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Aliases for GNAT3 Gene

Aliases for GNAT3 Gene

  • G Protein Subunit Alpha Transducin 3 2 3
  • Guanine Nucleotide Binding Protein, Alpha Transducing 3 2 3 5
  • Gustducin Alpha-3 Chain 3 4
  • Gustducin, Alpha Polypeptide 3
  • Gustatory G Protein 3
  • GDCA 3

External Ids for GNAT3 Gene

Previous GeneCards Identifiers for GNAT3 Gene

  • GC07M079700
  • GC07M079732
  • GC07M079925
  • GC07M080087
  • GC07M074691

Summaries for GNAT3 Gene

Entrez Gene Summary for GNAT3 Gene

  • Sweet, bitter, and umami tastes are transmitted from taste receptors by a specific guanine nucleotide binding protein. The protein encoded by this gene is the alpha subunit of this heterotrimeric G protein, which is found not only in the oral epithelium but also in gut tissues. Variations in this gene have been linked to metabolic syndrome. [provided by RefSeq, Dec 2015]

GeneCards Summary for GNAT3 Gene

GNAT3 (G Protein Subunit Alpha Transducin 3) is a Protein Coding gene. Among its related pathways are Platelet activation, signaling and aggregation and Signaling by GPCR. GO annotations related to this gene include GTP binding and signal transducer activity. An important paralog of this gene is GNAQ.

UniProtKB/Swiss-Prot for GNAT3 Gene

  • Guanine nucleotide-binding protein (G protein) alpha subunit playing a prominent role in bitter and sweet taste transduction as well as in umami (monosodium glutamate, monopotassium glutamate, and inosine monophosphate) taste transduction. Transduction by this alpha subunit involves coupling of specific cell-surface receptors with a cGMP-phosphodiesterase; Activation of phosphodiesterase lowers intracellular levels of cAMP and cGMP which may open a cyclic nucleotide-suppressible cation channel leading to influx of calcium, ultimately leading to release of neurotransmitter. Indeed, denatonium and strychnine induce transient reduction in cAMP and cGMP in taste tissue, whereas this decrease is inhibited by GNAT3 antibody. Gustducin heterotrimer transduces response to bitter and sweet compounds via regulation of phosphodiesterase for alpha subunit, as well as via activation of phospholipase C for beta and gamma subunits, with ultimate increase inositol trisphosphate and increase of intracellular Calcium. GNAT3 can functionally couple to taste receptors to transmit intracellular signal: receptor heterodimer TAS1R2/TAS1R3 senses sweetness and TAS1R1/TAS1R3 transduces umami taste, whereas the T2R family GPCRs act as bitter sensors. Functions also as lumenal sugar sensors in the gut to control the expression of the Na+-glucose transporter SGLT1 in response to dietaty sugar, as well as the secretion of Glucagon-like peptide-1, GLP-1 and glucose-dependent insulinotropic polypeptide, GIP. Thus, may modulate the gut capacity to absorb sugars, with implications in malabsorption syndromes and diet-related disorders including diabetes and obesity.

Tocris Summary for GNAT3 Gene

  • Heterotrimeric G proteins are membrane bound GTPases that are linked to 7-TM receptors. Each G protein contains an alpha-, beta- and gamma-subunit and is bound to GDP in the 'off' state. Ligand binding causes a receptor conformational change, detaching the G protein and switching it 'on'.

