PKN-1, a homologue of mammalian PKN, is involved in the regulation of muscle contraction and force transmission in C. elegans.
Qadota H, Miyauchi T, Nahabedian JF, Stirman JN, Lu H, Amano M, Benian GM, Kaibuchi K. J Mol Biol. 2011 Mar 25; 407(2):222-31. Epub 2011 Jan 26.