Class VI myosin moves processively along actin filaments backward with large steps.
Nishikawa S, Homma K, Komori Y, Iwaki M, Wazawa T, Hikikoshi Iwane A, Saito J, Ikebe R, Katayama E, Yanagida T, et al. Biochem Biophys Res Commun. 2002 Jan 11; 290(1):311-7.