Host Protein General Information (ID: PT1083)
  Protein Name
Splicing factor 3A subunit 3 (SF3A3)
  Gene Name
SF3A3
  Host Species
Homo sapiens
  Uniprot Entry Name
SF3A3_HUMAN
  Protein Families
SF3A3 family
  Subcellular Location
Nucleus speckle Nucleus
  External Link
NCBI Gene ID
10946
Uniprot ID
Q12874
Ensembl ID
ENSG00000183431
HGNC ID
HGNC:10767
  Function in Host
Involved in pre-mRNA splicing as a component of the splicingfactor SF3A complex that contributes to the assembly of the 17S U2snRNP, and the subsequent assembly of the pre-spliceosome 'E' complexand the pre-catalytic spliceosome 'A' complex. Involved in pre-mRNA splicing as acomponent of pre-catalytic spliceosome 'B' complexes. [1-5]
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  Related KEGG Pathway
Spliceosome hsa03040            Pathway Map 
  3D Structure

Function of This Protein During Virus Infection
Virus NameSARS-COV-2 Protein Function Pro-viral [6]
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 SF3A3 in viral infection, SF3A3 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 SF3A3 leads to the decreased SARS-CoV-2 RNA levels compared with control group.

Host Protein - Virus RNA Network

 Full List of Virus RNA Interacting with This Protien
            RNA Region: 3'-UTR (hCoV-SARS/Manitoba/2003 )
              RNA Region Details RNA Info Click to show the detail information of this RNA binding region [7]
              Strains Name
hCoV-SARS/Manitoba/2003
              Strains Family
Beta
              RNA Binding Region
3'-UTR
              Virus Name
Severe acute respiratory syndrome-related coronavirus (HCoV-SARS)
              Interaction Type Potential binding protein
              Infection Cells HepG2 cells (hepatocellular carcinoma cell line)  (CVCL_0027 )
              Cell Originated Tissue Liver
              Method Description ENCODE project database; Pysster model; DeepRiPe (Section 3.6; 3.7; 3.8; 3.9); ClustalO (72) algorithm
           RNA Region: 3'-UTR (hCov-OC43/VR-759 Quebec/2019 )
              RNA Region Details RNA Info Click to show the detail information of this RNA binding region [7]
              Strains Name
hCov-OC43/VR-759 Quebec/2019
              Strains Family
Beta
              RNA Binding Region
3'-UTR
              Virus Name
Human coronavirus OC43 (HCov-OC43)
              Interaction Type Potential binding protein
              Infection Cells HepG2 cells (hepatocellular carcinoma cell line) HepG2 cells (hepatocellular carcinoma cell line)  (CVCL_0027 )
              Cell Originated Tissue Liver
              Method Description ENCODE project database; Pysster model; DeepRiPe (Section 3.6; 3.7; 3.8; 3.9); ClustalO (72) algorithm
           RNA Region: 3'-UTR (hCov-NL63/Amsterdam/2004 )
              RNA Region Details RNA Info Click to show the detail information of this RNA binding region [7]
              Strains Name
hCov-NL63/Amsterdam/2004
              Strains Family
Alpha
              RNA Binding Region
3'-UTR
              Virus Name
Human Coronavirus NL63 (HCov-NL63)
              Interaction Type Potential binding protein
              Infection Cells HepG2 cells (hepatocellular carcinoma cell line) HepG2 cells (hepatocellular carcinoma cell line)  (CVCL_0027 )
              Cell Originated Tissue Liver
              Method Description ENCODE project database; Pysster model; DeepRiPe (Section 3.6; 3.7; 3.8; 3.9); ClustalO (72) algorithm
           RNA Region: 3'-UTR (hCov-MERS/Jeddah/2012 )
              RNA Region Details RNA Info Click to show the detail information of this RNA binding region [7]
              Strains Name
hCov-MERS/Jeddah/2012
              Strains Family
Beta
              RNA Binding Region
3'-UTR
              Virus Name
Middle East respiratory syndrome-related coronavirus (HCov-MERS)
              Interaction Type Potential binding protein
              Infection Cells HepG2 cells (hepatocellular carcinoma cell line) HepG2 cells (hepatocellular carcinoma cell line)  (CVCL_0027 )
              Cell Originated Tissue Liver
              Method Description ENCODE project database; Pysster model; DeepRiPe (Section 3.6; 3.7; 3.8; 3.9); ClustalO (72) algorithm
           RNA Region: 3'-UTR (hCoV-HKU1/Hong Kong/2004 )
              RNA Region Details RNA Info Click to show the detail information of this RNA binding region [7]
              Strains Name
hCoV-HKU1/Hong Kong/2004
              Strains Family
Beta
              RNA Binding Region
3'-UTR
              Virus Name
Human coronavirus HKU1 (HCoV-HKU1)
