1. Maurice Wilkins Centre, Biomolecular Interaction Centre; Christchurch 8140 New Zealand
2. Department of Chemistry; University of Canterbury; Christchurch 8140 New Zealand
3. Australian Synchrotron; Clayton, Melbourne Victoria 3168 Australia
4. Department of Biochemistry and Molecular Biology; Monash University; Clayton, Campus, Melbourne Victoria 3800 Australia
5. Biomolecular Interaction Centre and School of Biological Sciences; University of Canterbury; Christchurch 8140 New Zealand