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    KPNA3 karyopherin subunit alpha 3 [ Homo sapiens (human) ]

    Gene ID: 3839, updated on 5-Sep-2021

    Summary

    Official Symbol
    KPNA3provided by HGNC
    Official Full Name
    karyopherin subunit alpha 3provided by HGNC
    Primary source
    HGNC:HGNC:6396
    See related
    Ensembl:ENSG00000102753 MIM:601892
    Gene type
    protein coding
    RefSeq status
    REVIEWED
    Organism
    Homo sapiens
    Lineage
    Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
    Also known as
    SRP1; SRP4; IPOA4; hSRP1; SRP1gamma
    Summary
    The transport of molecules between the nucleus and the cytoplasm in eukaryotic cells is mediated by the nuclear pore complex (NPC), which consists of 60-100 proteins. Small molecules (up to 70 kD) can pass through the nuclear pore by nonselective diffusion while larger molecules are transported by an active process. The protein encoded by this gene belongs to the importin alpha family, and is involved in nuclear protein import. [provided by RefSeq, Jan 2009]
    Expression
    Ubiquitous expression in testis (RPKM 17.5), brain (RPKM 15.2) and 25 other tissues See more
    Orthologs
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    Genomic context

    See KPNA3 in Genome Data Viewer
    Location:
    13q14.2
    Exon count:
    18
    Annotation release Status Assembly Chr Location
    109.20210514 current GRCh38.p13 (GCF_000001405.39) 13 NC_000013.11 (49699307..49792682, complement)
    105.20201022 previous assembly GRCh37.p13 (GCF_000001405.25) 13 NC_000013.10 (50273456..50366818, complement)

    Chromosome 13 - NC_000013.11Genomic Context describing neighboring genes Neighboring gene uncharacterized LOC105370205 Neighboring gene EBP like Neighboring gene CTAGE family member 10, pseudogene Neighboring gene RNY4 pseudogene 30

    Genomic regions, transcripts, and products

    Expression

    • Project title: HPA RNA-seq normal tissues
    • Description: RNA-seq was performed of tissue samples from 95 human individuals representing 27 different tissues in order to determine tissue-specificity of all protein-coding genes
    • BioProject: PRJEB4337
    • Publication: PMID 24309898
    • Analysis date: Wed Apr 4 07:08:55 2018

    Bibliography

    GeneRIFs: Gene References Into Functions

    What's a GeneRIF?

    Phenotypes

    Associated conditions

    Description Tests
    Meta-analyses identify 13 loci associated with age at menopause and highlight DNA repair and immune pathways.
    GeneReviews: Not available
    Novel genetic loci identified for the pathophysiology of childhood obesity in the Hispanic population.
    GeneReviews: Not available

    HIV-1 interactions

    Protein interactions

    Protein Gene Interaction Pubs
    integrase gag-pol Karyopherin alpha and beta are reported to interact with HIV-1 integrase (IN) to facilitate nuclear import of IN, however a conflicting report indicates nuclear accumulation of IN does not involve karyopherin alpha, beta 1, or beta 2 mediated pathways PubMed
    gag-pol HIV-1 IN interacts with importin alpha by the BiFC assay and amino acids 161-173 in IN are required for the interaction with importin alpha PubMed
    gag-pol HIV-1 Rev disrupts both IN-TNPO3 and IN-importin alpha complexes PubMed
    gag-pol Some reports indicate a possible role for the interactions between karyopherin alpha and beta with HIV-1 integrase in the nuclear import of HIV-1 preintegration complexes (PIC), while other reports indicate integrase is not involved in PIC nuclear import PubMed
    gag-pol Karyopherin alpha binds to a bipartite nuclear localization signal in HIV-1 integrase (amino acids 186-189 and 211-219) PubMed
    matrix gag Nuclear import of HIV-1 preintegration complexes by karyopherin alpha is governed by phosphorylation of HIV-1 Matrix on tyrosine and serine, however the exact role of phosphorylation of the C-terminal tyrosine of Matrix has been debated PubMed
    gag HIV-1 Matrix increases intracellular ATP content, an effect hypothesized to support the ATP-dependent nuclear import of HIV-1 preintegration complexes by karyopherin alpha PubMed
    gag HIV-1 Vpr increases the affinity of karyopherin alpha to the HIV-1 Matrix nuclear localization signal, thereby mediating the nuclear import of HIV-1 preintegration complexes PubMed
    gag Hsp70 stimulates the binding of HIV-1 matrix to karyopherin alpha PubMed
    gag The role of HIV-1 Matrix during nuclear import of the HIV-1 preintegration complex has been controversial, however recent understanding indicates HIV-1 Matrix and Vpr proteins act in concert to facilitate nuclear import by binding to karyopherin alpha PubMed
    gag HIV-1 Matrix contains two nuclear localization signals (NLS) spanning amino acids 24-33 and 110-114 that are recognized by karyopherin alpha and mediate the nuclear import of HIV-1 preintegration complexes PubMed

