This paper (J. Mol. Cell Biol. (2013), 5(2), 120–131; doi:10.1093/jmcb/mjt005), together with its corrigendum (J. Mol. Cell Biol. (2014), 6(6): 535–536; doi: 10.1093/jmcb/mju043) have been retracted by the three last authors and the journal's Editor-in-Chief due to inaccurate figure handling and assembly made by the first author Apiruck Watthanasurorot. The first author has admitted responsibility for these anomalies. The authors apologize to the readers and editors of J. Mol. Cell Biol. for any inconvenience caused.