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New page: left|200px<br /><applet load="1jx2" size="450" color="white" frame="true" align="right" spinBox="true" caption="1jx2, resolution 2.30Å" /> '''CRYSTAL STRUCTURE OF... |
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== | ==CRYSTAL STRUCTURE OF THE NUCLEOTIDE-FREE DYNAMIN A GTPASE DOMAIN, DETERMINED AS MYOSIN FUSION== | ||
Dynamins form a family of multidomain GTPases involved in endocytosis, vesicle trafficking and maintenance of mitochondrial morphology. In | <StructureSection load='1jx2' size='340' side='right'caption='[[1jx2]], [[Resolution|resolution]] 2.30Å' scene=''> | ||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[1jx2]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Dictyostelium_discoideum Dictyostelium discoideum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1JX2 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1JX2 FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.3Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=BGC:BETA-D-GLUCOSE'>BGC</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1jx2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1jx2 OCA], [https://pdbe.org/1jx2 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1jx2 RCSB], [https://www.ebi.ac.uk/pdbsum/1jx2 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1jx2 ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/DYNA_DICDI DYNA_DICDI] Function in membrane trafficking processes along the endo-lysosomal pathway.[https://www.uniprot.org/uniprot/MYS2_DICDI MYS2_DICDI] Myosin is a protein that binds to actin and has ATPase activity that is activated by actin. | |||
== Evolutionary Conservation == | |||
[[Image:Consurf_key_small.gif|200px|right]] | |||
Check<jmol> | |||
<jmolCheckbox> | |||
<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/jx/1jx2_consurf.spt"</scriptWhenChecked> | |||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked> | |||
<text>to colour the structure by Evolutionary Conservation</text> | |||
</jmolCheckbox> | |||
</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=1jx2 ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Dynamins form a family of multidomain GTPases involved in endocytosis, vesicle trafficking and maintenance of mitochondrial morphology. In contrast to the classical switch GTPases, a force-generating function has been suggested for dynamins. Here we report the 2.3 A crystal structure of the nucleotide-free and GDP-bound GTPase domain of Dictyostelium discoideum dynamin A. The GTPase domain is the most highly conserved region among dynamins. The globular structure contains the G-protein core fold, which is extended from a six-stranded beta-sheet to an eight-stranded one by a 55 amino acid insertion. This topologically unique insertion distinguishes dynamins from other subfamilies of GTP-binding proteins. An additional N-terminal helix interacts with the C-terminal helix of the GTPase domain, forming a hydrophobic groove, which could be occupied by C-terminal parts of dynamin not present in our construct. The lack of major conformational changes between the nucleotide-free and the GDP-bound state suggests that mechanochemical rearrangements in dynamin occur during GTP binding, GTP hydrolysis or phosphate release and are not linked to loss of GDP. | |||
Crystal structure of a dynamin GTPase domain in both nucleotide-free and GDP-bound forms.,Niemann HH, Knetsch ML, Scherer A, Manstein DJ, Kull FJ EMBO J. 2001 Nov 1;20(21):5813-21. PMID:11689422<ref>PMID:11689422</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 1jx2" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Myosin 3D Structures|Myosin 3D Structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Dictyostelium discoideum]] | [[Category: Dictyostelium discoideum]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: Knetsch | [[Category: Knetsch MLW]] | ||
[[Category: Kull | [[Category: Kull FJ]] | ||
[[Category: Manstein | [[Category: Manstein DJ]] | ||
[[Category: Niemann | [[Category: Niemann HH]] | ||
[[Category: Scherer | [[Category: Scherer A]] | ||
Latest revision as of 09:51, 30 October 2024
CRYSTAL STRUCTURE OF THE NUCLEOTIDE-FREE DYNAMIN A GTPASE DOMAIN, DETERMINED AS MYOSIN FUSIONCRYSTAL STRUCTURE OF THE NUCLEOTIDE-FREE DYNAMIN A GTPASE DOMAIN, DETERMINED AS MYOSIN FUSION
Structural highlights
FunctionDYNA_DICDI Function in membrane trafficking processes along the endo-lysosomal pathway.MYS2_DICDI Myosin is a protein that binds to actin and has ATPase activity that is activated by actin. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedDynamins form a family of multidomain GTPases involved in endocytosis, vesicle trafficking and maintenance of mitochondrial morphology. In contrast to the classical switch GTPases, a force-generating function has been suggested for dynamins. Here we report the 2.3 A crystal structure of the nucleotide-free and GDP-bound GTPase domain of Dictyostelium discoideum dynamin A. The GTPase domain is the most highly conserved region among dynamins. The globular structure contains the G-protein core fold, which is extended from a six-stranded beta-sheet to an eight-stranded one by a 55 amino acid insertion. This topologically unique insertion distinguishes dynamins from other subfamilies of GTP-binding proteins. An additional N-terminal helix interacts with the C-terminal helix of the GTPase domain, forming a hydrophobic groove, which could be occupied by C-terminal parts of dynamin not present in our construct. The lack of major conformational changes between the nucleotide-free and the GDP-bound state suggests that mechanochemical rearrangements in dynamin occur during GTP binding, GTP hydrolysis or phosphate release and are not linked to loss of GDP. Crystal structure of a dynamin GTPase domain in both nucleotide-free and GDP-bound forms.,Niemann HH, Knetsch ML, Scherer A, Manstein DJ, Kull FJ EMBO J. 2001 Nov 1;20(21):5813-21. PMID:11689422[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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