Dear Scientists and colleagues,

Im looking for a protease (every host is welcome) which cleaves specific at the N-terminus of its protease cleavage site, resulting in no additional amino acid residue (aa) at the C-terminus of target after cleavage (P1` site is the first aa of cleavage site and P1 is final C- terminal aa of target protein (...P3P2P1/P1P2P3...)).
Has anyone an idea where such protease is available, or does anyone know a host (vegetable, viral, mammalian or bacterial origin) producing such protease with this feature?

Thanks for your collaboration and for your efforts,
Best, MK.