1. School of Chemistry, Pharmacy and Food Biosciences, University of Reading, Whiteknights,
Reading, Berkshire RG6 6AD, U.K.
2. Department of Pharmacy and Research Centre on Bioactive Peptides (CIRPeB), University of Naples “Federico II”, Via Domenico Montesano 49, Naples 80131, Italy
3. Departamento de Biofísica, Universidade Federal de São Paulo, São Paulo 04023-062, Brazil
4. Nanomicroscopy Center, Aalto University, Puumiehenkuja 2, Espoo FIN-02150, Finland