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Aliases for CHRNB3 Gene

Aliases for CHRNB3 Gene

  • Cholinergic Receptor Nicotinic Beta 3 Subunit 2 3 5
  • Acetylcholine Receptor, Nicotinic, Beta 3 (Neuronal) 2
  • Cholinergic Receptor, Nicotinic, Beta Polypeptide 3 2
  • Cholinergic Receptor, Nicotinic, Beta 3 (Neuronal) 2
  • Cholinergic Receptor, Nicotinic Beta 3 2

External Ids for CHRNB3 Gene

Previous GeneCards Identifiers for CHRNB3 Gene

  • GC08P042340
  • GC08P042622
  • GC08P042569
  • GC08P042552
  • GC08P041074

Summaries for CHRNB3 Gene

Entrez Gene Summary for CHRNB3 Gene

  • The nicotinic acetylcholine receptors (nAChRs) are members of a superfamily of ligand-gated ion channels that mediate fast signal transmission at synapses. The nAChRs are (hetero)pentamers composed of homologous subunits. The subunits that make up the muscle and neuronal forms of nAChRs are encoded by separate genes and have different primary structure. There are several subtypes of neuronal nAChRs that vary based on which homologous subunits are arranged around the central channel. They are classified as alpha-subunits if, like muscle alpha-1 (MIM 100690), they have a pair of adjacent cysteines as part of the presumed acetylcholine binding site. Subunits lacking these cysteine residues are classified as beta-subunits (Groot Kormelink and Luyten, 1997 [PubMed 9009220]). Elliott et al. (1996) [PubMed 8906617] stated that the proposed structure for each subunit is a conserved N-terminal extracellular domain followed by 3 conserved transmembrane domains, a variable cytoplasmic loop, a fourth conserved transmembrane domain, and a short C-terminal extracellular region.[supplied by OMIM, Apr 2010]

GeneCards Summary for CHRNB3 Gene

CHRNB3 (Cholinergic Receptor Nicotinic Beta 3 Subunit) is a Protein Coding gene. Diseases associated with CHRNB3 include Duane Retraction Syndrome and Autosomal Dominant Nocturnal Frontal Lobe Epilepsy. Among its related pathways are Nanog in Mammalian ESC Pluripotency and Acetylcholine Binding And Downstream Events. GO annotations related to this gene include drug binding. An important paralog of this gene is CHRNA5.

UniProtKB/Swiss-Prot for CHRNB3 Gene

  • After binding acetylcholine, the AChR responds by an extensive change in conformation that affects all subunits and leads to opening of an ion-conducting channel across the plasma membrane.

Gene Wiki entry for CHRNB3 Gene

Additional gene information for CHRNB3 Gene

No data available for CIViC summary , Tocris Summary , PharmGKB "VIP" Summary , fRNAdb sequence ontologies and piRNA Summary for CHRNB3 Gene

Genomics for CHRNB3 Gene

Regulatory Elements for CHRNB3 Gene

Enhancers for CHRNB3 Gene
GeneHancer Identifier Enhancer Score Enhancer Sources Gene-Enhancer Score TSS distance (kb) Number of Genes Away Size (kb) Transcription Factor Binding Sites within enhancer Gene Targets for Enhancer
GH08H042789 1.2 Ensembl ENCODE 11.6 +92.9 92920 1.7 PKNOX1 ATF1 ARNT FEZF1 TCF12 ZNF766 ZNF207 ATF7 RUNX3 NCOA1 CHRNB3 LOC105379396 RNF170 HOOK3 CHRNA6 LOC100288666
GH08H042739 1 Ensembl ENCODE 11.7 +43.9 43853 2.7 ELF3 SMARCA5 DRAP1 PKNOX1 SAP130 MLX NR2F1 MNT HMG20A ELF1 CHRNB3 LOC100288666 CHRNA6
GH08H042745 0.5 ENCODE 12.2 +48.7 48696 0.4 SCRT1 SCRT2 EGR2 LOC105379396 CHRNB3 LOC100288666 CHRNA6
GH08H042718 1.2 Ensembl ENCODE 4.1 +23.3 23309 3.8 HDAC1 FOXA2 ARID4B SIN3A DMAP1 RFX5 TCF12 ZNF766 POLR3A FOS POMK CHRNB3 GC08M042718 PIR44292 LOC105379396
GH08H042746 0.4 ENCODE 12.2 +48.3 48337 0.2 SCRT1 SCRT2 LOC105379396 CHRNB3 LOC100288666 CHRNA6
- Elite enhancer and/or Elite enhancer-gene association Download GeneHancer data dump

