Biology
Pie Chart of Amino Acids by Type
Last reviewed on 2026-05-22.
Biology — verifiable data, editable template
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The 20 standard amino acids that build human proteins fall into chemical groups: nonpolar (hydrophobic), polar uncharged, positively charged, and negatively charged.
The data
- Nonpolar (hydrophobic) — 9 amino acids
- Polar uncharged — 6 amino acids
- Positively charged — 3 amino acids
- Negatively charged — 2 amino acids
Source
Standard biochemistry references.
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