part of 9+2 motile cilium paraflagellar rod pr GO:0097740 PFR A large lattice-like axial structure found in some flagellated protists which extends alongside the axoneme. Protein components of the paraflagellar rod are likely implicated, among other, in adenine nucleotide signaling and metabolism, and in calcium signaling. 2016-10-19T11:30:08Z cellular_component supramolecular complex