7zys

==Crystal Structure of Unlinked NS2B-NS3 Protease from Zika Virus in Complex with Inhibitor MI-2227==

<StructureSection load='7zys' size='340' side='right'caption='[[7zys]], [[Resolution|resolution]] 1.26&Aring;' scene=''>

<table><tr><td colspan='2'>[[7zys]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Zika_virus Zika virus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7ZYS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7ZYS FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=KNR:1-[(8~{R},15~{S},18~{S})-18-(4-azanylbutyl)-15-butyl-4,7,14,17,20-pentakis(oxidanylidene)-3,6,13,16,19-pentazabicyclo[20.3.1]hexacosa-1(26),22,24-trien-8-yl]guanidine'>KNR</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=7zys FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7zys OCA], [https://pdbe.org/7zys PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7zys RCSB], [https://www.ebi.ac.uk/pdbsum/7zys PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7zys ProSAT]</span></td></tr>

== Function ==

[[https://www.uniprot.org/uniprot/POLG_ZIKV POLG_ZIKV]] Protein C: Encapsulates the genomic RNA.[UniProtKB:P17763] prM: Acts as a chaperone for envelope protein E during intracellular virion assembly by masking and inactivating envelope protein E fusion peptide. prM is matured in the last step of virion assembly, presumably to avoid catastrophic activation of the viral fusion peptide induced by the acidic pH of the trans-Golgi network. After cleavage by host furin, the pr peptide is released in the extracellular medium and small envelope protein M and envelope protein E homodimers are dissociated.[UniProtKB:P17763] Envelope protein E: Binding to host cell surface receptor is followed by virus internalization through clathrin-mediated endocytosis. Envelope protein E is subsequently involved in membrane fusion between virion and host late endosomes. Synthesized as a homodimer with prM which acts as a chaperone for envelope protein E. After cleavage of prM, envelope protein E dissociate from small envelope protein M and homodimerizes.[UniProtKB:P17763] Non-structural protein 1: Involved in virus replication and regulation of the innate immune response.[UniProtKB:P17763] Non-structural protein 2A: May be involved viral RNA replication and capsid assembly.[UniProtKB:P09732] Non-structural protein 4A: Induces host endoplasmic reticulum membrane rearrangements leading to the formation of virus-induced membranous vesicles hosting the dsRNA and polymerase, functioning as a replication complex. NS4A might also regulate the ATPase activity of the helicase region of Serine protease NS3 chain.[UniProtKB:P17763] Peptide 2k: Functions as a signal peptide for NS4B and is required for the interferon antagonism activity of the latter.[UniProtKB:P17763] Non-structural protein 4B: Inhibits interferon (IFN)-induced host STAT1 phosphorylation and nuclear translocation, thereby preventing the establishment of cellular antiviral state by blocking the IFN-alpha/beta pathway.[UniProtKB:P17763]

[[Category: Zika virus]]

[[Category: Steinmetzer T]]