Recombinant Mouse Gnat3 Protein, Myc/DDK-tagged

• Cat.No.: Gnat3-3260M
• Product Overview: Purified recombinant protein of mouse full-length guanine nucleotide binding protein, alpha transducing 3 (Gnat3), with C-terminal MYC/DDK tag, expressed in HEK293T cells.

Specification

• Description: 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.
• Source: HEK293T
• Species: Mouse
• Tag: Myc/DDK
• Molecular Mass: 40.8 kDa
• Purity: > 80% as determined by SDS-PAGE and Coomassie blue staining
• Stability: Stable for 12 months from the date of receipt of the product under proper storage and handling conditions. Avoid repeated freeze-thaw cycles.
• Storage: Store at -80 centigrade after receiving vials.
• Concentration: >50 μg/mL as determined by microplate BCA method
• Storage Buffer: 25 mM Tris.HCl, pH 7.3, 100 mM glycine, 10% glycerol.

Gene Information

• Gene Name: Gnat3 guanine nucleotide binding protein, alpha transducing 3 [ Mus musculus (house mouse) ]
• Official Symbol: Gnat3
• Synonyms: GNAT3; guanine nucleotide binding protein, alpha transducing 3; guanine nucleotide-binding protein G(t) subunit alpha-3; alpha-gustducin; gustducin alpha-3 chain; Gtn; Ggust
• Gene ID: 242851
• mRNA Refseq: NM_001081143
• Protein Refseq: NP_001074612
• UniProt ID: Q3V3I2