S1 Electronic Supplementary Information for Aptamer-mediated ‘turn-off/turn-on’ nanozyme activity of gold nanoparticles for kanamycin detection Tarun Kumar Sharma, a,b, * Rajesh Ramanathan, a Pabudi Weerathunge, a Mahsa Mohammadtaheri, a Hemant Kumar Daima, a,c Ravi Shukla a and Vipul Bansal a ,* a Ian Potter NanoBioSensing Facility, NanoBiotechnology Research Laboratory, School of Applied Science, RMIT University, GPO Box 2476V, Melbourne VIC 3001, Australia. b Centre for Biodesign and Diagnostics, Translational Health Science and Technology Research Institute, Gurgaon, Haryana 247667, India. c Department of Biotechnology, Siddaganga Institute of Technology, Tumkur, Karnataka 572103, India. *Email: vipul.bansal@rmit.edu.au (V. B.); tarun@thsti.res.in (T. K. S.) Fax: +61 3 99253747; Tel: +61 3 99252121 Electronic Supplementary Material (ESI) for ChemComm. This journal is © The Royal Society of Chemistry 2014