              Interaction Type Potential binding protein
              Infection Cells HepG2 cells (hepatocellular carcinoma cell line) HepG2 cells (hepatocellular carcinoma cell line)  (CVCL_0027 )
              Cell Originated Tissue Liver
              Method Description ENCODE project database; Pysster model; DeepRiPe (Section 3.6; 3.7; 3.8; 3.9); ClustalO (72) algorithm
           RNA Region: 3'-UTR (hCov-229E/Würzburg/2000 )
              RNA Region Details RNA Info Click to show the detail information of this RNA binding region [7]
              Strains Name
hCov-229E/Würzburg/2000
              Strains Family
Alpha
              RNA Binding Region
3'-UTR
              Virus Name
Human coronavirus 229E (HCov-229E)
              Interaction Type Potential binding protein
              Infection Cells HepG2 cells (hepatocellular carcinoma cell line) HepG2 cells (hepatocellular carcinoma cell line)  (CVCL_0027 )
              Cell Originated Tissue Liver
              Method Description ENCODE project database; Pysster model; DeepRiPe (Section 3.6; 3.7; 3.8; 3.9); ClustalO (72) algorithm
           RNA Region: 3'-UTR (hCoV-19/Wuhan-Hu-1/2019 )
              RNA Region Details RNA Info Click to show the detail information of this RNA binding region [7]
              Strains Name
hCoV-19/Wuhan-Hu-1/2019
              Strains Family
Beta (B.1.351)
              RNA Binding Region
3'-UTR
              Virus Name
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
              Interaction Type Potential binding protein
              Infection Cells HepG2 cells (hepatocellular carcinoma cell line) HepG2 cells (hepatocellular carcinoma cell line)  (CVCL_0027 )
              Cell Originated Tissue Liver
              Method Description ENCODE project database; Pysster model; DeepRiPe (Section 3.6; 3.7; 3.8; 3.9); ClustalO (72) algorithm
           RNA Region: ORF10 (hCoV-19/Not Specified Virus Strain )
              RNA Region Details RNA Info Click to show the detail information of this RNA binding region [8]
              Strains Name
hCoV-19/Not Specified Virus Strain
              RNA Binding Region
ORF10
              Virus Name
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
              Infection Cells Huh7 cells (human liver cell line) Huh7 cells (human liver cell line)  (CVCL_0336 )
              Cell Originated Tissue Liver
              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)
           RNA Region: E region (hCoV-19/Zambia/ZMB-88673/2021 )
              RNA Region Details RNA Info Click to show the detail information of this RNA binding region [7]
              Strains Name
hCoV-19/Zambia/ZMB-88673/2021
              Strains Family
Beta (B.1.351)
              RNA Binding Region
E region
              Virus Name
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
              Interaction Type Potential binding protein
              Infection Cells HepG2 cells (hepatocellular carcinoma cell line) HepG2 cells (hepatocellular carcinoma cell line)  (CVCL_0027 )
              Cell Originated Tissue Liver
              Method Description ENCODE project database; Pysster model; DeepRiPe (Section 3.6; 3.7; 3.8; 3.9); ClustalO (72) algorithm
           RNA Region: E region (hCoV-19/Malawi/KRISP-K010154/2020 )
              RNA Region Details RNA Info Click to show the detail information of this RNA binding region [7]
              Strains Name
hCoV-19/Malawi/KRISP-K010154/2020
              Strains Family
Beta (B.1.351)
              RNA Binding Region
E region
              Virus Name
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
              Interaction Type Potential binding protein
              Infection Cells HepG2 cells (hepatocellular carcinoma cell line) HepG2 cells (hepatocellular carcinoma cell line)  (CVCL_0027 )
              Cell Originated Tissue Liver
              Method Description ENCODE project database; Pysster model; DeepRiPe (Section 3.6; 3.7; 3.8; 3.9); ClustalO (72) algorithm
           RNA Region: E region (hCoV-19/Eswatini/N2779/2020 )
              RNA Region Details RNA Info Click to show the detail information of this RNA binding region [7]
              Strains Name
hCoV-19/Eswatini/N2779/2020
              Strains Family
Beta (B.1.351)
              RNA Binding Region
E region
              Virus Name
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
              Interaction Type Potential binding protein
