Ptd-p65-p1 Peptide TFA is a nuclear transcription factor nf-kappab inhibitor, consisting of a membrane transport Peptide sequence derived from antennapedia linked to p65-p1, selectively inhibiting nf-kappab activity induced by various stimuli.

A highly potent and selective platelet activating factor (PAF) antagonist; inhibits PAF-induced aggregation of rabbit and human platelets with IC50s of 33 nM and 55 nM respectively.

Inhibitor of protein kinase C (PKC) ζ; attached to cell permeabilisation Antennapedia domain vector peptide. Consists of amino acids 113 - 129 of PKC ζ pseudosubstrate domain linked by a disulphide bridge to the Antennapedia domain vector peptide. The Antennapedia peptide is actively taken up by intact cells, at 4 or 37°C, ensuring rapid and effective uptake of the inhibitor peptide. Once inside the cell, the disulphide bonds are subjected to reduction in the cytoplasm leading to release of the inhibitor peptide. Induces mast cell degranulation by a PKC ζ-independent pathway.