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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

Gene LinkOut

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