View source for 3tlo


==Crystal structure of HCoV-NL63 3C-like protease==
<StructureSection load='3tlo' size='340' side='right'caption='[[3tlo]], [[Resolution|resolution]] 1.60&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3tlo]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Human_coronavirus_NL63 Human coronavirus NL63]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3TLO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3TLO FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.6&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</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=3tlo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3tlo OCA], [https://pdbe.org/3tlo PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3tlo RCSB], [https://www.ebi.ac.uk/pdbsum/3tlo PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3tlo ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/R1A_CVHNL R1A_CVHNL] The papain-like proteinase 1 (PLP1) and papain-like proteinase 2 (PLP2) are responsible for the cleavages located at the N-terminus of the replicase polyprotein. In addition, PLP2 possesses a deubiquitinating/deISGylating activity and processes both 'Lys-48'- and 'Lys-63'-linked polyubiquitin chains from cellular substrates. PLP2 also antagonizes innate immune induction of type I interferon by blocking the nuclear translocation of host IRF-3.  The main proteinase 3CL-PRO is responsible for the majority of cleavages as it cleaves the C-terminus of replicase polyprotein at 11 sites. Recognizes substrates containing the core sequence [ILMVF]-Q-|-[SGACN]. Inhibited by the substrate-analog Cbz-Val-Asn-Ser-Thr-Leu-Gln-CMK. Also contains an ADP-ribose-1''-phosphate (ADRP)-binding function (By similarity).  Nsp7-nsp8 hexadecamer may possibly confer processivity to the polymerase, maybe by binding to dsRNA or by producing primers utilized by the latter (By similarity).  Nsp9 is a ssRNA-binding protein (By similarity).
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</StructureSection>
[[Category: Human coronavirus NL63]]
[[Category: Large Structures]]
[[Category: Chuck CP]]
[[Category: Wong KB]]