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| - | {{STRUCTURE_3r66| PDB=3r66 | SCENE= }}
| + | ==Crystal structure of human ISG15 in complex with NS1 N-terminal region from influenza virus B, Northeast Structural Genomics Consortium Target IDs HX6481, HR2873, and OR2== |
| - | ===Crystal structure of human ISG15 in complex with NS1 N-terminal region from influenza virus B, Northeast Structural Genomics Consortium Target IDs HX6481, HR2873, and OR2===
| + | <StructureSection load='3r66' size='340' side='right' caption='[[3r66]], [[Resolution|resolution]] 2.30Å' scene=''> |
| - | | + | == Structural highlights == |
| - | ==Function== | + | <table><tr><td colspan='2'>[[3r66]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3R66 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3R66 FirstGlance]. <br> |
| - | [[http://www.uniprot.org/uniprot/NS1_INBLE NS1_INBLE]] Binds and inhibits the ubiquitin-like protein G1P2/ISG15, which is an early antiviral protein. Inhibits IRF-3 nuclear translocation and activation. Inhibits IFN-beta promoter activation; this inhibition is not dsRNA-binding dependent Prevents EIF2AK2/PKR activation, either by binding double strand RNA or by interacting directly with EIF2AK2/PKR. Also binds poly(A) and U6 snRNA. Suppresses the RNA silencing-based antiviral response in Drosophila cells.<ref>PMID:15479798</ref> [[http://www.uniprot.org/uniprot/ISG15_HUMAN ISG15_HUMAN]] Ubiquitin-like protein that is conjugated to intracellular target proteins after IFN-alpha or IFN-beta stimulation. Its enzymatic pathway is partially distinct from that of ubiquitin, differing in substrate specificity and interaction with ligating enzymes. ISG15 conjugation pathway uses a dedicated E1 enzyme, but seems to converge with the Ub conjugation pathway at the level of a specific E2 enzyme. Targets include STAT1, SERPINA3G/SPI2A, JAK1, MAPK3/ERK1, PLCG1, EIF2AK2/PKR, MX1/MxA, and RIG-1. Deconjugated by USP18/UBP43. Shows specific chemotactic activity towards neutrophils and activates them to induce release of eosinophil chemotactic factors. May serve as a trans-acting binding factor directing the association of ligated target proteins to intermediate filaments. May also be involved in autocrine, paracrine and endocrine mechanisms, as in cell-to-cell signaling, possibly partly by inducing IFN-gamma secretion by monocytes and macrophages. Seems to display antiviral activity during viral infections.<ref>PMID:1373138</ref> <ref>PMID:7526157</ref> <ref>PMID:8550581</ref> <ref>PMID:2005397</ref> <ref>PMID:16254333</ref> <ref>PMID:16009940</ref> In response to IFN-tau secreted by the conceptus, may ligate to and regulate proteins involved in the release of prostaglandin F2-alpha (PGF), and thus prevent lysis of the corpus luteum and maintain the pregnancy (By similarity).<ref>PMID:1373138</ref> <ref>PMID:7526157</ref> <ref>PMID:8550581</ref> <ref>PMID:2005397</ref> <ref>PMID:16254333</ref> <ref>PMID:16009940</ref> | + | </td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=CSD:3-SULFINOALANINE'>CSD</scene></td></tr> |
| - | | + | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1xeq|1xeq]], [[1z2m|1z2m]]</td></tr> |
| - | ==About this Structure== | + | <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=3r66 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3r66 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3r66 RCSB], [http://www.ebi.ac.uk/pdbsum/3r66 PDBsum]</span></td></tr> |
| - | [[3r66]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [http://en.wikipedia.org/wiki/Influenza_b_virus Influenza b virus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3R66 OCA].
| + | </table> |
| - | | + | __TOC__ |
| - | ==Reference== | + | </StructureSection> |
| - | <references group="xtra"/><references/> | + | [[Category: Guan, R]] |
| - | [[Category: Homo sapiens]]
| + | [[Category: Krug, R M]] |
| - | [[Category: Influenza b virus]]
| + | [[Category: Ma, L C]] |
| - | [[Category: Guan, R.]] | + | [[Category: Montelione, G T]] |
| - | [[Category: Krug, R M.]] | + | [[Category: Structural genomic]] |
| - | [[Category: Ma, L C.]] | + | |
| - | [[Category: Montelione, G T.]] | + | |
| - | [[Category: NESG, Northeast Structural Genomics Consortium.]] | + | |
| | [[Category: Innate immunity]] | | [[Category: Innate immunity]] |
| | [[Category: Isg15 conjugation]] | | [[Category: Isg15 conjugation]] |
| | [[Category: Nesg]] | | [[Category: Nesg]] |
| - | [[Category: Northeast structural genomics consortium]] | |
| | [[Category: Psi-biology]] | | [[Category: Psi-biology]] |
| - | [[Category: Structural genomic]] | |
| | [[Category: Viral protein-antiviral protein complex]] | | [[Category: Viral protein-antiviral protein complex]] |
