- Plesiocystis pacifica gen. nov., sp. nov., a marine myxobacterium that contains dihydrogenated menaquinone, isolated from the Pacific coasts of Japan. Iizuka, T., Jojima, Y., Fudou, R., Hiraishi, A., Ahn, J.W., Yamanaka, S. Int. J. Syst. Evol. Microbiol. (2003)