| 930 / | HD | PEPTIDE OR PROTEIN SEQUENCE |
| DIG 532 | DD | CYCLIC PEPTIDES DERIVED FROM AT LEAST FIVE AMINO ACIDS AND CONTAINING AT LEAST ONE ABNORMAL PEPTIDE LINK (C07K-7/50) {2} |
| DIG 536 | | .~ With at least one abnormal peptide link in the ring (C07K-7/54) {2} |
| DIG 537 | DD | .~.~> The cyclisation not occurring through the 2,4-diamino-butanoic acid (C07K-7/56) {1} |
| DIG 542 | DD | .~.~> The cyclisation occurring through the 4-amino group of the 2,4-diamino butanoic acid (C07K-7/60) {1} |