1. Peptide Science Laboratory, School of Chemistry and PhysicsUniversity of KwaZulu-Natal Durban 4001 South Africa
2. KRISP, School of Laboratory of Medicine and Medical Sciences College of Health SciencesUniversity of KwaZulu-Natal Westville Durban 4001 South Africa
3. Department of Organic ChemistryUniversity of Barcelona Martí i Franqués 1–11 Barcelona 08028 Spain
4. CIBER-BBNNetworking Centre on Bioengineering, Biomaterials and Nanomedicine IQAC, CSIC Jordi Girona Barcelona 08028 Spain