4pjk: Difference between revisions
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== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[4pjk]] 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=4PJK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4PJK FirstGlance]. <br> | <table><tr><td colspan='2'>[[4pjk]] 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=4PJK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4PJK FirstGlance]. <br> | ||
</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=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene></td></tr> | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.15Å</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=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</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=4pjk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4pjk OCA], [https://pdbe.org/4pjk PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4pjk RCSB], [https://www.ebi.ac.uk/pdbsum/4pjk PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4pjk ProSAT]</span></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=4pjk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4pjk OCA], [https://pdbe.org/4pjk PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4pjk RCSB], [https://www.ebi.ac.uk/pdbsum/4pjk PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4pjk ProSAT]</span></td></tr> | ||
</table> | </table> | ||
Latest revision as of 15:23, 20 December 2023
Dicty myosin II R238E.E459R mutant (with ADP.Pi) in the Pi release stateDicty myosin II R238E.E459R mutant (with ADP.Pi) in the Pi release state
Structural highlights
FunctionMYS2_DICDI Myosin is a protein that binds to actin and has ATPase activity that is activated by actin. Publication Abstract from PubMedFundamental to cellular processes are directional movements driven by molecular motors. A common theme for these and other molecular machines driven by ATP is that controlled release of hydrolysis products is essential for using the chemical energy efficiently. Mechanochemical transduction by myosin motors on actin is coupled to unknown structural changes that result in the sequential release of inorganic phosphate (Pi) and MgADP. We present here a myosin structure possessing an actin-binding interface and a tunnel (back door) that creates an escape route for Pi with a minimal rotation of the myosin lever arm that drives movements. We propose that this state represents the beginning of the powerstroke on actin and that Pi translocation from the nucleotide pocket triggered by actin binding initiates myosin force generation. This elucidates how actin initiates force generation and movement and may represent a strategy common to many molecular machines. How actin initiates the motor activity of Myosin.,Llinas P, Isabet T, Song L, Ropars V, Zong B, Benisty H, Sirigu S, Morris C, Kikuti C, Safer D, Sweeney HL, Houdusse A Dev Cell. 2015 May 26;33(4):401-12. doi: 10.1016/j.devcel.2015.03.025. Epub 2015 , Apr 30. PMID:25936506[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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