Cell-penetrating peptides (CPPs), also known as protein transduction domains (PTDs) are short peptides that facilitate cellular uptake of various molecular entities or “cargo”, which are associated with the peptides either via a covalent bond or through non-covalent interaction.
AltaBioscience can provide CPPs from stock or as custom syntheses. Our stock cell penetrating peptides include TAT and Penetratin peptides as standard purified peptides, tagged with a fluorophore or in activated format ready for conjugation.
These peptides can also be supplied in activated form, ready for adding to any thiol containing cargo.