| 930 / | HD | PEPTIDE OR PROTEIN SEQUENCE |
| DIG 780 | DD | TETRAPEPTIDES (DERIVED FROM ONLY FOUR AMINO ACIDS) (C07K-5/10) {6} |
| DIG 784 | DD | .~ The first amino acid contains the same number of amino and carboxylic acid or derivative groups (neutral) (C07K-5/10A) {2} |
| DIG 786 | | .~.~ And carbocyclic ring (Phe) (C07K-5/10A2) |