Table 1.
Examples of antibacterial peptides isolated from different sources.
| PEPTIDES | ORIGIN | NUMBRR OF AMINO ACIDS IN MOLECULE | LITERATURE |
|---|---|---|---|
| α-helical | |||
| magainin 2 | frog | 23 | 6 |
| cecropin A | insects | 37 | 7 |
| LL-37 (cathelicidin) | human | 37 | 8 |
|
| |||
| β-sheet | |||
| α-defensins and β-defensins (containing three disulphide bonds) | human | 29–35 and 36–47 | 9, 10 |
| protegrin 1 (containing two disulphide bonds) | pig | 18 | 11, 12 |
|
| |||
| extended structure | |||
| indolicin (tryptophan and proline rich peptide) | bovine | 13 | 13 |
|
| |||
| Loop | |||
| (containing one disulphide bond) | |||
| Bactenecin | bovine | 12 | 14 |
| Lactoferricin | bovine | 25 | 15 |