3kwv: Difference between revisions
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==Structural basis for the unfolding of anthrax lethal factor by protective antigen oligomers== | ==Structural basis for the unfolding of anthrax lethal factor by protective antigen oligomers== | ||
<StructureSection load='3kwv' size='340' side='right' caption='[[3kwv]], [[Resolution|resolution]] 3.10Å' scene=''> | <StructureSection load='3kwv' size='340' side='right'caption='[[3kwv]], [[Resolution|resolution]] 3.10Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[3kwv]] is a 6 chain structure with sequence from [ | <table><tr><td colspan='2'>[[3kwv]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/"bacillus_cereus_var._anthracis"_(cohn_1872)_smith_et_al._1946 "bacillus cereus var. anthracis" (cohn 1872) smith et al. 1946]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3KWV OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3KWV FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene></td></tr> | ||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">pagA ([ | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">pagA ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1392 "Bacillus cereus var. anthracis" (Cohn 1872) Smith et al. 1946]), lef ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1392 "Bacillus cereus var. anthracis" (Cohn 1872) Smith et al. 1946])</td></tr> | ||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Hydrolase Hydrolase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.24.83 3.4.24.83] </span></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=3kwv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3kwv OCA], [https://pdbe.org/3kwv PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3kwv RCSB], [https://www.ebi.ac.uk/pdbsum/3kwv PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3kwv ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[[ | [[https://www.uniprot.org/uniprot/PAG_BACAN PAG_BACAN]] One of the three proteins composing the anthrax toxin, the agent which infects many mammalian species and that may cause death. PA binds to a receptor (ATR) in sensitive eukaryotic cells, thereby facilitating the translocation of the enzymatic toxin components, edema factor and lethal factor, across the target cell membrane. PA associated with LF causes death when injected, PA associated with EF produces edema. PA induces immunity to infection with anthrax. [[https://www.uniprot.org/uniprot/LEF_BACAN LEF_BACAN]] One of the three proteins composing the anthrax toxin, the agent which infects many mammalian species and that may cause death. LF is the lethal factor that, when associated with PA, causes death. LF is not toxic by itself. It is a protease that cleaves the N-terminal of most dual specificity mitogen-activated protein kinase kinases (MAPKKs or MAP2Ks) (except for MAP2K5). Cleavage invariably occurs within the N-terminal proline-rich region preceding the kinase domain, thus disrupting a sequence involved in directing specific protein-protein interactions necessary for the assembly of signaling complexes. There may be other cytosolic targets of LF involved in cytotoxicity. The proteasome may mediate a toxic process initiated by LF in the cell cytosol involving degradation of unidentified molecules that are essential for macrophage homeostasis. This is an early step in LeTx intoxication, but it is downstream of the cleavage by LF of MEK1 or other putative substrates.<ref>PMID:9563949</ref> <ref>PMID:9703991</ref> <ref>PMID:10475971</ref> <ref>PMID:11104681</ref> <ref>PMID:10338520</ref> | ||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
== Publication Abstract from PubMed == | == Publication Abstract from PubMed == | ||
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==See Also== | ==See Also== | ||
*[[Anthrax | *[[Anthrax lethal factor 3D structures|Anthrax lethal factor 3D structures]] | ||
== References == | == References == | ||
<references/> | <references/> | ||
| Line 29: | Line 28: | ||
</StructureSection> | </StructureSection> | ||
[[Category: Hydrolase]] | [[Category: Hydrolase]] | ||
[[Category: Large Structures]] | |||
[[Category: Feld, G K]] | [[Category: Feld, G K]] | ||
[[Category: Kintzer, A F]] | [[Category: Kintzer, A F]] | ||