Free for academic non-profit institutions. Other users need a Commercial license

Aliases for KCNAB3 Gene

Aliases for KCNAB3 Gene

  • Potassium Channel, Voltage Gated Subfamily A Regulatory Beta Subunit 3 2 3
  • KCNA3B 3 4 6
  • Potassium Voltage-Gated Channel, Shaker-Related Subfamily, Beta Member 3 2 3
  • K(+) Channel Subunit Beta-3 3 4
  • KV-BETA-3 3 4
  • Potassium Channel, Voltage-Dependent, Beta-3 Subunit 3
  • Voltage-Gated Potassium Channel Subunit Beta-3 3
  • KCNA3.1B 3
  • AKR6A9 3

External Ids for KCNAB3 Gene

Previous GeneCards Identifiers for KCNAB3 Gene

  • GC17M008292
  • GC17M008697
  • GC17M007768
  • GC17M008026
  • GC17M007766
  • GC17M007825
  • GC17M007720

Summaries for KCNAB3 Gene

Entrez Gene Summary for KCNAB3 Gene

  • This gene encodes a member of the potassium channel, voltage-gated, shaker-related subfamily. The encoded protein is one of the beta subunits, which are auxiliary proteins associating with functional Kv-alpha subunits. The encoded protein forms a heterodimer with the potassium voltage-gated channel, shaker-related subfamily, member 5 gene product and regulates the activity of the alpha subunit. [provided by RefSeq, May 2012]

GeneCards Summary for KCNAB3 Gene

KCNAB3 (Potassium Channel, Voltage Gated Subfamily A Regulatory Beta Subunit 3) is a Protein Coding gene. Among its related pathways are Transmission across Chemical Synapses and Biological oxidations. GO annotations related to this gene include voltage-gated potassium channel activity and potassium channel regulator activity. An important paralog of this gene is KCNAB2.

UniProtKB/Swiss-Prot for KCNAB3 Gene

  • Accessory potassium channel protein which modulates the activity of the pore-forming alpha subunit. Alters the functional properties of Kv1.5.

Tocris Summary for KCNAB3 Gene

  • Voltage-gated potassium channels (KV) belong to the 6-TM family of potassium channel that also comprises the Ca2+-activated Slo (actually 7-TM) and the Ca2+-activated SK subfamilies. The pore-forming alpha-subunits contain a single pore-forming region and combine to form tetramers. Heteromeric channels can be formed within subfamilies e.g. KV1.1 with KV1.2 and KCNQ2 with KCNQ3.

Gene Wiki entry for KCNAB3 Gene

No data available for PharmGKB "VIP" Summary , fRNAdb sequence ontologies and piRNA Summary for KCNAB3 Gene

Genomics for KCNAB3 Gene

Regulatory Elements for KCNAB3 Gene

Epigenetics Products

  • DNA Methylation CpG Assay Predesigned for Pyrosequencing in human,mouse,rat

Genomic Location for KCNAB3 Gene

7,921,859 bp from pter
7,929,862 bp from pter
8,004 bases
Minus strand

Genomic View for KCNAB3 Gene

UCSC Golden Path with GeneCards custom track
Cytogenetic band:
Genomic Location for KCNAB3 Gene
GeneLoc Logo Genomic Neighborhood Exon StructureGene Density

RefSeq DNA sequence for KCNAB3 Gene

Proteins for KCNAB3 Gene

  • Protein details for KCNAB3 Gene (UniProtKB/Swiss-Prot)

    Protein Symbol:
    Recommended name:
    Voltage-gated potassium channel subunit beta-3
    Protein Accession:
    Secondary Accessions:
    • Q4VAW0

    Protein attributes for KCNAB3 Gene

    404 amino acids
    Molecular mass:
    43670 Da
    Quaternary structure:
    • Forms heteromultimeric complex with alpha subunits

neXtProt entry for KCNAB3 Gene

Proteomics data for KCNAB3 Gene at MOPED

Post-translational modifications for KCNAB3 Gene

  • Modification sites at PhosphoSitePlus
  • Modification sites at neXtProt

Other Protein References for KCNAB3 Gene

ENSEMBL proteins:
Reactome Protein details:
REFSEQ proteins:

