Going against the classical model of β-arrestin–mediated internalization and downregulation of GPCRs, FRET, FRAP and time-lapse imaging show that PTHR remains active when bound to β-arrestin and is ultimately terminated by retromer complex, a complex involved in transport from endosomes to the Golgi.
- Timothy N Feinstein
- Vanessa L Wehbi
- Jean-Pierre Vilardaga