Gene Wiki entry for GNAT3 Gene

No data available for PharmGKB "VIP" Summary , fRNAdb sequence ontologies and piRNA Summary for GNAT3 Gene

Genomics for GNAT3 Gene

Regulatory Elements for GNAT3 Gene

Genomic Location for GNAT3 Gene

Chromosome:
7
Start:
80,457,292 bp from pter
End:
80,527,915 bp from pter
Size:
70,624 bases
Orientation:
Minus strand

Genomic View for GNAT3 Gene

Genes around GNAT3 on UCSC Golden Path with GeneCards custom track

Cytogenetic band:
GNAT3 Gene in genomic location: bands according to Ensembl, locations according to GeneLoc (and/or Entrez Gene and/or Ensembl if different)
Genomic Location for GNAT3 Gene
GeneLoc Logo Genomic Neighborhood Exon StructureGene Density

RefSeq DNA sequence for GNAT3 Gene

Proteins for GNAT3 Gene

  • Protein details for GNAT3 Gene (UniProtKB/Swiss-Prot)

    Protein Symbol:
    A8MTJ3-GNAT3_HUMAN
    Recommended name:
    Guanine nucleotide-binding protein G(t) subunit alpha-3
    Protein Accession:
    A8MTJ3
    Secondary Accessions:
    • A4D1B2
    • A4D1B3
    • B9EJG5

    Protein attributes for GNAT3 Gene

    Size:
    354 amino acids
    Molecular mass:
    40357 Da
    Quaternary structure:
    • G proteins are composed of 3 units; alpha, beta and gamma, respectively GNAT3, GNB1 and GNG13 for Gustducin heterotrimer for bitter taste transduction. The alpha chain contains the guanine nucleotide binding site. Gustducin heterotrimer may also be composed of GNAT3, GNB3 and GNG13.
    SequenceCaution:
    • Sequence=EAL24192.1; Type=Erroneous gene model prediction; Evidence={ECO:0000305}; Sequence=EAL24193.1; Type=Erroneous gene model prediction; Evidence={ECO:0000305};

neXtProt entry for GNAT3 Gene

Proteomics data for GNAT3 Gene at MOPED

Post-translational modifications for GNAT3 Gene

  • Potential N-myristoylation may anchor alpha-subunit to the inner surface of plasma membrane.
  • Modification sites at PhosphoSitePlus
  • Modification sites at neXtProt

Other Protein References for GNAT3 Gene

ENSEMBL proteins:
REFSEQ proteins:

Antibody Products

No data available for DME Specific Peptides for GNAT3 Gene

Domains & Families for GNAT3 Gene

Protein Domains for GNAT3 Gene

Suggested Antigen Peptide Sequences for GNAT3 Gene

GenScript: Design optimal peptide antigens:

Graphical View of Domain Structure for InterPro Entry

A8MTJ3

UniProtKB/Swiss-Prot:

GNAT3_HUMAN :
  • Belongs to the G-alpha family. G(i/o/t/z) subfamily.
Family:
  • Belongs to the G-alpha family. G(i/o/t/z) subfamily.
genes like me logo Genes that share domains with GNAT3: view

No data available for Gene Families for GNAT3 Gene

Function for GNAT3 Gene

Molecular function for GNAT3 Gene

UniProtKB/Swiss-Prot Function:
Guanine nucleotide-binding protein (G protein) alpha subunit playing a prominent role in bitter and sweet taste transduction as well as in umami (monosodium glutamate, monopotassium glutamate, and inosine monophosphate) taste transduction. Transduction by this alpha subunit involves coupling of specific cell-surface receptors with a cGMP-phosphodiesterase; Activation of phosphodiesterase lowers intracellular levels of cAMP and cGMP which may open a cyclic nucleotide-suppressible cation channel leading to influx of calcium, ultimately leading to release of neurotransmitter. Indeed, denatonium and strychnine induce transient reduction in cAMP and cGMP in taste tissue, whereas this decrease is inhibited by GNAT3 antibody. Gustducin heterotrimer transduces response to bitter and sweet compounds via regulation of phosphodiesterase for alpha subunit, as well as via activation of phospholipase C for beta and gamma subunits, with ultimate increase inositol trisphosphate and increase of intracellular Calcium. GNAT3 can functionally couple to taste receptors to transmit intracellular signal: receptor heterodimer TAS1R2/TAS1R3 senses sweetness and TAS1R1/TAS1R3 transduces umami taste, whereas the T2R family GPCRs act as bitter sensors. Functions also as lumenal sugar sensors in the gut to control the expression of the Na+-glucose transporter SGLT1 in response to dietaty sugar, as well as the secretion of Glucagon-like peptide-1, GLP-1 and glucose-dependent insulinotropic polypeptide, GIP. Thus, may modulate the gut capacity to absorb sugars, with implications in malabsorption syndromes and diet-related disorders including diabetes and obesity.