Enhancers around CHRNB3 on UCSC Golden Path with GeneCards custom track

Genomic Locations for CHRNB3 Gene

Genomic Locations for CHRNB3 Gene
40,032 bases
Plus strand

Genomic View for CHRNB3 Gene

Genes around CHRNB3 on UCSC Golden Path with GeneCards custom track

Cytogenetic band:
CHRNB3 Gene in genomic location: bands according to Ensembl, locations according to GeneLoc (and/or Entrez Gene and/or Ensembl if different)
Genomic Location for CHRNB3 Gene
GeneLoc Logo Genomic Neighborhood Exon StructureGene Density

RefSeq DNA sequence for CHRNB3 Gene

Proteins for CHRNB3 Gene

  • Protein details for CHRNB3 Gene (UniProtKB/Swiss-Prot)

    Protein Symbol:
    Recommended name:
    Neuronal acetylcholine receptor subunit beta-3
    Protein Accession:
    Secondary Accessions:
    • Q15827

    Protein attributes for CHRNB3 Gene

    458 amino acids
    Molecular mass:
    52729 Da
    Quaternary structure:
    • Neuronal AChR seems to be composed of two different type of subunits: alpha and beta.

neXtProt entry for CHRNB3 Gene

Post-translational modifications for CHRNB3 Gene

  • Glycosylation at posLast=5151, posLast=138138, and posLast=166166
  • Modification sites at PhosphoSitePlus

Other Protein References for CHRNB3 Gene

No data available for DME Specific Peptides for CHRNB3 Gene

Domains & Families for CHRNB3 Gene

Gene Families for CHRNB3 Gene

Human Protein Atlas (HPA):
  • Predicted intracellular proteins
  • Predicted membrane proteins

Suggested Antigen Peptide Sequences for CHRNB3 Gene

GenScript: Design optimal peptide antigens:

Graphical View of Domain Structure for InterPro Entry



  • Belongs to the ligand-gated ion channel (TC 1.A.9) family. Acetylcholine receptor (TC 1.A.9.1) subfamily. Beta-3/CHRNB3 sub-subfamily.
  • Belongs to the ligand-gated ion channel (TC 1.A.9) family. Acetylcholine receptor (TC 1.A.9.1) subfamily. Beta-3/CHRNB3 sub-subfamily.
genes like me logo Genes that share domains with CHRNB3: view

Function for CHRNB3 Gene

Molecular function for CHRNB3 Gene

GENATLAS Biochemistry:
cholinergic receptor,nicotinic,beta 3 polypeptide,neuronal
UniProtKB/Swiss-Prot Function:
After binding acetylcholine, the AChR responds by an extensive change in conformation that affects all subunits and leads to opening of an ion-conducting channel across the plasma membrane.

Phenotypes From GWAS Catalog for CHRNB3 Gene

Gene Ontology (GO) - Molecular Function for CHRNB3 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0005230 extracellular ligand-gated ion channel activity IEA --
GO:0008144 drug binding IEA --
GO:0015267 channel activity TAS 7690916
GO:0015276 ligand-gated ion channel activity TAS --
GO:0022848 contributes_to acetylcholine-gated cation-selective channel activity IBA --
genes like me logo Genes that share ontologies with CHRNB3: view
genes like me logo Genes that share phenotypes with CHRNB3: view

Animal Models for CHRNB3 Gene

MGI Knock Outs for CHRNB3:

Clone Products

No data available for Enzyme Numbers (IUBMB) , Human Phenotype Ontology , miRNA , Transcription Factor Targets and HOMER Transcription for CHRNB3 Gene

Localization for CHRNB3 Gene

Subcellular locations from UniProtKB/Swiss-Prot for CHRNB3 Gene

Cell junction, synapse, postsynaptic cell membrane; Multi-pass membrane protein. Cell membrane; Multi-pass membrane protein.

