Roßmann and colleagues report a simple strategy to generate a panel of fluorescent HaloTag Ligands that enable visualisation of cell surface proteins at low concentrations and with brief incubation times. They use these probes to label neuromodulatory receptors in neurons, allowing for the distinction of surface versus internal receptors of the presynaptic terminal.
- Kilian Roßmann
- Ulrich Pabst
- Johannes Broichhagen