No data available for DME Specific Peptides for KCNAB3 Gene

Domains for KCNAB3 Gene

Gene Families for KCNAB3 Gene

  • AKR :Aldo-keto reductases
  • KCN :Potassium channels

Suggested Antigen Peptide Sequences for KCNAB3 Gene

GenScript: Design optimal peptide antigens:

Graphical View of Domain Structure for InterPro Entry



  • O43448
  • Alteration of functional properties of alpha subunit is mediated through N-terminal domain of beta subunit.
  • Belongs to the shaker potassium channel beta subunit family.
genes like me logo Genes that share domains with KCNAB3: view

Function for KCNAB3 Gene

Molecular function for KCNAB3 Gene

GENATLAS Biochemistry: potassium voltage-gated channel,Drosophila shaker-related subfamily,expressed in the brain and,predominantly in the cerebellum,auxiliary beta 3 cytoplasmic peptide,co assembly in the endoplasmic reticulum with the channel forming alpha subunits
UniProtKB/Swiss-Prot Function: Accessory potassium channel protein which modulates the activity of the pore-forming alpha subunit. Alters the functional properties of Kv1.5.

Gene Ontology (GO) - Molecular Function for KCNAB3 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0005249 voltage-gated potassium channel activity IEA --
GO:0015459 potassium channel regulator activity TAS 9857044
genes like me logo Genes that share ontologies with KCNAB3: view

Phenotypes for KCNAB3 Gene

GenomeRNAi human phenotypes for KCNAB3:
genes like me logo Genes that share phenotypes with KCNAB3: view

Animal Model Products

CRISPR Products

No data available for Enzyme Numbers (IUBMB) , Animal Models , miRNA , Transcription Factor Targeting and HOMER Transcription for KCNAB3 Gene

Localization for KCNAB3 Gene

Subcellular locations from UniProtKB/Swiss-Prot for KCNAB3 Gene


Subcellular locations from

Jensen Localization Image for KCNAB3 Gene COMPARTMENTS Subcellular localization image for KCNAB3 gene
Compartment Confidence
plasma membrane 4
cytosol 2
nucleus 2

Gene Ontology (GO) - Cellular Components for KCNAB3 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0005737 cytoplasm IEA --
GO:0005886 plasma membrane TAS --
GO:0016021 integral component of membrane IEA --
genes like me logo Genes that share ontologies with KCNAB3: view

Pathways for KCNAB3 Gene

genes like me logo Genes that share pathways with KCNAB3: view

Pathways by source for KCNAB3 Gene

1 Qiagen pathway for KCNAB3 Gene
1 BioSystems pathway for KCNAB3 Gene

PCR Array Products

  • Pathway & Disease-focused RT² Profiler PCR Arrays

Interacting Proteins for KCNAB3 Gene

Gene Ontology (GO) - Biological Process for KCNAB3 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0006813 potassium ion transport TAS 9857044
GO:0007268 synaptic transmission TAS --
GO:0034765 regulation of ion transmembrane transport IEA --
GO:0071805 potassium ion transmembrane transport IEA --
genes like me logo Genes that share ontologies with KCNAB3: view

Compounds for KCNAB3 Gene

(5) Tocris Compounds for KCNAB3 Gene

Compound Action Cas Number
4-Aminopyridine Non-selective KV channel blocker [504-24-5]
E-4031 dihydrochloride KV11.1 (hERG) channel blocker; inhibits rapid delayed rectifier K+ current (IKr) [113559-13-0]
Margatoxin Potent KV1.3 channel blocker [145808-47-5]
MaxiPost Potassium channel modulator; exerts subtype-specific effects [187523-35-9]
XE 991 dihydrochloride Potent, selective KV7 (KCNQ) channel blocker; blocks M-currents [122955-13-9]
genes like me logo Genes that share compounds with KCNAB3: view

Transcripts for KCNAB3 Gene

Unigene Clusters for KCNAB3 Gene

Potassium voltage-gated channel, shaker-related subfamily, beta member 3:
Representative Sequences:

