6dik: Difference between revisions
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<StructureSection load='6dik' size='340' side='right'caption='[[6dik]], [[Resolution|resolution]] 1.93Å' scene=''> | <StructureSection load='6dik' size='340' side='right'caption='[[6dik]], [[Resolution|resolution]] 1.93Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[6dik]] is a 2 chain structure with sequence from [ | <table><tr><td colspan='2'>[[6dik]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Bothrops_jararacussu Bothrops jararacussu]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6DIK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6DIK FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BCT:BICARBONATE+ION'>BCT</scene>, <scene name='pdbligand=EOH:ETHANOL'>EOH</scene>, <scene name='pdbligand=GKP:(2R,3R)-2,3-bis{[(2E)-3-(3,4-dihydroxyphenyl)prop-2-enoyl]oxy}butanedioic+acid'>GKP</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene> | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.93Å</td></tr> | ||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BCT:BICARBONATE+ION'>BCT</scene>, <scene name='pdbligand=EOH:ETHANOL'>EOH</scene>, <scene name='pdbligand=GKP:(2R,3R)-2,3-bis{[(2E)-3-(3,4-dihydroxyphenyl)prop-2-enoyl]oxy}butanedioic+acid'>GKP</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=6dik FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6dik OCA], [https://pdbe.org/6dik PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6dik RCSB], [https://www.ebi.ac.uk/pdbsum/6dik PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6dik ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[ | [https://www.uniprot.org/uniprot/PA2H1_BOTJR PA2H1_BOTJR] Snake venom phospholipase A2 homolog that lacks enzymatic activity. Shows local myotoxic activity (PubMed:11018293, PubMed:12079495, PubMed:31906173). Induces inflammation, since it induces edema and leukocytes infiltration (PubMed:11018293, PubMed:31906173). In addition, it induces NLRP3 NLRP3, ASC (PYCARD), caspase-1 (CASP1), and IL-1beta (IL1B) gene expression in the gastrocnemius muscle, showing that it is able to activate NLRP3 inflammasome (PubMed:31906173). It also damages artificial and myoblast membranes by a calcium-independent mechanism, has bactericidal activity, and induces neuromuscular blockade (PubMed:27531710). A model of myotoxic mechanism has been proposed: an apo Lys49-PLA2 is activated by the entrance of a hydrophobic molecule (e.g. fatty acid) at the hydrophobic channel of the protein leading to a reorientation of a monomer (PubMed:27531710) (By similarity). This reorientation causes a transition between 'inactive' to 'active' states, causing alignment of C-terminal and membrane-docking sites (MDoS) side-by-side and putting the membrane-disruption sites (MDiS) in the same plane, exposed to solvent and in a symmetric position for both monomers (PubMed:27531710) (By similarity). The MDoS region stabilizes the toxin on membrane by the interaction of charged residues with phospholipid head groups (PubMed:27531710) (By similarity). Subsequently, the MDiS region destabilizes the membrane with penetration of hydrophobic residues (PubMed:27531710) (By similarity). This insertion causes a disorganization of the membrane, allowing an uncontrolled influx of ions (i.e. calcium and sodium), and eventually triggering irreversible intracellular alterations and cell death (PubMed:27531710) (By similarity).[UniProtKB:I6L8L6]<ref>PMID:11018293</ref> <ref>PMID:11829743</ref> <ref>PMID:12079495</ref> <ref>PMID:17157889</ref> <ref>PMID:17346668</ref> <ref>PMID:18160090</ref> <ref>PMID:27531710</ref> <ref>PMID:3176051</ref> <ref>PMID:31906173</ref> | ||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
== Publication Abstract from PubMed == | == Publication Abstract from PubMed == | ||
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</div> | </div> | ||
<div class="pdbe-citations 6dik" style="background-color:#fffaf0;"></div> | <div class="pdbe-citations 6dik" style="background-color:#fffaf0;"></div> | ||
==See Also== | |||
*[[Phospholipase A2 homolog|Phospholipase A2 homolog]] | |||
== References == | == References == | ||
<references/> | <references/> | ||
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[[Category: Bothrops jararacussu]] | [[Category: Bothrops jararacussu]] | ||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: Borges | [[Category: Borges RJ]] | ||
[[Category: Cardoso | [[Category: Cardoso FF]] | ||
[[Category: Salvador | [[Category: Salvador GHM]] | ||