Gene Ontology (GO) - Molecular Function for GNAT3 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0001664 G-protein coupled receptor binding IBA --
GO:0031683 G-protein beta/gamma-subunit complex binding IEA,IBA --
genes like me logo Genes that share ontologies with GNAT3: view

Phenotypes for GNAT3 Gene

genes like me logo Genes that share phenotypes with GNAT3: view

Animal Models for GNAT3 Gene

MGI Knock Outs for GNAT3:

Animal Model Products

No data available for Enzyme Numbers (IUBMB) , Human Phenotype Ontology , miRNA , Transcription Factor Targets and HOMER Transcription for GNAT3 Gene

Localization for GNAT3 Gene

Subcellular locations from UniProtKB/Swiss-Prot for GNAT3 Gene

Cytoplasm. Note=Dual ditribution pattern; plasmalemmal pattern with apical region localization and cytosolic pattern with localization throughout the cytoplasm.

Subcellular locations from

COMPARTMENTS
Jensen Localization Image for GNAT3 Gene COMPARTMENTS Subcellular localization image for GNAT3 gene
Compartment Confidence
plasma membrane 5
cytosol 3
mitochondrion 2
cytoskeleton 1
extracellular 1
golgi apparatus 1
nucleus 1
peroxisome 1

Gene Ontology (GO) - Cellular Components for GNAT3 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0016324 apical plasma membrane IEA --
GO:0043234 protein complex IDA 18468998
genes like me logo Genes that share ontologies with GNAT3: view

Pathways & Interactions for GNAT3 Gene

genes like me logo Genes that share pathways with GNAT3: view

Pathways by source for GNAT3 Gene

Gene Ontology (GO) - Biological Process for GNAT3 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0006457 protein folding TAS --
GO:0007165 signal transduction IEA --
GO:0007186 G-protein coupled receptor signaling pathway IEA --
GO:0007193 adenylate cyclase-inhibiting G-protein coupled receptor signaling pathway TAS --
GO:0035094 response to nicotine IEA --
genes like me logo Genes that share ontologies with GNAT3: view

No data available for SIGNOR curated interactions for GNAT3 Gene

Drugs & Compounds for GNAT3 Gene

(2) Drugs for GNAT3 Gene - From: HMDB

Name Status Disease Links Group Role Mechanism of Action Clinical Trials
cyclic amp Experimental Pharma 0
calcium Nutra 0

(5) Additional Compounds for GNAT3 Gene - From: Tocris

Name Synonyms Role CAS Number PubChem IDs PubMed IDs
[D-Trp7,9,10]-Substance P
89430-38-6
mastoparan
72093-21-1
Mastoparan X
72093-22-2
NF 023
104869-31-0
SCH 202676 hydrobromide
265980-25-4
genes like me logo Genes that share compounds with GNAT3: view

Transcripts for GNAT3 Gene

mRNA/cDNA for GNAT3 Gene

(4) REFSEQ mRNAs :
(2) Additional mRNA sequences :
(1) Selected AceView cDNA sequences:
(1) Ensembl transcripts including schematic representations, and UCSC links where relevant :

Unigene Clusters for GNAT3 Gene

Guanine nucleotide binding protein, alpha transducing 3:
Representative Sequences:

Alternative Splicing Database (ASD) splice patterns (SP) for GNAT3 Gene

No ASD Table

Relevant External Links for GNAT3 Gene

GeneLoc Exon Structure for
GNAT3
ECgene alternative splicing isoforms for
GNAT3

Expression for GNAT3 Gene

mRNA expression in normal human tissues for GNAT3 Gene

mRNA differential expression in normal tissues according to GTEx for GNAT3 Gene

This gene is overexpressed in Small Intestine - Terminal Ileum (x13.7), Adipose - Visceral (Omentum) (x12.5), Testis (x10.6), and Thyroid (x6.1).