Subcellular locations from

Extracellular space Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi Apparatus Nucleus Mitochondrion 0 1 2 3 4 5 Confidence
COMPARTMENTS Subcellular localization image for CHRNB3 gene
Compartment Confidence
plasma membrane 5
endoplasmic reticulum 1

Gene Ontology (GO) - Cellular Components for CHRNB3 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0005886 plasma membrane TAS --
GO:0005892 acetylcholine-gated channel complex IBA,IEA --
GO:0016020 membrane IEA --
GO:0016021 integral component of membrane NAS 8906617
GO:0030054 cell junction IEA --
genes like me logo Genes that share ontologies with CHRNB3: view

No data available for Subcellular locations from the Human Protein Atlas (HPA) for CHRNB3 Gene

Pathways & Interactions for CHRNB3 Gene

genes like me logo Genes that share pathways with CHRNB3: view

Gene Ontology (GO) - Biological Process for CHRNB3 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0006810 transport TAS 7690916
GO:0006811 ion transport IEA --
GO:0007165 signal transduction TAS 7690916
GO:0007271 synaptic transmission, cholinergic TAS 7690916
GO:0007274 neuromuscular synaptic transmission IBA --
genes like me logo Genes that share ontologies with CHRNB3: view

No data available for SIGNOR curated interactions for CHRNB3 Gene

Drugs & Compounds for CHRNB3 Gene

(4) Drugs for CHRNB3 Gene - From: DrugBank, ApexBio, and HMDB

Name Status Disease Links Group Role Mechanism of Action Clinical Trials
Ethanol Approved Pharma Target 2226
Galantamine Approved Pharma Target, allosteric modulator Acetylcholinesterase inhibitor 105
Nicotine Approved Pharma Antagonist, Target, agonist 1148
α-Conotoxin PIA Pharma 0

(1) ApexBio Compounds for CHRNB3 Gene

Compound Action Cas Number
α-Conotoxin PIA 669050-68-4
genes like me logo Genes that share compounds with CHRNB3: view

Drug Products

Transcripts for CHRNB3 Gene

mRNA/cDNA for CHRNB3 Gene

(3) REFSEQ mRNAs :
(6) Additional mRNA sequences :
(12) Selected AceView cDNA sequences:
(3) Ensembl transcripts including schematic representations, and UCSC links where relevant :

Unigene Clusters for CHRNB3 Gene

Cholinergic receptor, nicotinic, beta 3 (neuronal):
Representative Sequences:

Clone Products

Alternative Splicing Database (ASD) splice patterns (SP) for CHRNB3 Gene

ExUns: 1a · 1b ^ 2 ^ 3 ^ 4a · 4b ^ 5 ^ 6 ^ 7 ^ 8
SP1: - -
SP3: -

Relevant External Links for CHRNB3 Gene

GeneLoc Exon Structure for
ECgene alternative splicing isoforms for

Expression for CHRNB3 Gene

mRNA expression in normal human tissues from GTEx, Illumina, BioGPS, and CGAP SAGE for CHRNB3 Gene

mRNA differential expression in normal tissues according to GTEx for CHRNB3 Gene

This gene is overexpressed in Brain - Substantia nigra (x15.4), Brain - Cerebellar Hemisphere (x11.1), Brain - Cerebellum (x8.5), and Pancreas (x5.7).

