BETP is a positive allosteric modulator of the GLP-1 receptor th at potentiates cAMP accumulation and glucose-dependent insulin release in pancreatic islet cells, in the presence of the weak GLP-1 metabolite, GLP-1(9-36). BETP has additive effects on the endogenous GLP-1 receptor ligand GLP-1(7-36).', 'BetP is a trimeric Na+-coupled betaine symporter. BetP belongs to the betaine-choline-carnitine transporter (BCCT) family. It controls transport activity in dependence of the cytoplasmic K+-concentration.
