Glucopyranose receptor site

The g-D-Glucopyranose Site. Since methyl o-D-glucopyranoside was the most stimulatory glucose derivative tested, the presence of an a-D-glucopyranose receptor site was suggested. This type of site has been postulated in the blowfly and flesh fly (24,31). 

Fic. 13.—Superpositioning of /3-d- and -L-Glucopyranose over the Same Receptor Site. 

Figure 5.4. Proposed binding of d- and L-p-glucopyranose with the three complementary binding sites of the sweet-taste protein receptor, and the binding of D-phenylalanine with the three sites, but the binding of L-phenylalanine with only two of the sites.

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