Protein differential expression in normal tissues from HIPED for GNAT3 Gene

This gene is overexpressed in Urinary Bladder (50.2) and Brain (12.6).

Integrated Proteomics: protein expression in normal tissues and cell lines from ProteomicsDB, PaxDb, MOPED, and MaxQB for GNAT3 Gene



SOURCE GeneReport for Unigene cluster for GNAT3 Gene Hs.335049

mRNA Expression by UniProt/SwissProt for GNAT3 Gene

A8MTJ3-GNAT3_HUMAN
Tissue specificity: Expressed in taste buds (sensory organs of clustered epithelial cells) of the circumvallate and foliate papillae of the tongue at protein level. Expressed in enteroendocrine L cells of the gut. Detected also in spermatozoa.
genes like me logo Genes that share expression patterns with GNAT3: view

Protein tissue co-expression partners for GNAT3 Gene

Primer Products

In Situ Assay Products

No data available for mRNA expression in embryonic tissues and stem cells from LifeMap Discovery for GNAT3 Gene

Orthologs for GNAT3 Gene

This gene was present in the common ancestor of eukaryotes.

Orthologs for GNAT3 Gene

Organism Taxonomy Gene Similarity Type Details
cow
(Bos Taurus)
Mammalia GNAT3 35
  • 93.03 (n)
  • 96.33 (a)
GNAT3 36
  • 89 (a)
OneToOne
dog
(Canis familiaris)
Mammalia GNAT3 35
  • 92.18 (n)
  • 96.89 (a)
GNAT3 36
  • 97 (a)
OneToOne
mouse
(Mus musculus)
Mammalia Gnat3 35
  • 88.04 (n)
  • 95.48 (a)
Gnat3 16
Gnat3 36
  • 95 (a)
OneToOne
chimpanzee
(Pan troglodytes)
Mammalia GNAT3 35
  • 99.72 (n)
  • 100 (a)
GNAT3 36
  • 100 (a)
OneToOne
rat
(Rattus norvegicus)
Mammalia Gnat3 35
  • 88.42 (n)
  • 95.76 (a)
oppossum
(Monodelphis domestica)
Mammalia GNAT3 36
  • 94 (a)
OneToOne
platypus
(Ornithorhynchus anatinus)
Mammalia GNAT3 36
  • 88 (a)
OneToOne
chicken
(Gallus gallus)
Aves GNAT3 35
  • 78.63 (n)
  • 81.92 (a)
GNAT3 36
  • 82 (a)
OneToOne
lizard
(Anolis carolinensis)
Reptilia GNAT3 36
  • 85 (a)
OneToOne
zebrafish
(Danio rerio)
Actinopterygii gnao1b 36
  • 60 (a)
ManyToMany
fruit fly
(Drosophila melanogaster)
Insecta G-oalpha47A 36
  • 58 (a)
OneToMany
worm
(Caenorhabditis elegans)
Secernentea goa-1 36
  • 56 (a)
OneToMany
thale cress
(Arabidopsis thaliana)
eudicotyledons GP ALPHA 1 35
  • 51.34 (n)
  • 39.37 (a)
rice
(Oryza sativa)
Liliopsida Os05g0333200 35
  • 52.96 (n)
  • 41.42 (a)
Species with no ortholog for GNAT3:
  • 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)
  • 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 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)
  • tomato (Lycopersicon esculentum)
  • toxoplasmosis (Toxoplasma gondii)
  • Trichoplax (Trichoplax adhaerens)
  • tropical clawed frog (Silurana tropicalis)
  • wheat (Triticum aestivum)