    Go to the HIV-1, Human Interaction Database

    Interactions

    Products Interactant Other Gene Complex Source Pubs Description

    General gene information

    Markers

    Homology

    Gene Ontology Provided by GOA

    Function Evidence Code Pubs
    enables nuclear import signal receptor activity IBA
    Inferred from Biological aspect of Ancestor
    more info
    PubMed 
    enables nuclear localization sequence binding IBA
    Inferred from Biological aspect of Ancestor
    more info
    PubMed 
    enables protein C-terminus binding IEA
    Inferred from Electronic Annotation
    more info
     
    enables protein binding IPI
    Inferred from Physical Interaction
    more info
    PubMed 
    Process Evidence Code Pubs
    involved_in NLS-bearing protein import into nucleus IBA
    Inferred from Biological aspect of Ancestor
    more info
    PubMed 
    involved_in protein-containing complex assembly TAS
    Traceable Author Statement
    more info
    PubMed 
    involved_in viral entry into host cell IEA
    Inferred from Electronic Annotation
    more info
     
    involved_in viral penetration into host nucleus IEA
    Inferred from Electronic Annotation
    more info
     
    Component Evidence Code Pubs
    located_in cytosol TAS
    Traceable Author Statement
    more info
     
    located_in host cell IEA
    Inferred from Electronic Annotation
    more info
     
    part_of nuclear pore TAS
    Traceable Author Statement
    more info
    PubMed 
    is_active_in nucleoplasm IBA
    Inferred from Biological aspect of Ancestor
    more info
    PubMed 
    located_in nucleoplasm TAS
    Traceable Author Statement
    more info
     
    is_active_in nucleus IBA
    Inferred from Biological aspect of Ancestor
    more info
    PubMed 

    General protein information

    Preferred Names
    importin subunit alpha-4
    Names
    SRP1-gamma
    importin alpha 4
    importin alpha Q2
    importin alpha-3
    importin subunit alpha-3
    karyopherin alpha 3 (importin alpha 4)
    qip2

    NCBI Reference Sequences (RefSeq)

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    RefSeqs maintained independently of Annotated Genomes

    These reference sequences exist independently of genome builds. Explain

    These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.

    mRNA and Protein(s)

    1. NM_002267.4NP_002258.2  importin subunit alpha-4

      See identical proteins and their annotated locations for NP_002258.2

      Status: REVIEWED

      Source sequence(s)
      AI309735, AK291000, AU132188, BC035090, DN991804
      Consensus CDS
      CCDS9421.1
      UniProtKB/Swiss-Prot
      O00505
      UniProtKB/TrEMBL
      A0A024RDV7
      Related
      ENSP00000261667.3, ENST00000261667.8
      Conserved Domains (2) summary
      COG5064
      Location:2521
      SRP1; Karyopherin (importin) alpha [Intracellular trafficking and secretion]
      sd00043
      Location:109142
      ARM; armadillo repeat [structural motif]

    RefSeqs of Annotated Genomes: Homo sapiens Updated Annotation Release 109.20210514

    The following sections contain reference sequences that belong to a specific genome build. Explain

    Reference GRCh38.p13 Primary Assembly

    Genomic

    1. NC_000013.11 Reference GRCh38.p13 Primary Assembly

      Range
      49699307..49792682 complement
      Download
      GenBank, FASTA, Sequence Viewer (Graphics)

    mRNA and Protein(s)

    1. XM_017020561.1XP_016876050.1  importin subunit alpha-4 isoform X1

      Conserved Domains (2) summary
      COG5064
      Location:1497
      SRP1; Karyopherin (importin) alpha [Intracellular trafficking and secretion]
      sd00043
      Location:85118
      ARM; armadillo repeat [structural motif]
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