Collection: Cell penetrating peptides

Cell-penetrating peptides (CPPs) are short peptides that can deliver a wide range of macromolecular cargo, e.g. peptides, proteins, nucleic acids, nanoparticles and other small molecules, into cells across the cell membrane.

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.

Supplied freeze-dried, purified and ready to ship in amounts from 0.5mg to 5mg. Each peptide is supplied with a Certificate of Analysis, which includes mass spectrometry and HPLC data. We also offer activated forms of these peptides, ready for adding to any thiol-containing cargo.

We also offer custom peptide – DNA conjugates.

We offer substantial discounts on larger quantities, so please request a quote online or email

Additional information

Should you require any assistance or have questions about cell-penetrating peptides or their applications, our expert team is readily available to provide guidance and advice or to discuss custom peptide - DNA conjugate requirements.

For advice or further information, contact one of our experts at +44 (0) 1527 584495 or email us at

Join our growing list of satisfied customers who have come to rely on our commitment to quality, reliability, and customer satisfaction.