Host Protein General Information (ID: PT0090)
  Protein Name
5'-3' exoribonuclease 2 (XRN1)
  Gene Name
XRN1
  Host Species
Homo sapiens
  Uniprot Entry Name
XRN1_HUMAN
  Protein Families
5'-3' exonuclease family
  EC Number
3.1.13.-
  Subcellular Location
Cytoplasm
  External Link
NCBI Gene ID
54464
Uniprot ID
Q8IZH2
Ensembl ID
ENSG00000114127
HGNC ID
HGNC:30654
  Function in Host
Major 5'-3' exoribonuclease involved in mRNA decay. Requiredfor the 5'-3'-processing of the G4 tetraplex-containing DNA and RNAsubstrates. The kinetic of hydrolysis is faster for G4 RNA tetraplexthan for G4 DNA tetraplex and monomeric RNA tetraplex. Binds to RNA andDNA. Plays a role in replication-dependent histone mRNAdegradation. May act as a tumor suppressor protein in osteogenicsarcoma (OGS). [1]
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  Related KEGG Pathway
Ribosome biogenesis in eukaryotes hsa03008            Pathway Map 
RNA degradation hsa03018            Pathway Map 
  3D Structure

Function of This Protein During Virus Infection
Virus NameSARS-COV-2 Protein Function Anti-viral [2]
Infected TissueLung Infection Time7-9 Days
Infected CellCalu-3 Cells (Human epithelial cell line) Cellosaurus IDCVCL_0609 
Method DescriptionTo detect the role of host protein XRN1 in viral infection, XRN1 protein knockout Calu-3 Cells were infected with SARS-COV-2 for 7 - 9 Days , and the effects on infection was detected through CRISPR-based genome-wide gene-knockout screen.
ResultsIt is reported that knockout of XRN1 increases SARS-CoV-2 RNA levels compared with control group.

 Full List of Virus RNA Interacting with This Protien
            RNA Region: 5'-UTR-L (hCoV-19/Not Specified Virus Strain )
              RNA Region Details RNA Info Click to show the detail information of this RNA binding region [3]
              Strains Name
hCoV-19/Not Specified Virus Strain
              RNA Binding Region
5'-UTR-L
              Virus Name
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
              Infection Cells Huh7 cells (human liver cell line); Calu-3 cells (human lung cancer cell line)  (CVCL_0336;CVCL_0609 )
              Cell Originated Tissue Liver; Lung
              Interaction Score P-value < 0.05
              Method Description RNA pull-down assays; liquid chromatography with tandem mass spectrometry (LC-MS/MS); Wilcoxon test; MS2 affinity purification coupled with liquid chromatography-mass spectrometry (MAMS)

