"Such C-terminal sequences that conform to the “C-end rule” (CendR) are known to bind to and activate neuropilin (NRP1 and NRP2) receptors at the cell surface."

"Such C-terminal sequences that conform to the “C-end rule” (CendR) are known to bind to and activate neuropilin (NRP1 and NRP2) receptors at the cell surface." Sounds like we should add a CendR-cleaved S-protein to our vaccines...