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Immunogen sequence: FPRFLKSEIY KKLVNSQQVP NHK
Highest antigen sequence identity to the following orthologs: Mouse - 96%, Rat - 78%.
Regulator of G-protein signaling (RGS) proteins contain an 120 amino acid conserved domain, termed the RGS domain, that acts as a GTPase-activating protein that acts to reduce the signal transmitted by the receptor-activated G-alpha subunit. RGS21 is a recently identified member of this family that has been reported to be selectively expressed in subpopulations of taste bud cells and co-expressed with bitter and sweet transduction components such as alpha-gusticin, phospholipase Cbeta2, T1R2/T1R3 sweet taste receptors and T2R bitter taste receptors. Other reports indicate that RGS21 is more widely expressed. Binding assays demonstrate that RGS21 binds alpha-gusticin in a conformation-dependent manner and may do the same with T1R receptors, suggesting that RGS21 may play a role in sweet and bitter taste transduction processes.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Protein Aliases: Regulator of G-protein signaling 21; regulator of G-protein signalling 21; RGS21
Gene Aliases: RGS21
UniProt ID: (Human) Q2M5E4
Entrez Gene ID: (Human) 431704
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