Differential Gene Expression During SARS-COV-2 Infection
GEO Accession: GSE152641
Sample Type: Blood
Samples Details: Healthy Control: 24; COVID-19: 62
Platform: GPL24676 Illumina NovaSeq 6000
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GEO Accession: GSE162835
Sample Type: Nasopharyngeal Swabs
Samples Details: COVID-19 (Mild Symptoms): 37; COVID-19 (Moderate Symptoms): 10; COVID-19 (Severe Symptoms): 3
Platform: GPL24676 Illumina NovaSeq 6000
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GEO Accession: GSE175779
Sample Type: Human Bronchial Epithelial Cells
Samples Details: Healthy Control: 4 (0, 24, 48, 72 and 96 h); COVID-19: 4 (24, 48, 72 and 96 h)
Platform: GPL18573 Illumina NextSeq 500
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Protein Phosphorylation after Virus Infection
S1343 [4]
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S1348 [4]
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Protein Sequence Information
MGVPKFYRWISERYPCLSEVVKEHQIPEFDNLYLDMNGIIHQCSHPNDDDVHFRISDDKIFTDIFHYLEVLFRIIKPRKVFFMAVDGVAPRAKMNQQRGRRFRSAKEAEDKIKKAIEKGETLPTEARFDSNCITPGTEFMARLHEHLKYFVNMKISTDKSWQGVTIYFSGHETPGEGEHKIMEFIRSEKAKPDHDPNTRHCLYGLDADLIMLGLTSHEAHFSLLREEVRFGGKKTQRVCAPEETTFHLLHLSLMREYIDYEFSVLKEKITFKYDIERIIDDWILMGFLVGNDFIPHLPHLHINHDALPLLYGTYVTILPELGGYINESGHLNLPRFEKYLVKLSDFDREHFSEVFVDLKWFESKVGNKYLNEAAGVAAEEARNYKEKKKLKGQENSLCWTALDKNEGEMITSKDNLEDETEDDDLFETEFRQYKRTYYMTKMGVDVVSDDFLADQAACYVQAIQWILHYYYHGVQSWSWYYPYHYAPFLSDIHNISTLKIHFELGKPFKPFEQLLAVLPAASKNLLPACYQHLMTNEDSPIIEYYPPDFKTDLNGKQQEWEAVVLIPFIDEKRLLEAMETCNHSLKKEERKRNQHSECLMCWYDRDTEFIYPSPWPEKFPAIERCCTRYKIISLDAWRVDINKNKITRIDQKALYFCGFPTLKHIRHKFFLKKSGVQVFQQSSRGENMMLEILVDAESDELTVENVASSVLGKSVFVNWPHLEEARVVAVSDGETKFYLEEPPGTQKLYSGRTAPPSKVVHLGDKEQSNWAKEVQGISEHYLRRKGIIINETSAVVYAQLLTGRKYQINQNGEVRLEKQWSKQVVPFVYQTIVKDIRAFDSRFSNIKTLDDLFPLRSMVFMLGTPYYGCTGEVQDSGDVITEGRIRVIFSIPCEPNLDALIQNQHKYSIKYNPGYVLASRLGVSGYLVSRFTGSIFIGRGSRRNPHGDHKANVGLNLKFNKKNEEVPGYTKKVGSEWMYSSAAEQLLAEYLERAPELFSYIAKNSQEDVFYEDDIWPGENENGAEKVQEIITWLKGHPVSTLSRSSCDLQILDAAIVEKIEEEVEKCKQRKNNKKVRVTVKPHLLYRPLEQQHGVIPDRDAEFCLFDRVVNVRENFSVPVGLRGTIIGIKGANREADVLFEVLFDEEFPGGLTIRCSPGRGYRLPTSALVNLSHGSRSETGNQKLTAIVKPQPAVHQHSSSSSVSSGHLGALNHSPQSLFVPTQVPTKDDDEFCNIWQSLQGSGKMQYFQPTIQEKGAVLPQEISQVNQHHKSGFNDNSVKYQQRKHDPHRKFKEECKSPKAECWSQKMSNKQPNSGIENFLASLNISKENEVQSSHHGEPPSEEHLSPQSFAMGTRMLKEILKIDGSNTVDHKNEIKQIANEIPVSSNRRDEYGLPSQPKQNKKLASYMNKPHSANEYHNVQSMDNMCWPAPSQIPPVSTPVTELSRICSLVGMPQPDFSFLRMPQTMTVCQVKLSNGLLVHGPQCHSENEAKEKAALFALQQLGSLGMNFPLPSQVFANYPSAVPPGTIPPAFPPPTGWDHYGSNYALGAANIMPSSSHLFGSMPWGPSVPVPGKPFHHTLYSGTMPMAGGIPGGVHNQFIPLQVTKKRVANKKNFENKEAQSSQATPVQTSQPDSSNIVKVSPRESSSASLKSSPIAQPASSFQVETASQGHSISHHKSTPISSSRRKSRKLAVNFGVSKPSE
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References
1 Degradation of histone mRNA requires oligouridylation followed by decapping and simultaneous degradation of the mRNA both 5 to 3 and 3 to 5 . Genes Dev. 2008 Jan 1;22(1):50-65.
2 Genome-wide CRISPR screens identify GATA6 as a proviral host factor for SARS-CoV-2 via modulation of ACE2. Nat Commun. 2022 Apr 25;13(1):2237.
3 Mapping the host protein interactome of non-coding regions in SARS-CoV-2 genome. bioRxiv. 2021 Jun; DOI:10.1101/2021.06.19.449092.
4 Multilevel proteomics reveals host perturbations by SARS-CoV-2 and SARS-CoV. Nature. 2021 Jun;594(7862):246-252.