              Infection Cells HepG2 cells (hepatocellular carcinoma cell line) HepG2 cells (hepatocellular carcinoma cell line)  (CVCL_0027 )
              Cell Originated Tissue Liver
              Method Description ENCODE project database; Pysster model; DeepRiPe (Section 3.6; 3.7; 3.8; 3.9); ClustalO (72) algorithm
           RNA Region: M region (hCoV-19/Wuhan/WHUH020/2020 )
              RNA Region Details RNA Info Click to show the detail information of this RNA binding region [7]
              Strains Name
hCoV-19/Wuhan/WHUH020/2020
              Strains Family
Epsilon (B.1.427; B.1.429)
              RNA Binding Region
M region
              Virus Name
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
              Interaction Type Potential binding protein
              Infection Cells HepG2 cells (hepatocellular carcinoma cell line) HepG2 cells (hepatocellular carcinoma cell line)  (CVCL_0027 )
              Cell Originated Tissue Liver
              Method Description ENCODE project database; Pysster model; DeepRiPe (Section 3.6; 3.7; 3.8; 3.9); ClustalO (72) algorithm
           RNA Region: M region (hCoV-19/USA/CA-CZB-14678/2020 )
              RNA Region Details RNA Info Click to show the detail information of this RNA binding region [7]
              Strains Name
hCoV-19/USA/CA-CZB-14678/2020
              Strains Family
Epsilon (B.1.427; B.1.429)
              RNA Binding Region
M region
              Virus Name
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
              Interaction Type Potential binding protein
              Infection Cells HepG2 cells (hepatocellular carcinoma cell line) HepG2 cells (hepatocellular carcinoma cell line)  (CVCL_0027 )
              Cell Originated Tissue Liver
              Method Description ENCODE project database; Pysster model; DeepRiPe (Section 3.6; 3.7; 3.8; 3.9); ClustalO (72) algorithm
           RNA Region: M region (hCoV-19/NewZealand/20CV0676/2020 )
              RNA Region Details RNA Info Click to show the detail information of this RNA binding region [7]
              Strains Name
hCoV-19/NewZealand/20CV0676/2020
              Strains Family
Epsilon (B.1.427; B.1.429)
              RNA Binding Region
M region
              Virus Name
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
              Interaction Type Potential binding protein
              Infection Cells HepG2 cells (hepatocellular carcinoma cell line) HepG2 cells (hepatocellular carcinoma cell line)  (CVCL_0027 )
              Cell Originated Tissue Liver
              Method Description ENCODE project database; Pysster model; DeepRiPe (Section 3.6; 3.7; 3.8; 3.9); ClustalO (72) algorithm
           RNA Region: M region (hCoV-19/Namibia/N17380/2021 )
              RNA Region Details RNA Info Click to show the detail information of this RNA binding region [7]
              Strains Name
hCoV-19/Namibia/N17380/2021
              Strains Family
Delta (B.1.617.2 and AY lineages)
              RNA Binding Region
M region
              Virus Name
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
              Interaction Type Potential binding protein
              Infection Cells HepG2 cells (hepatocellular carcinoma cell line) HepG2 cells (hepatocellular carcinoma cell line)  (CVCL_0027 )
              Cell Originated Tissue Liver
              Method Description ENCODE project database; Pysster model; DeepRiPe (Section 3.6; 3.7; 3.8; 3.9); ClustalO (72) algorithm
           RNA Region: M region (hCoV-19/Namibia/CERI-KRISP-K022530/2021 )
              RNA Region Details RNA Info Click to show the detail information of this RNA binding region [7]
              Strains Name
hCoV-19/Namibia/CERI-KRISP-K022530/2021
              Strains Family
Delta (B.1.617.2 and AY lineages)
              RNA Binding Region
M region
              Virus Name
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
              Interaction Type Potential binding protein
              Infection Cells HepG2 cells (hepatocellular carcinoma cell line) HepG2 cells (hepatocellular carcinoma cell line)  (CVCL_0027 )
              Cell Originated Tissue Liver
              Method Description ENCODE project database; Pysster model; DeepRiPe (Section 3.6; 3.7; 3.8; 3.9); ClustalO (72) algorithm
           RNA Region: M region (hCoV-19/Kyrgyzstan/ChVir26576_10/2021 )
              RNA Region Details RNA Info Click to show the detail information of this RNA binding region [7]
              Strains Name
hCoV-19/Kyrgyzstan/ChVir26576_10/2021
              Strains Family
Delta (B.1.617.2 and AY lineages)
