Two novel targeting peptide degrading proteases, PrePs, in mitochondria and chloroplasts, so similar and still different.
Ståhl A, Nilsson S, Lundberg P, Bhushan S, Biverståhl H, Moberg P, Morisset M, Vener A, Mäler L, Langel U, et al. J Mol Biol. 2005 Jun 17; 349(4):847-60.