CRISPR Products

Inhibitory RNA Products

  • Predesigned siRNA for gene silencing in human,mouse,rat for KCNAB3

Primer Products

Flow Cytometry Products

Alternative Splicing Database (ASD) splice patterns (SP) for KCNAB3 Gene

ExUns: 1 ^ 2a · 2b · 2c ^ 3 ^ 4a · 4b ^ 5 ^ 6 ^ 7 ^ 8 ^ 9 ^ 10 ^ 11 ^ 12 ^ 13a · 13b ^ 14
SP1: - - -
SP2: -
SP3: -

Relevant External Links for KCNAB3 Gene

GeneLoc Exon Structure for
ECgene alternative splicing isoforms for

Expression for KCNAB3 Gene

mRNA expression in normal human tissues for KCNAB3 Gene

mRNA expression in embryonic tissues and stem cells from LifeMap Discovery

mRNA differential expression in normal tissues according to GTEx for KCNAB3 Gene

This gene is overexpressed in Brain - Cerebellum (8.6), Brain - Cerebellar Hemisphere (8.0), and Uterus (4.1).

Integrated Proteomics: protein expression from ProteomicsDB, PaxDb, and MOPED for KCNAB3 Gene

SOURCE GeneReport for Unigene cluster for KCNAB3 Gene Hs.435074

mRNA Expression by UniProt/SwissProt for KCNAB3 Gene

Tissue specificity: Brain specific. Most prominent expression in cerebellum. Weaker signals detected in cortex, occipital lobe, frontal lobe and temporal lobe. Not detected in spinal cord, heart, lung, liver, kidney, pancreas, placenta and skeletal muscle.
genes like me logo Genes that share expressions with KCNAB3: view

In Situ Assay Products

Orthologs for KCNAB3 Gene

This gene was present in the common ancestor of animals and fungi.

Orthologs for KCNAB3 Gene

Organism Taxonomy Gene Similarity Type Details
(Pan troglodytes)
Mammalia KCNAB3 35
  • 99.5 (n)
  • 99.5 (a)
  • 100 (a)
(Bos Taurus)
Mammalia KCNAB3 35
  • 92.9 (n)
  • 96.53 (a)
  • 97 (a)
(Canis familiaris)
Mammalia KCNAB3 35
  • 91.91 (n)
  • 96.53 (a)
  • 97 (a)
(Mus musculus)
Mammalia Kcnab3 35
  • 88.45 (n)
  • 93.07 (a)
Kcnab3 16
Kcnab3 36
  • 93 (a)
(Monodelphis domestica)
Mammalia KCNAB3 36
  • 85 (a)
(Ornithorhynchus anatinus)
Mammalia KCNAB3 36
  • 81 (a)
(Rattus norvegicus)
Mammalia Kcnab3 35
  • 89.44 (n)
  • 92.33 (a)
(Anolis carolinensis)
Reptilia KCNAB3 36
  • 84 (a)
tropical clawed frog
(Silurana tropicalis)
Amphibia kcnab3 35
  • 67.25 (n)
  • 75.57 (a)
(Danio rerio)
Actinopterygii KCNAB3 36
  • 75 (a)
LOC100334158 35
  • 66 (n)
  • 71.22 (a)
fruit fly
(Drosophila melanogaster)
Insecta Hk 36
  • 26 (a)
Hk 37
  • 45 (a)
baker's yeast
(Saccharomyces cerevisiae)
Saccharomycetes -- 36
  • 26 (a)
sea squirt
(Ciona savignyi)
Ascidiacea -- 36
  • 65 (a)
Species with no ortholog for KCNAB3:
  • A. gosspyii yeast (Ashbya gossypii)
  • Actinobacteria (Mycobacterium tuberculosis)
  • African clawed frog (Xenopus laevis)
  • African malaria mosquito (Anopheles gambiae)
  • Alicante grape (Vitis vinifera)
  • alpha proteobacteria (Wolbachia pipientis)
  • amoeba (Dictyostelium discoideum)
  • Archea (Pyrococcus horikoshii)
  • barley (Hordeum vulgare)
  • beta proteobacteria (Neisseria meningitidis)
  • bread mold (Neurospora crassa)
  • chicken (Gallus gallus)
  • Chromalveolata (Phytophthora infestans)
  • common water flea (Daphnia pulex)
  • corn (Zea mays)
  • E. coli (Escherichia coli)
  • filamentous fungi (Aspergillus nidulans)
  • Firmicute bacteria (Streptococcus pneumoniae)
  • fission yeast (Schizosaccharomyces pombe)
  • green algae (Chlamydomonas reinhardtii)
  • honey bee (Apis mellifera)
  • K. lactis yeast (Kluyveromyces lactis)
  • loblloly pine (Pinus taeda)
  • malaria parasite (Plasmodium falciparum)
  • medicago trunc (Medicago Truncatula)
  • moss (Physcomitrella patens)
  • orangutan (Pongo pygmaeus)
  • pig (Sus scrofa)
  • rainbow trout (Oncorhynchus mykiss)
  • rice (Oryza sativa)
  • rice blast fungus (Magnaporthe grisea)
  • schistosome parasite (Schistosoma mansoni)
  • sea anemone (Nematostella vectensis)
  • sea urchin (Strongylocentrotus purpuratus)
  • sorghum (Sorghum bicolor)
  • soybean (Glycine max)
  • stem rust fungus (Puccinia graminis)
  • sugarcane (Saccharum officinarum)
  • thale cress (Arabidopsis thaliana)
  • tomato (Lycopersicon esculentum)
  • toxoplasmosis (Toxoplasma gondii)
  • Trichoplax (Trichoplax adhaerens)
  • wheat (Triticum aestivum)
  • worm (Caenorhabditis elegans)