              RNA Binding Region
M region
              Virus Name
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
              Interaction Type Potential binding protein
              Infection Cells HepG2 cells (hepatocellular carcinoma cell line) HepG2 cells (hepatocellular carcinoma cell line)  (CVCL_0027 )
              Cell Originated Tissue Liver
              Method Description ENCODE project database; Pysster model; DeepRiPe (Section 3.6; 3.7; 3.8; 3.9); ClustalO (72) algorithm
           RNA Region: M region (hCoV-19/Kazakhstan/1872/2021 )
              RNA Region Details RNA Info Click to show the detail information of this RNA binding region [7]
              Strains Name
hCoV-19/Kazakhstan/1872/2021
              Strains Family
Delta (B.1.617.2 and AY lineages)
              RNA Binding Region
M region
              Virus Name
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
              Interaction Type Potential binding protein
              Infection Cells HepG2 cells (hepatocellular carcinoma cell line) HepG2 cells (hepatocellular carcinoma cell line)  (CVCL_0027 )
              Cell Originated Tissue Liver
              Method Description ENCODE project database; Pysster model; DeepRiPe (Section 3.6; 3.7; 3.8; 3.9); ClustalO (72) algorithm
           RNA Region: M region (hCoV-19/Iraq/Thi-Qar-1/2021 )
              RNA Region Details RNA Info Click to show the detail information of this RNA binding region [7]
              Strains Name
hCoV-19/Iraq/Thi-Qar-1/2021
              Strains Family
Delta (B.1.617.2 and AY lineages)
              RNA Binding Region
M region
              Virus Name
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
              Interaction Type Potential binding protein
              Infection Cells HepG2 cells (hepatocellular carcinoma cell line) HepG2 cells (hepatocellular carcinoma cell line)  (CVCL_0027 )
              Cell Originated Tissue Liver
              Method Description ENCODE project database; Pysster model; DeepRiPe (Section 3.6; 3.7; 3.8; 3.9); ClustalO (72) algorithm
           RNA Region: M region (hCoV-19/Guam/GU-CDC-2-3906081-/2021 )
              RNA Region Details RNA Info Click to show the detail information of this RNA binding region [7]
              Strains Name
hCoV-19/Guam/GU-CDC-2-3906081-/2021
              Strains Family
Epsilon (B.1.427; B.1.429)
              RNA Binding Region
M region
              Virus Name
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
              Interaction Type Potential binding protein
              Infection Cells HepG2 cells (hepatocellular carcinoma cell line) HepG2 cells (hepatocellular carcinoma cell line)  (CVCL_0027 )
              Cell Originated Tissue Liver
              Method Description ENCODE project database; Pysster model; DeepRiPe (Section 3.6; 3.7; 3.8; 3.9); ClustalO (72) algorithm

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 Sequence Information
METILEQQRRYHEEKERLMDVMAKEMLTKKSTLRDQINSDHRTRAMQDRYMEVSGNLRDLYDDKDGLRKEELNAISGPNEFAEFYNRLKQIKEFHRKHPNEICVPMSVEFEELLKARENPSEEAQNLVEFTDEEGYGRYLDLHDCYLKYINLKASEKLDYITYLSIFDQLFDIPKERKNAEYKRYLEMLLEYLQDYTDRVKPLQDQNELFGKIQAEFEKKWENGTFPGWPKETSSALTHAGAHLDLSAFSSWEELASLGLDRLKSALLALGLKCGGTLEERAQRLFSTKGKSLESLDTSLFAKNPKSKGTKRDTERNKDIAFLEAQIYEYVEILGEQRHLTHENVQRKQARTGEEREEEEEEQISESESEDEENEIIYNPKNLPLGWDGKPIPYWLYKLHGLNINYNCEICGNYTYRGPKAFQRHFAEWRHAHGMRCLGIPNTAHFANVTQIEDAVSLWAKLKLQKASERWQPDTEEEYEDSSGNVVNKKTYEDLKRQGLL
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References
1 Structure of the human activated spliceosome in three conformational states. Cell Res. 2018 Mar;28(3):307-322.
2 Structures of the human pre-catalytic spliceosome and its precursor spliceosome. Cell Res. 2018 Dec;28(12):1129-1140.
3 Domains in human splicing factors SF3a60 and SF3a66 required for binding to SF3a120, assembly of the 17S U2 snRNP, and prespliceosome formation. Mol Cell Biol. 2001 Oct;21(19):6406-17.
4 Functional association of U2 snRNP with the ATP-independent spliceosomal complex E. Mol Cell. 2000 May;5(5):779-87.
5 Specific protein-protein interactions between the essential mammalian spliceosome-associated proteins SAP 61 and SAP 114. Proc Natl Acad Sci USA. 1994 Jul 5;91(14):6403-7.
6 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.
7 Computational Mapping of the Human-SARS-CoV-2 Protein-RNA Interactome. bioRxiv. 2021 Dec; DOI:.org/10.1101/2021.12.22.472458.
8 Mapping the host protein interactome of non-coding regions in SARS-CoV-2 genome. bioRxiv. 2021 Jun; DOI:10.1101/2021.06.19.449092.