Related Clues:
- Organic acid type
- Protein constituent, informally
- One type of acid
- Powdered acid used as an insecticide
- The 28-Across in proteins
- Like protein-building acids
- Protein acid type
- With 67 Across, protein building block
- Acid with -NH2
- Of the fifth element
- ___ acids (protein building blocks)
- ___ acid (protein part)
- Acid also called aqua fortis
- Extermination acid
- ___ group (structure found in proteins)