Evolution for KCNAB3 Gene

Gene Tree for KCNAB3 (if available)
Gene Tree for KCNAB3 (if available)

Paralogs for KCNAB3 Gene

Paralogs for KCNAB3 Gene

Selected SIMAP similar genes for KCNAB3 Gene using alignment to 3 proteins:

genes like me logo Genes that share paralogs with KCNAB3: view

Variants for KCNAB3 Gene

Sequence variations from dbSNP and Humsavar for KCNAB3 Gene

SNP ID Clin Chr 17 pos Sequence Context AA Info Type MAF
rs4396585 -- 7,925,552(+) AAAAA(A/G)AATTC intron-variant
rs4444395 -- 7,924,957(+) CCCAG(A/G)CTGTT intron-variant
rs8070212 -- 7,926,610(+) CACTT(A/G)TGACA intron-variant
rs9747329 -- 7,928,419(+) TGACT(G/T)GTGAA intron-variant
rs9891006 -- 7,922,256(+) TTAGG(G/T)TTATT utr-variant-3-prime

Structural Variations from Database of Genomic Variants (DGV) for KCNAB3 Gene

Variant ID Type Subtype PubMed ID
nsv907654 CNV Loss 21882294
nsv457660 CNV Loss 19166990
esv2670156 CNV Deletion 23128226

Relevant External Links for KCNAB3 Gene

HapMap Linkage Disequilibrium report

No data available for Polymorphic Variants from UniProtKB/Swiss-Prot for KCNAB3 Gene

Disorders for KCNAB3 Gene

No disorders were found for KCNAB3 Gene.

No data available for UniProtKB/Swiss-Prot for KCNAB3 Gene

Publications for KCNAB3 Gene

  1. Coexpression of the KCNA3B gene product with Kv1.5 leads to a novel A-type potassium channel. (PMID: 9857044) Leicher T. … Pongs O. (J. Biol. Chem. 1998) 2 3 4 23
  2. The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC). (PMID: 15489334) Gerhard D.S. … Malek J. (Genome Res. 2004) 3 4
  3. Global, in vivo, and site-specific phosphorylation dynamics in signaling networks. (PMID: 17081983) Olsen J.V. … Mann M. (Cell 2006) 3
  4. Comparison of substrate specificity of the ubiquitin ligases Nedd4 and Nedd4-2 using proteome arrays. (PMID: 19953087) Persaud A. … Rotin D. (Mol. Syst. Biol. 2009) 3
  5. Interactions of pathological hallmark proteins: tubulin polymerization promoting protein/p25, beta-amyloid, and alpha-synuclein. (PMID: 21832049) OlA!h J. … OvA!di J. (J. Biol. Chem. 2011) 3

Products for KCNAB3 Gene

Sources for KCNAB3 Gene

Back to Top