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3rc4

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Revision as of 22:05, 4 August 2016

Molecular mechanisms of viral and host-cell substrate recognition by HCV NS3/4A protease

Structural highlights

3rc4 is a 2 chain structure with sequence from Hepatitis c virus subtype 1a. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Related:	3rc6, 3rc5
Gene:	NS3 (Hepatitis C virus subtype 1a)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

[TCAM1_HUMAN] Herpetic encephalitis. Herpes simplex encephalitis 4 (HSE4) [MIM:614850]: A rare complication of human herpesvirus 1 (HHV-1) infection, occurring in only a small minority of HHV-1 infected individuals. HSE is characterized by hemorrhagic necrosis of parts of the temporal and frontal lobes. Onset is over several days and involves fever, headache, seizures, stupor, and often coma, frequently with a fatal outcome. Note=Disease susceptibility is associated with variations affecting the gene represented in this entry.^[1]

Function

[TCAM1_HUMAN] Involved in innate immunity against invading pathogens. Adapter used by TLR3 and TLR4 (through TICAM2) to mediate NF-kappa-B and interferon-regulatory factor (IRF) activation, and to induce apoptosis. Ligand binding to these receptors results in TRIF recruitment through its TIR domain. Distinct protein-interaction motifs allow recruitment of the effector proteins TBK1, TRAF6 and RIPK1, which in turn, lead to the activation of transcription factors IRF3 and IRF7, NF-kappa-B and FADD respectively.^[2] ^[3] ^[4]

Publication Abstract from PubMed

Hepatitis C NS3/4A protease is a prime therapeutic target responsible for cleaving the viral polyprotein at junctions 3-4A, 4A4B, 4B5A and 5A5B, and two host-cell adapter proteins of the innate immune response, TRIF and MAVS. In this study, NS3/4A crystal structures of both host-cell cleavage sites are determined and compared to the crystal structures of viral substrates. Two distinct protease conformations are observed and correlate with substrate specificity: (1) 3-4A, 4A4B, 5A5B and MAVS, which are processed more efficiently by the protease, form extensive electrostatic networks when in complex with the protease and (2) TRIF and 4B5A, which contain polyproline motifs in their full-length sequences, do not form electrostatic networks in their crystal complexes. These findings provide mechanistic insights into NS3/4A substrate recognition, which may assist in a more rational approach to inhibitor design in the face of the rapid acquisition of resistance.

Molecular mechanisms of viral and host-cell substrate recognition by HCV NS3/4A protease.,Romano KP, Laine JM, Deveau LM, Cao H, Massi F, Schiffer CA J Virol. 2011 Apr 20. PMID:21507982^[5]

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

References

↑ Sancho-Shimizu V, Perez de Diego R, Lorenzo L, Halwani R, Alangari A, Israelsson E, Fabrega S, Cardon A, Maluenda J, Tatematsu M, Mahvelati F, Herman M, Ciancanelli M, Guo Y, AlSum Z, Alkhamis N, Al-Makadma AS, Ghadiri A, Boucherit S, Plancoulaine S, Picard C, Rozenberg F, Tardieu M, Lebon P, Jouanguy E, Rezaei N, Seya T, Matsumoto M, Chaussabel D, Puel A, Zhang SY, Abel L, Al-Muhsen S, Casanova JL. Herpes simplex encephalitis in children with autosomal recessive and dominant TRIF deficiency. J Clin Invest. 2011 Dec;121(12):4889-902. doi: 10.1172/JCI59259. Epub 2011 Nov, 21. PMID:22105173 doi:10.1172/JCI59259
↑ Yamamoto M, Sato S, Mori K, Hoshino K, Takeuchi O, Takeda K, Akira S. Cutting edge: a novel Toll/IL-1 receptor domain-containing adapter that preferentially activates the IFN-beta promoter in the Toll-like receptor signaling. J Immunol. 2002 Dec 15;169(12):6668-72. PMID:12471095
↑ Oshiumi H, Matsumoto M, Funami K, Akazawa T, Seya T. TICAM-1, an adaptor molecule that participates in Toll-like receptor 3-mediated interferon-beta induction. Nat Immunol. 2003 Feb;4(2):161-7. Epub 2003 Jan 21. PMID:12539043 doi:10.1038/ni886
↑ Han KJ, Su X, Xu LG, Bin LH, Zhang J, Shu HB. Mechanisms of the TRIF-induced interferon-stimulated response element and NF-kappaB activation and apoptosis pathways. J Biol Chem. 2004 Apr 9;279(15):15652-61. Epub 2004 Jan 22. PMID:14739303 doi:10.1074/jbc.M311629200
↑ Romano KP, Laine JM, Deveau LM, Cao H, Massi F, Schiffer CA. Molecular mechanisms of viral and host-cell substrate recognition by HCV NS3/4A protease. J Virol. 2011 Apr 20. PMID:21507982 doi:10.1128/JVI.00377-11

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3rc4"

@@ Line 1: / Line 1: @@
 ==Molecular mechanisms of viral and host-cell substrate recognition by HCV NS3/4A protease==
 <StructureSection load='3rc4' size='340' side='right' caption='[[3rc4]], [[Resolution|resolution]] 1.50&Aring;' scene=''>
@@ Line 6: / Line 7: @@
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3rc6|3rc6]], [[3rc5|3rc5]]</td></tr>
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">NS3 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=31646 Hepatitis C virus subtype 1a])</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=3rc4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3rc4 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3rc4 RCSB], [http://www.ebi.ac.uk/pdbsum/3rc4 PDBsum]</span></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=3rc4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3rc4 OCA], [http://pdbe.org/3rc4 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3rc4 RCSB], [http://www.ebi.ac.uk/pdbsum/3rc4 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3rc4 ProSAT]</span></td></tr>
 </table>
 == Disease ==
@@ Line 20: / Line 21: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 3rc4" style="background-color:#fffaf0;"></div>
 == References ==
 <references/>

3rc4

From Proteopedia

Revision as of 22:05, 4 August 2016

Molecular mechanisms of viral and host-cell substrate recognition by HCV NS3/4A protease

Structural highlights

Disease

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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