1qu6

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<StructureSection load='1qu6' size='340' side='right'caption='[[1qu6]], [[NMR_Ensembles_of_Models | 21 NMR models]]' scene=''>
<StructureSection load='1qu6' size='340' side='right'caption='[[1qu6]], [[NMR_Ensembles_of_Models | 21 NMR models]]' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[1qu6]] is a 1 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=1QU6 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1QU6 FirstGlance]. <br>
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<table><tr><td colspan='2'>[[1qu6]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Human Human]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QU6 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1QU6 FirstGlance]. <br>
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</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=1qu6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qu6 OCA], [http://pdbe.org/1qu6 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1qu6 RCSB], [http://www.ebi.ac.uk/pdbsum/1qu6 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1qu6 ProSAT]</span></td></tr>
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</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=1qu6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qu6 OCA], [https://pdbe.org/1qu6 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1qu6 RCSB], [https://www.ebi.ac.uk/pdbsum/1qu6 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1qu6 ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
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[[http://www.uniprot.org/uniprot/E2AK2_HUMAN E2AK2_HUMAN]] Following activation by double-stranded RNA in the presence of ATP, the kinase becomes autophosphorylated and can catalyze the phosphorylation of the translation initiation factor EIF2S1, which leads to an inhibition of the initiation of protein synthesis. Double-stranded RNA is generated during the course of a viral infection. In addition to serine/threonine-protein kinase activity, also has tyrosine-protein kinase activity: phosphorylates CDK1 upon DNA damage. CDK1 phosphorylation triggers CDK1 polyubiquitination and subsequent proteolysis, thus leading to G2 arrest.<ref>PMID:20395957</ref>
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[[https://www.uniprot.org/uniprot/E2AK2_HUMAN E2AK2_HUMAN]] Following activation by double-stranded RNA in the presence of ATP, the kinase becomes autophosphorylated and can catalyze the phosphorylation of the translation initiation factor EIF2S1, which leads to an inhibition of the initiation of protein synthesis. Double-stranded RNA is generated during the course of a viral infection. In addition to serine/threonine-protein kinase activity, also has tyrosine-protein kinase activity: phosphorylates CDK1 upon DNA damage. CDK1 phosphorylation triggers CDK1 polyubiquitination and subsequent proteolysis, thus leading to G2 arrest.<ref>PMID:20395957</ref>
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]

Revision as of 10:04, 15 September 2021

STRUCTURE OF THE DOUBLE-STRANDED RNA-BINDING DOMAIN OF THE PROTEIN KINASE PKR REVEALS THE MOLECULAR BASIS OF ITS DSRNA-MEDIATED ACTIVATION

PDB ID 1qu6

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