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2ms7

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Revision as of 17:17, 15 August 2018

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High-resolution solid-state NMR structure of the helical signal transduction filament MAVS CARD

Structural highlights

2ms7 is a 21 chain structure with sequence from Human. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Gene:	MAVS, IPS1, KIAA1271, VISA (HUMAN)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Warning: this is a large structure, and loading might take a long time or not happen at all.

Function

[MAVS_HUMAN] Required for innate immune defense against viruses. Acts downstream of DDX58/RIG-I and IFIH1/MDA5, which detect intracellular dsRNA produced during viral replication, to coordinate pathways leading to the activation of NF-kappa-B, IRF3 and IRF7, and to the subsequent induction of antiviral cytokines such as IFN-beta and RANTES (CCL5). Peroxisomal and mitochondrial MAVS act sequentially to create an antiviral cellular state. Upon viral infection, peroxisomal MAVS induces the rapid interferon-independent expression of defense factors that provide short-term protection, whereas mitochondrial MAVS activates an interferon-dependent signaling pathway with delayed kinetics, which amplifies and stabilizes the antiviral response. May activate the same pathways following detection of extracellular dsRNA by TLR3. May protect cells from apoptosis.^[1] ^[2] ^[3] ^[4] ^[5] ^[6]

Publication Abstract from PubMed

The controlled formation of filamentous protein complexes plays a crucial role in many biological systems and represents an emerging paradigm in signal transduction. The mitochondrial antiviral signaling protein (MAVS) is a central signal transduction hub in innate immunity that is activated by a receptor-induced conversion into helical superstructures (filaments) assembled from its globular caspase activation and recruitment domain. Solid-state NMR (ssNMR) spectroscopy has become one of the most powerful techniques for atomic resolution structures of protein fibrils. However, for helical filaments, the determination of the correct symmetry parameters has remained a significant hurdle for any structural technique and could thus far not be precisely derived from ssNMR data. Here, we solved the atomic resolution structure of helical MAVS(CARD) filaments exclusively from ssNMR data. We present a generally applicable approach that systematically explores the helical symmetry space by efficient modeling of the helical structure restrained by interprotomer ssNMR distance restraints. Together with classical automated NMR structure calculation, this allowed us to faithfully determine the symmetry that defines the entire assembly. To validate our structure, we probed the protomer arrangement by solvent paramagnetic resonance enhancement, analysis of chemical shift differences relative to the solution NMR structure of the monomer, and mutagenesis. We provide detailed information on the atomic contacts that determine filament stability and describe mechanistic details on the formation of signaling-competent MAVS filaments from inactive monomers.

Structure determination of helical filaments by solid-state NMR spectroscopy.,He L, Bardiaux B, Ahmed M, Spehr J, Konig R, Lunsdorf H, Rand U, Luhrs T, Ritter C Proc Natl Acad Sci U S A. 2016 Jan 19;113(3):E272-81. doi:, 10.1073/pnas.1513119113. Epub 2016 Jan 5. PMID:26733681^[7]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Seth RB, Sun L, Ea CK, Chen ZJ. Identification and characterization of MAVS, a mitochondrial antiviral signaling protein that activates NF-kappaB and IRF 3. Cell. 2005 Sep 9;122(5):669-82. PMID:16125763 doi:10.1016/j.cell.2005.08.012
↑ Xu LG, Wang YY, Han KJ, Li LY, Zhai Z, Shu HB. VISA is an adapter protein required for virus-triggered IFN-beta signaling. Mol Cell. 2005 Sep 16;19(6):727-40. PMID:16153868 doi:S1097-2765(05)01556-X
↑ Meylan E, Curran J, Hofmann K, Moradpour D, Binder M, Bartenschlager R, Tschopp J. Cardif is an adaptor protein in the RIG-I antiviral pathway and is targeted by hepatitis C virus. Nature. 2005 Oct 20;437(7062):1167-72. Epub 2005 Sep 21. PMID:16177806 doi:nature04193
↑ Kawai T, Takahashi K, Sato S, Coban C, Kumar H, Kato H, Ishii KJ, Takeuchi O, Akira S. IPS-1, an adaptor triggering RIG-I- and Mda5-mediated type I interferon induction. Nat Immunol. 2005 Oct;6(10):981-8. Epub 2005 Aug 28. PMID:16127453 doi:10.1038/ni1243
↑ Chiu YH, Macmillan JB, Chen ZJ. RNA polymerase III detects cytosolic DNA and induces type I interferons through the RIG-I pathway. Cell. 2009 Aug 7;138(3):576-91. doi: 10.1016/j.cell.2009.06.015. Epub 2009 Jul, 23. PMID:19631370 doi:10.1016/j.cell.2009.06.015
↑ Dixit E, Boulant S, Zhang Y, Lee AS, Odendall C, Shum B, Hacohen N, Chen ZJ, Whelan SP, Fransen M, Nibert ML, Superti-Furga G, Kagan JC. Peroxisomes are signaling platforms for antiviral innate immunity. Cell. 2010 May 14;141(4):668-81. doi: 10.1016/j.cell.2010.04.018. Epub 2010 May, 6. PMID:20451243 doi:10.1016/j.cell.2010.04.018
↑ He L, Bardiaux B, Ahmed M, Spehr J, Konig R, Lunsdorf H, Rand U, Luhrs T, Ritter C. Structure determination of helical filaments by solid-state NMR spectroscopy. Proc Natl Acad Sci U S A. 2016 Jan 19;113(3):E272-81. doi:, 10.1073/pnas.1513119113. Epub 2016 Jan 5. PMID:26733681 doi:http://dx.doi.org/10.1073/pnas.1513119113

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2ms7"

@@ Line 1: / Line 1: @@
+{{Large structure}}
 ==High-resolution solid-state NMR structure of the helical signal transduction filament MAVS CARD==
 <StructureSection load='2ms7' size='340' side='right' caption='[[2ms7]], [[NMR_Ensembles_of_Models | 15 NMR models]]' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2ms7]] is a 21 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2MS7 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2MS7 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2ms7]] is a 21 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2MS7 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2MS7 FirstGlance]. <br>
-</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ms7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ms7 OCA], [http://pdbe.org/2ms7 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2ms7 RCSB], [http://www.ebi.ac.uk/pdbsum/2ms7 PDBsum]</span></td></tr>
+</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">MAVS, IPS1, KIAA1271, VISA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ms7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ms7 OCA], [http://pdbe.org/2ms7 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2ms7 RCSB], [http://www.ebi.ac.uk/pdbsum/2ms7 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2ms7 ProSAT]</span></td></tr>
 </table>
 {{Large structure}}
@@ Line 21: / Line 23: @@
 __TOC__
 </StructureSection>
+[[Category: Human]]
 [[Category: Bardiaux, B]]
 [[Category: He, L]]

2ms7

From Proteopedia

Revision as of 17:17, 15 August 2018

High-resolution solid-state NMR structure of the helical signal transduction filament MAVS CARD

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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