Evolution for GNAT3 Gene

ENSEMBL:
Gene Tree for GNAT3 (if available)
TreeFam:
Gene Tree for GNAT3 (if available)

Paralogs for GNAT3 Gene

Paralogs for GNAT3 Gene

(19) SIMAP similar genes for GNAT3 Gene using alignment to 1 proteins:

genes like me logo Genes that share paralogs with GNAT3: view

Variants for GNAT3 Gene

Sequence variations from dbSNP and Humsavar for GNAT3 Gene

SNP ID Clin Chr 07 pos Sequence Context AA Info Type
rs813349 -- 80,456,904(+) ggcat(A/G)agcca downstream-variant-500B
rs813888 -- 80,459,040(+) CTCCC(A/G)GTGGC intron-variant
rs799927 -- 80,465,291(+) AGATC(A/G)TGACT intron-variant
rs799928 -- 80,466,773(+) ACTCA(A/G)TGGCT intron-variant
rs799929 -- 80,468,260(+) ATCAC(A/G)TGAGA intron-variant

Structural Variations from Database of Genomic Variants (DGV) for GNAT3 Gene

Variant ID Type Subtype PubMed ID
nsv888512 CNV Loss 21882294
nsv831042 CNV Gain 17160897
nsv888523 CNV Loss 21882294
nsv888524 CNV Gain 21882294
nsv831043 CNV Loss 17160897
nsv464604 CNV Loss 19166990
esv2734733 CNV Deletion 23290073
esv2734734 CNV Deletion 23290073
esv2734735 CNV Deletion 23290073
esv2734736 CNV Deletion 23290073
esv3363 CNV Deletion 18987735
nsv365325 CNV Loss 16902084

Variation tolerance for GNAT3 Gene

Residual Variation Intolerance Score: 63.9% of all genes are more intolerant (likely to be disease-causing)
Gene Damage Index Score: 2.11; 38.46% of all genes are more intolerant (likely to be disease-causing)

Relevant External Links for GNAT3 Gene

HapMap Linkage Disequilibrium report
GNAT3

No data available for Polymorphic Variants from UniProtKB/Swiss-Prot for GNAT3 Gene

Disorders for GNAT3 Gene

Relevant External Links for GNAT3

Genetic Association Database (GAD)
GNAT3
Human Genome Epidemiology (HuGE) Navigator
GNAT3
Atlas of Genetics and Cytogenetics in Oncology and Haematology:
GNAT3

No disorders were found for GNAT3 Gene.

No data available for MalaCards , UniProtKB/Swiss-Prot and Genatlas for GNAT3 Gene

Publications for GNAT3 Gene

  1. Gut-expressed gustducin and taste receptors regulate secretion of glucagon-like peptide-1. (PMID: 17724330) Jang H.-J. … Egan J.M. (Proc. Natl. Acad. Sci. U.S.A. 2007) 3 4 23 67
  2. Colocalization of the alpha-subunit of gustducin with PYY and GLP-1 in L cells of human colon. (PMID: 16728727) Rozengurt N. … Rozengurt E. (Am. J. Physiol. 2006) 3 23
  3. Ggamma13 colocalizes with gustducin in taste receptor cells and mediates IP3 responses to bitter denatonium. (PMID: 10570481) Huang L. … Margolskee R.F. (Nat. Neurosci. 1999) 3 23
  4. The BioPlex Network: A Systematic Exploration of the Human Interactome. (PMID: 26186194) Huttlin E.L. … Gygi S.P. (Cell 2015) 3
  5. Metabolic syndrome is linked to chromosome 7q21 and associated with genetic variants in CD36 and GNAT3 in Mexican Americans. (PMID: 22456541) Farook V.S. … Duggirala R. (Obesity (Silver Spring) 2012) 3

Products for GNAT3 Gene

Sources for GNAT3 Gene

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