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    CHX21 cation/H+ exchanger 21 [ Arabidopsis thaliana (thale cress) ]

    Gene ID: 817749, updated on 18-Sep-2024

    Summary

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    Official Symbol
    CHX21
    Official Full Name
    cation/H+ exchanger 21
    Primary source
    TAIR:AT2G31910
    Locus tag
    AT2G31910
    See related
    Araport:AT2G31910
    Gene type
    protein coding
    RefSeq status
    REVIEWED
    Organism
    Arabidopsis thaliana (ecotype: Columbia)
    Lineage
    Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta; Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae; rosids; malvids; Brassicales; Brassicaceae; Camelineae; Arabidopsis
    Also known as
    ATCHX21; cation/H+ exchanger 21; F20M17.5; F20M17_5
    Summary
    member of Putative Na+/H+ antiporter family
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    Genomic context

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    See CHX21 in Genome Data Viewer
    Location:
    chromosome: 2
    Exon count:
    5
    Sequence:
    Chromosome: 2; NC_003071.7 (13570107..13574632)

    Chromosome 2 - NC_003071.7Genomic Context describing neighboring genes Neighboring gene RAP Neighboring gene ncRNA Neighboring gene ncRNA Neighboring gene myosin-like protein XIF Neighboring gene ncRNA Neighboring gene ncRNA Neighboring gene elongation factor 1-delta, putative (DUF936) Neighboring gene ncRNA Neighboring gene uncharacterized protein

    Genomic regions, transcripts, and products

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    Genomic Sequence:
    NC_003071.7

    Go to nucleotide: Graphics FASTA GenBank

    Bibliography

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    Related articles in PubMed

    1. Functional analysis of CHX21: a putative sodium transporter in Arabidopsis. Hall D, et al. J Exp Bot, 2006. PMID 16513816
    2. Pollen tubes lacking a pair of K+ transporters fail to target ovules in Arabidopsis. Lu Y, et al. Plant Cell, 2011 Jan. PMID 21239645, Free PMC Article
    3. Sequence and analysis of chromosome 2 of the plant Arabidopsis thaliana. Lin X, et al. Nature, 1999 Dec 16. PMID 10617197

    GeneRIFs: Gene References Into Functions

    What's a GeneRIF?
    1. CHX21 and CHX23, participate in pollen tube guidance and are functionally redundant.
      Title: Pollen tubes lacking a pair of K+ transporters fail to target ovules in Arabidopsis.
    2. The CHX21 transporter plays a role in the regulation of xylem Na+ concentration and, consequently, Na+ accumulation in the leaf.
      Title: Functional analysis of CHX21: a putative sodium transporter in Arabidopsis.
    Submit: New GeneRIF Correction

    General gene information

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    NM_128749.2

    Gene Ontology Provided by TAIR

    Function Evidence Code Pubs
    enables antiporter activity IEA
    Inferred from Electronic Annotation
    more info
    		  
    enables sodium:proton antiporter activity ISS
    Inferred from Sequence or Structural Similarity
    more info
    		  
    Process Evidence Code Pubs
    acts_upstream_of_or_within pollen tube guidance IGI
    Inferred from Genetic Interaction
    more info
    		 PubMed 
    involved_in proton transmembrane transport IEA
    Inferred from Electronic Annotation
    more info
    		  

    General protein information

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    Preferred Names
    cation/H+ exchanger 21
    NP_180750.2
    • cation/H+ exchanger 21 (CHX21); FUNCTIONS IN: sodium:hydrogen antiporter activity; INVOLVED IN: cation transport, transmembrane transport; LOCATED IN: integral to membrane; EXPRESSED IN: male gametophyte, root, leaf, pollen tube; CONTAINS InterPro DOMAIN/s: Cation/H+ exchanger (InterPro:IPR006153); BEST Arabidopsis thaliana protein match is: cation/H+ exchanger 23 (TAIR:AT1G05580.1); Has 4644 Blast hits to 4628 proteins in 1402 species: Archae - 218; Bacteria - 3403; Metazoa - 0; Fungi - 114; Plants - 555; Viruses - 0; Other Eukaryotes - 354 (source: NCBI BLink).

    NCBI Reference Sequences (RefSeq)

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    Genome Annotation

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

    Reference assembly

    Genomic

    1. NC_003071.7 Reference assembly

      Range
      13570107..13574632
      Download
      GenBank, FASTA, Sequence Viewer (Graphics)

    mRNA and Protein(s)

    1. NM_001336355.1 → NP_001324589.1  cation/H+ exchanger 21 [Arabidopsis thaliana]

      Status: REVIEWED

      UniProtKB/TrEMBL
      A0A1P8B0K5, A0A654EY00, A0A7G2EDN8

    2. NM_001336356.1 → NP_001324588.1  cation/H+ exchanger 21 [Arabidopsis thaliana]

      Status: REVIEWED

      UniProtKB/TrEMBL
      A0A1P8B0K5, A0A654EY00, A0A7G2EDN8

    3. NM_128749.2 → NP_180750.2  cation/H+ exchanger 21 [Arabidopsis thaliana]

      See identical proteins and their annotated locations for NP_180750.2

      Status: REVIEWED

      UniProtKB/Swiss-Prot
      Q9SKA9
      UniProtKB/TrEMBL
      A0A5S9X316, A0A654EY00, A0A7G2EDN8
      Conserved Domains (2) summary
      PLN03159
      Location:1 → 787
      PLN03159; cation/H(+) antiporter 15; Provisional
      pfam00999
      Location:49 → 428
      Na_H_Exchanger; Sodium/hydrogen exchanger family
    Nucleotide Protein
    Heading Accession and Version
    Protein Accession Links
    GenPept Link UniProtKB Link
    Q9SKA9.2

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