ref>PMID:14520662</ref> <ref>PMID:15136674</ref> <ref>PMID:17336526</ref> Defects in MYH7 are the cause of scapuloperoneal myopathy MYH7-related (SPMM) [MIM:[https://omim.org/entry/181430 181430]; also known as scapuloperoneal syndrome myopathic type. SPMM is a progressive muscular atrophia beginning in the lower legs and affecting the shoulder region earlier and more severely than distal arm.<ref>PMID:17336526</ref> Defects in MYH7 are a cause of cardiomyopathy dilated type 1S (CMD1S) [MIM:[https://omim.org/entry/613426 613426]. Dilated cardiomyopathy is a disorder characterized by ventricular dilation and impaired systolic function, resulting in congestive heart failure and arrhythmia. Patients are at risk of premature death.<ref>PMID:11106718</ref> <ref>PMID:12379228</ref> <ref>PMID:15769782</ref> <ref>PMID:21846512</ref> Defects in MYH7 are the cause of myopathy distal type 1 (MPD1) [MIM:[https://omim.org/entry/160500 160500]. MPD1 is a muscular disorder characterized by early-onset selective weakness of the great toe and ankle dorsiflexors, followed by weakness of the finger extensors. Mild proximal weakness occasionally develops years later after the onset of the disease.<ref>PMID:15322983</ref> <ref>PMID:17548557</ref>
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== Function ==
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[https://www.uniprot.org/uniprot/MYH11_CHICK MYH11_CHICK] Muscle contraction.[https://www.uniprot.org/uniprot/MYH7_HUMAN MYH7_HUMAN] Muscle contraction.
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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/dt/3dtp_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=3dtp ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Muscle contraction involves the interaction of the myosin heads of the thick filaments with actin subunits of the thin filaments. Relaxation occurs when this interaction is blocked by molecular switches on these filaments. In many muscles, myosin-linked regulation involves phosphorylation of the myosin regulatory light chains (RLCs). Electron microscopy of vertebrate smooth muscle myosin molecules (regulated by phosphorylation) has provided insight into the relaxed structure, revealing that myosin is switched off by intramolecular interactions between its two heads, the free head and the blocked head. Three-dimensional reconstruction of frozen-hydrated specimens revealed that this asymmetric head interaction is also present in native thick filaments of tarantula striated muscle. Our goal in this study was to elucidate the structural features of the tarantula filament involved in phosphorylation-based regulation. A new reconstruction revealed intra- and intermolecular myosin interactions in addition to those seen previously. To help interpret the interactions, we sequenced the tarantula RLC and fitted an atomic model of the myosin head that included the predicted RLC atomic structure and an S2 (subfragment 2) crystal structure to the reconstruction. The fitting suggests one intramolecular interaction, between the cardiomyopathy loop of the free head and its own S2, and two intermolecular interactions, between the cardiac loop of the free head and the essential light chain of the blocked head and between the Leu305-Gln327 interaction loop of the free head and the N-terminal fragment of the RLC of the blocked head. These interactions, added to those previously described, would help switch off the thick filament. Molecular dynamics simulations suggest how phosphorylation could increase the helical content of the RLC N-terminus, weakening these interactions, thus releasing both heads and activating the thick filament.
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===Tarantula heavy meromyosin obtained by flexible docking to Tarantula muscle thick filament Cryo-EM 3D-MAP===
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Three-dimensional reconstruction of tarantula myosin filaments suggests how phosphorylation may regulate myosin activity.,Alamo L, Wriggers W, Pinto A, Bartoli F, Salazar L, Zhao FQ, Craig R, Padron R J Mol Biol. 2008 Dec 26;384(4):780-97. Epub 2008 Oct 14. PMID:18951904<ref>PMID:18951904</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 3dtp" style="background-color:#fffaf0;"></div>
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(as it appears on PubMed at http://www.pubmed.gov), where 18951904 is the PubMed ID number.
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{{ABSTRACT_PUBMED_18951904}}
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==About this Structure==
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[[3dtp]] is a 6 chain structure of [[Myosin]] with sequence from [http://en.wikipedia.org/wiki/Avicularia_avicularia Avicularia avicularia], [http://en.wikipedia.org/wiki/Gallus_gallus Gallus gallus] and [http://en.wikipedia.org/wiki/Gallus_gallus,_homo_sapiens Gallus gallus, homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3DTP OCA].
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==See Also==
==See Also==
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*[[Myosin]]
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*[[Myosin 3D Structures|Myosin 3D Structures]]
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:18951904</ref><ref group="xtra">PMID:12798686</ref><ref group="xtra">PMID:17095604</ref><ref group="xtra">PMID:10338210</ref><references group="xtra"/>
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__TOC__
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</SX>
[[Category: Avicularia avicularia]]
[[Category: Avicularia avicularia]]
[[Category: Gallus gallus]]
[[Category: Gallus gallus]]
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[[Category: Gallus gallus, homo sapiens]]
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[[Category: Homo sapiens]]
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[[Category: Alamo, L.]]
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[[Category: Large Structures]]
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[[Category: Bartoli, F.]]
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[[Category: Alamo L]]
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[[Category: Craig, R.]]
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[[Category: Bartoli F]]
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[[Category: Padron, R.]]
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[[Category: Craig R]]
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[[Category: Pinto, A.]]
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[[Category: Padron R]]
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[[Category: Salazar, L.]]
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[[Category: Pinto A]]
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[[Category: Wriggers, W.]]
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[[Category: Salazar L]]
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[[Category: Zhao, F Q.]]
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[[Category: Wriggers W]]
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[[Category: Coiled-coil]]
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[[Category: Zhao FQ]]
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[[Category: Contractile protein]]
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[[Category: Essential light chain]]
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[[Category: Heavy meromyosin]]
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[[Category: Motor protein]]
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[[Category: Muscle protein]]
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[[Category: Myosin subfragment 2]]
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[[Category: Regulatory light chain]]
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[[Category: Smooth muscle]]
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Current revision

Tarantula heavy meromyosin obtained by flexible docking to Tarantula muscle thick filament Cryo-EM 3D-MAP

3dtp, resolution 20.00Å

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