NURSA nuclear receptor signaling pathways regulating expression of CHRNB3 Gene:


SOURCE GeneReport for Unigene cluster for CHRNB3 Gene:


Evidence on tissue expression from TISSUES for CHRNB3 Gene

  • Nervous system(4.3)
genes like me logo Genes that share expression patterns with CHRNB3: view

No data available for Protein differential expression in normal tissues , Protein expression , Protein tissue co-expression partners , mRNA Expression by UniProt/SwissProt and Phenotype-based relationships between genes and organs from Gene ORGANizer for CHRNB3 Gene

Orthologs for CHRNB3 Gene

This gene was present in the common ancestor of animals.

Orthologs for CHRNB3 Gene

Organism Taxonomy Gene Similarity Type Details
(Pan troglodytes)
Mammalia CHRNB3 33 34
  • 99.64 (n)
(Canis familiaris)
Mammalia CHRNB3 33 34
  • 86 (n)
(Monodelphis domestica)
Mammalia CHRNB3 34
  • 85 (a)
(Ornithorhynchus anatinus)
Mammalia CHRNB3 34
  • 83 (a)
(Bos Taurus)
Mammalia CHRNB3 33 34
  • 82.68 (n)
(Rattus norvegicus)
Mammalia Chrnb3 33
  • 82.58 (n)
(Mus musculus)
Mammalia Chrnb3 33 16 34
  • 81.98 (n)
(Gallus gallus)
Aves CHRNB3 33 34
  • 75.19 (n)
(Anolis carolinensis)
Reptilia CHRNB3 34
  • 86 (a)
tropical clawed frog
(Silurana tropicalis)
Amphibia chrnb3 33
  • 71.67 (n)
African clawed frog
(Xenopus laevis)
Amphibia chrnb3-prov 33
(Danio rerio)
Actinopterygii chrnb3b 34
  • 73 (a)
chrnb3a 33 34
  • 69.63 (n)
-- 33
fruit fly
(Drosophila melanogaster)
Insecta nAcRalpha-96Aa 35
  • 53 (a)
nAcRalpha-7E 35
  • 50 (a)
nAcRalpha-96Ab 35
  • 48 (a)
nAcRalpha-30D 35
  • 44 (a)
nAcRbgr-96A 35
  • 43 (a)
nAcRbgr-21C 35
  • 30 (a)
(Caenorhabditis elegans)
Secernentea unc-63 35
  • 44 (a)
acr-2 35
  • 40 (a)
acr-3 35
  • 38 (a)
lev-1 35
  • 38 (a)
unc-29 35
  • 37 (a)
ZK973.5 35
  • 35 (a)
acr-13 35
  • 32 (a)
acr-8 35
  • 32 (a)
F18G5.4 35
  • 31 (a)
acr-22 35
  • 29 (a)
Y73F8A.30 35
  • 29 (a)
acr-14 35
  • 28 (a)
Species where no ortholog for CHRNB3 was found in the sources mined by GeneCards:
  • A. gosspyii yeast (Ashbya gossypii)
  • Actinobacteria (Mycobacterium tuberculosis)
  • African malaria mosquito (Anopheles gambiae)
  • Alicante grape (Vitis vinifera)
  • alpha proteobacteria (Wolbachia pipientis)
  • amoeba (Dictyostelium discoideum)
  • Archea (Pyrococcus horikoshii)
  • baker's yeast (Saccharomyces cerevisiae)
  • barley (Hordeum vulgare)
  • beta proteobacteria (Neisseria meningitidis)
  • bread mold (Neurospora crassa)
  • 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 squirt (Ciona intestinalis)
  • sea squirt (Ciona savignyi)
  • 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)

Evolution for CHRNB3 Gene

Gene Tree for CHRNB3 (if available)
Gene Tree for CHRNB3 (if available)

