7rbx: Difference between revisions
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==Crystal structure of isocitrate lyase and phosphorylmutase:isocitrate lyase from Brucella melitensis biovar Abortus 2308 bound to itaconic acid== | ==Crystal structure of isocitrate lyase and phosphorylmutase:isocitrate lyase from Brucella melitensis biovar Abortus 2308 bound to itaconic acid== | ||
<StructureSection load='7rbx' size='340' side='right'caption='[[7rbx]]' scene=''> | <StructureSection load='7rbx' size='340' side='right'caption='[[7rbx]], [[Resolution|resolution]] 1.80Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7RBX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7RBX FirstGlance]. <br> | <table><tr><td colspan='2'>[[7rbx]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Brucella_abortus_2308 Brucella abortus 2308]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7RBX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7RBX FirstGlance]. <br> | ||
</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=7rbx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7rbx OCA], [https://pdbe.org/7rbx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7rbx RCSB], [https://www.ebi.ac.uk/pdbsum/7rbx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7rbx ProSAT]</span></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]] 1.8Å</td></tr> | ||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=ITN:2-METHYLIDENEBUTANEDIOIC+ACID'>ITN</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</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'>[https://proteopedia.org/fgij/fg.htm?mol=7rbx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7rbx OCA], [https://pdbe.org/7rbx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7rbx RCSB], [https://www.ebi.ac.uk/pdbsum/7rbx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7rbx ProSAT]</span></td></tr> | |||
</table> | </table> | ||
== Function == | |||
[https://www.uniprot.org/uniprot/Q2YQA0_BRUA2 Q2YQA0_BRUA2] | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Brucellosis is one of the most widespread bacterial zoonoses worldwide. Here, our aim was to identify the effector mechanisms controlling the early stages of intranasal infection with Brucella in C57BL/6 mice. During the first 48 hours of infection, alveolar macrophages (AMs) are the main cells infected in the lungs. Using RNA sequencing, we identified the aconitate decarboxylase 1 gene (Acod1; also known as Immune responsive gene 1), as one of the genes most upregulated in murine AMs in response to B. melitensis infection at 24 hours post-infection. Upregulation of Acod1 was confirmed by RT-qPCR in lungs infected with B. melitensis and B. abortus. We observed that Acod1-/- C57BL/6 mice display a higher bacterial load in their lungs than wild-type (wt) mice following B. melitensis or B. abortus infection, demonstrating that Acod1 participates in the control of pulmonary Brucella infection. The ACOD1 enzyme is mostly produced in mitochondria of macrophages, and converts cis-aconitate, a metabolite in the Krebs cycle, into itaconate. Dimethyl itaconate (DMI), a chemically-modified membrane permeable form of itaconate, has a dose-dependent inhibitory effect on Brucella growth in vitro. Interestingly, structural analysis suggests the binding of itaconate into the binding site of B. abortus isocitrate lyase. DMI does not inhibit multiplication of the isocitrate lyase deletion mutant DeltaaceA B. abortus in vitro. Finally, we observed that, unlike the wt strain, the DeltaaceA B. abortus strain multiplies similarly in wt and Acod1-/- C57BL/6 mice. These data suggest that bacterial isocitrate lyase might be a target of itaconate in AMs. | |||
Aconitate decarboxylase 1 participates in the control of pulmonary Brucella infection in mice.,Demars A, Vitali A, Comein A, Carlier E, Azouz A, Goriely S, Smout J, Flamand V, Van Gysel M, Wouters J, Abendroth J, Edwards TE, Machelart A, Hoffmann E, Brodin P, De Bolle X, Muraille E PLoS Pathog. 2021 Sep 15;17(9):e1009887. doi: 10.1371/journal.ppat.1009887., eCollection 2021 Sep. PMID:34525130<ref>PMID:34525130</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 7rbx" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Brucella abortus 2308]] | |||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: Abendroth J]] | [[Category: Abendroth J]] | ||
[[Category: Edwards TE]] | [[Category: Edwards TE]] | ||
[[Category: Structural genomic]] | [[Category: Structural genomic]] | ||
Latest revision as of 19:28, 18 October 2023
Crystal structure of isocitrate lyase and phosphorylmutase:isocitrate lyase from Brucella melitensis biovar Abortus 2308 bound to itaconic acidCrystal structure of isocitrate lyase and phosphorylmutase:isocitrate lyase from Brucella melitensis biovar Abortus 2308 bound to itaconic acid
Structural highlights
FunctionPublication Abstract from PubMedBrucellosis is one of the most widespread bacterial zoonoses worldwide. Here, our aim was to identify the effector mechanisms controlling the early stages of intranasal infection with Brucella in C57BL/6 mice. During the first 48 hours of infection, alveolar macrophages (AMs) are the main cells infected in the lungs. Using RNA sequencing, we identified the aconitate decarboxylase 1 gene (Acod1; also known as Immune responsive gene 1), as one of the genes most upregulated in murine AMs in response to B. melitensis infection at 24 hours post-infection. Upregulation of Acod1 was confirmed by RT-qPCR in lungs infected with B. melitensis and B. abortus. We observed that Acod1-/- C57BL/6 mice display a higher bacterial load in their lungs than wild-type (wt) mice following B. melitensis or B. abortus infection, demonstrating that Acod1 participates in the control of pulmonary Brucella infection. The ACOD1 enzyme is mostly produced in mitochondria of macrophages, and converts cis-aconitate, a metabolite in the Krebs cycle, into itaconate. Dimethyl itaconate (DMI), a chemically-modified membrane permeable form of itaconate, has a dose-dependent inhibitory effect on Brucella growth in vitro. Interestingly, structural analysis suggests the binding of itaconate into the binding site of B. abortus isocitrate lyase. DMI does not inhibit multiplication of the isocitrate lyase deletion mutant DeltaaceA B. abortus in vitro. Finally, we observed that, unlike the wt strain, the DeltaaceA B. abortus strain multiplies similarly in wt and Acod1-/- C57BL/6 mice. These data suggest that bacterial isocitrate lyase might be a target of itaconate in AMs. Aconitate decarboxylase 1 participates in the control of pulmonary Brucella infection in mice.,Demars A, Vitali A, Comein A, Carlier E, Azouz A, Goriely S, Smout J, Flamand V, Van Gysel M, Wouters J, Abendroth J, Edwards TE, Machelart A, Hoffmann E, Brodin P, De Bolle X, Muraille E PLoS Pathog. 2021 Sep 15;17(9):e1009887. doi: 10.1371/journal.ppat.1009887., eCollection 2021 Sep. PMID:34525130[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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