1. School of Biosciences, Division of Molecular Cell Biology, University of Birmingham, Birmingham B15 2TT, UK
2. Department of Biochemistry, Ghent University and Flanders Interuniversity Institute for Biotechnology (VIB09), B-9052 Gent, Belgium
3. Centre for Neuromuscular and Neurological Disorders, University of Western Australia, Australian Neuromuscular Research Institute, Nedlands
4. Centre for Medical Research, West Australian Institute for Medical Research, QEII Medical Centre, Nedlands, WA 6009, Australia