PA transports from the outer to the inner mitochondrial membrane Authored: Williams, MG, 2011-09-14 Edited: Williams, MG, 2011-08-12 Phosphatidic acid (PA) transport within the mitochondrion occurs as free diffusion through the aqueous phase and not mediated by phospholipid transfer proteins. This event is inferred from rats (Chakraborty et al. 1999, Wojtczak et al. 1990). Pubmed10514455 Pubmed2344448 Reactome Database ID Release 431483099 Reactome, http://www.reactome.org ReactomeREACT_120748