Rb744-061208-WS

A synthetic peptide from the internal region of mouse GNAT3 conjugated to blue carrier protein was used as the antigen. The antigen shares 87% identity with the rat sequence.

GNAT3_MOUSE
GNAT3_RAT

Gnat3, Guanine nucleotide-binding protein G(t) subunit alpha-3

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, denatonuim 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.
Subcellular location: cytoplasm
Tissue specificity: Expressed in taste buds (sensory organs of clustered epithelial cells) of the circumvallate and fungiform papillae of the tongue as well as in palatal taste buds at protein level. Expressed in enteroendocrine cells of the gut, such as in subsets of enteroendocrine cells in the midjejunum and brush cells. Detected also in spermatozoa.

Maintain the lyophilised/reconstituted antibodies frozen at -20C for long term storage and refrigerated at 2-8C for a shorter term. When reconstituting, glycerol (1:1) may be added for an additional stability. Avoid freeze and thaw cycles.

12 months after reconstitution

This item will be shipped to you at ambient temperature in a lyophilised form.

1. Carninci P, et al. Science 309:1559-1563(2005)

For research use only

100 ul

Unconjugated antibody

NZ white rabbit

Whole serum

Polyclonal

Polyclonal, whole serum

IHC, WB. A dilution of 1 : 1000 to 1 : 2000 is recommended. The optimal dilution should be determined by the end user. Not yet tested in other applications.

Specific for GNAT3.

Mouse, rat. Other species not yet tested.

Lyophilised. This product contains 0.02% benzalkonium chloride.

Reconstitute in 100 ul of sterile water. Centrifuge to remove any insoluble material.

Control peptide is available at $120 per 50 μg. Please enquire sales@osenses.com

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