Paralogs for CHRNB3 Gene

(18) SIMAP similar genes for CHRNB3 Gene using alignment to 1 proteins:

genes like me logo Genes that share paralogs with CHRNB3: view

Variants for CHRNB3 Gene

Sequence variations from dbSNP and Humsavar for CHRNB3 Gene

SNP ID Clin Chr 08 pos Sequence Context AA Info Type
rs1000002402 -- 42,702,759(+) TCTGT(A/C)TCAAA intron-variant
rs1000153408 -- 42,729,979(+) AGGCT(A/G)ACGAT intron-variant
rs1000225289 -- 42,695,747(+) GCCTG(A/G)AGGAT upstream-variant-2KB
rs1000426782 -- 42,713,981(+) TCCAG(A/G)AAACT intron-variant
rs1000600997 -- 42,734,093(+) TCTAC(G/T)AAAAA intron-variant

Structural Variations from Database of Genomic Variants (DGV) for CHRNB3 Gene

Variant ID Type Subtype PubMed ID
esv3617017 CNV loss 21293372
esv3617018 CNV loss 21293372
nsv1161758 CNV duplication 26073780
nsv397520 CNV deletion 16902084
nsv483102 CNV loss 15286789
nsv967583 CNV duplication 23825009
esv3572718 CNV loss 25503493
esv3572717 CNV loss 25503493
esv3543430 CNV deletion 23714750
esv3543429 CNV deletion 23714750
esv2668251 CNV deletion 23128226
esv2666038 CNV deletion 23128226
esv2662041 CNV deletion 23128226
dgv7186n100 CNV gain 25217958

Variation tolerance for CHRNB3 Gene

Residual Variation Intolerance Score: 61.2% of all genes are more intolerant (likely to be disease-causing)
Gene Damage Index Score: 3.26; 52.80% of all genes are more intolerant (likely to be disease-causing)

Relevant External Links for CHRNB3 Gene

Human Gene Mutation Database (HGMD)
SNPedia medical, phenotypic, and genealogical associations of SNPs for

No data available for Polymorphic Variants from UniProtKB/Swiss-Prot for CHRNB3 Gene

Disorders for CHRNB3 Gene

MalaCards: The human disease database

(6) MalaCards diseases for CHRNB3 Gene - From: HGMD, DISEASES, and GeneCards

Disorder Aliases PubMed IDs
duane retraction syndrome
  • duane's syndrome
autosomal dominant nocturnal frontal lobe epilepsy
  • epilepsy, nocturnal frontal lobe, 1
cocaine dependence
cannabis abuse
  • marijuana abuse
drug dependence
- elite association - COSMIC cancer census association via MalaCards

Relevant External Links for CHRNB3

Genetic Association Database (GAD)
Human Genome Epidemiology (HuGE) Navigator
Atlas of Genetics and Cytogenetics in Oncology and Haematology:
genes like me logo Genes that share disorders with CHRNB3: view

No data available for UniProtKB/Swiss-Prot and Genatlas for CHRNB3 Gene

Publications for CHRNB3 Gene

  1. Association of genes coding for the alpha-4, alpha-5, beta-2 and beta-3 subunits of nicotinic receptors with cigarette smoking and nicotine dependence. (PMID: 19482438) Etter JF … Bertrand D (Addictive behaviors 2009) 3 22 45 60
  2. Association of CHRN genes with "dizziness" to tobacco. (PMID: 19760673) Ehringer MA … Bierut LJ (American journal of medical genetics. Part B, Neuropsychiatric genetics : the official publication of the International Society of Psychiatric Genetics 2010) 3 45 60
  3. Sequence variants at CHRNB3-CHRNA6 and CYP2A6 affect smoking behavior. (PMID: 20418888) Thorgeirsson TE … Stefansson K (Nature genetics 2010) 3 45 60
  4. Multiple cholinergic nicotinic receptor genes affect nicotine dependence risk in African and European Americans. (PMID: 20584212) Saccone NL … Bierut LJ (Genes, brain, and behavior 2010) 3 45 60
  5. A large-scale candidate gene association study of age at menarche and age at natural menopause. (PMID: 20734064) He C … Hunter DJ (Human genetics 2010) 3 45 60

Products for CHRNB3 Gene

Sources for CHRNB3 Gene

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