| Surface proteomics, endogenous protein |
cell surface / plasma membrane |
needs cell-type context |
| Endogenous receptor uptake |
receptor internalization |
cargo uptake alone is a delivery phenotype |
| Receptor tracked to lysosome |
routing annotations |
not if only the payload was tracked |
| Perturbation screen hits |
trafficking machinery review |
separate direct from viability effects |
| Expected receptor fails to internalize |
NOT, rarely |
failed delivery is not enough |