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GLP-1, secreted from the intestinal L cells postprandially, acts both centrally and peripherally to exert its anorectic and metabolic effects
Flaig TW, Salzmann-Sullivan M, Su LJ, Zhang Z, Joshi M, Gijn MA, et al
When coupled to -arrestins, GPCRs are desensitized by abrogated coupling to G proteins and trafficked away from the cell surface, destined for either re-sensitization following their recycling back to the plasma membrane, or for final signal termination resulting from their degradation in lysosomes (McCorvy et al., 2017)
Besides chemoresistance, the ability to survive in hypoxia is also significant for tumor cells
The binding site is located near the extracellular face of the TMD, wedged between helices in a region that is not contacted by peptide agonists