View source for 8xpi


==Structure of the C-terminal domain of nsp4 from PEDV==
<StructureSection load='8xpi' size='340' side='right'caption='[[8xpi]], [[Resolution|resolution]] 1.84&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[8xpi]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Porcine_epidemic_diarrhea_virus Porcine epidemic diarrhea virus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8XPI OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8XPI 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]] 1.84&#8491;</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=8xpi FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8xpi OCA], [https://pdbe.org/8xpi PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8xpi RCSB], [https://www.ebi.ac.uk/pdbsum/8xpi PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8xpi ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/A0A0P0TE07_9ALPC A0A0P0TE07_9ALPC] Forms a primer, NSP9-pU, which is utilized by the polymerase for the initiation of RNA chains. Interacts with ribosome signal recognition particle RNA (SRP). Together with NSP8, suppress protein integration into the cell membrane, thereby disrupting host immune defenses.[ARBA:ARBA00043928]  RNA-directed RNA polymerase that catalyzes the transcription of viral genomic and subgenomic RNAs. Acts in complex with nsp7 and nsp8 to transcribe both the minus and positive strands of genomic RNA. The kinase-like NiRAN domain of NSP12 attaches one or more nucleotides to the amino terminus of NSP9, forming a covalent RNA-protein intermediate that serves as transcription/replication primer. Subgenomic RNAs (sgRNAs) are formed by discontinuous transcription: The polymerase has the ability to pause at transcription-regulating sequences (TRS) and jump to the leader TRS, resulting in a major deletion. This creates a series of subgenomic RNAs that are replicated, transcribed and translated. In addition, Nsp12 is a subunit of the viral RNA capping enzyme that catalyzes the RNA guanylyltransferase reaction for genomic and sub-genomic RNAs. Subsequently, the NiRAN domain transfers RNA to GDP, and forms the core cap structure GpppA-RNA.[ARBA:ARBA00043918]
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</StructureSection>
[[Category: Large Structures]]
[[Category: Porcine epidemic diarrhea virus]]
[[Category: Peng GQ]]
[[Category: Shi YJ]]
[[Category: Zhang D]]
[[Category: Zhang ZT]]