1. Catalysis and Peptide Research Unit
2. School of Health Sciences
3. University of Kwazulu-Natal
4. Durban 4001
5. South Africa
6. Institute for Research in Biomedicine-Barcelona
7. 08028-Barcelona
8. Spain
9. CIBER-BBN
10. Networking Centre on Bioengineering
11. Department of Chemistry
12. Faculty of Science
13. Alexandria University
14. Alexandria 21321
15. Egypt