title: Understanding the mechanism of sweet taste: synthesis of ultrapotent guanidinoacetic acid photoaffinity labeling reagents.
abstract: Azido-functionalized analogs of potently sweet guanidinoacetic acids have been synthesized for use as sweetener receptor photoaffinity labeling reagents. These compounds have been synthesized using readily available starting materials. One of the azido-labeled guanidinoacetic acids has been evaluated in an electrophysiological model in the Rhesus monkey. We found that the photoaffinity-labeling reagent caused irreversible inhibition in electrophysiological response to sweeteners upon exposure of the monkey tongue to a combination of the reagent and UV light.
authors.affiliation: NutraSweet Company, Mt. Prospect, Illinois 60056, USA.
authors.forename: S
authors.initials: S
authors.lastname: Nagarajan
authors.forename: M S
authors.initials: MS
authors.lastname: Kellogg
authors.forename: G E
authors.initials: GE
authors.lastname: DuBois
authors.forename: G
authors.initials: G
authors.lastname: Hellekant
mesh_terms: D000345:Affinity Labels / Q000138:chemical synthesis* / Q000737:chemistry; D000818:Animals; D001218:Aspartame / Q000494:pharmacology; D004594:Electrophysiology; D005998:Glycine / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000737:chemistry; D008253:Macaca mulatta; D010782:Photolysis; D013549:Sweetening Agents / Q000494:pharmacology; D013649:Taste / Q000187:drug effects / Q000502:physiology*; D013843:Thiazines / Q000494:pharmacology; D014059:Tongue / Q000187:drug effects / Q000502:physiology; D014466:Ultraviolet Rays
chemical_list: D000345:Affinity Labels; D013549:Sweetening Agents; D013843:Thiazines; C004946:glycocyamine; C006362:acetosulfame; D005998:Glycine; D001218:Aspartame