Write out 20 structures of proteinogenic amino acids

Here are 20 structures of proteinogenic amino acids. I'll represent the general amino acid structure as R-CH(NH₂)-COOH, where R is the side chain.

1. Alanine (Ala, A): R = -H
2. Cysteine (Cys, C): R = -CH₂-SH
3. Aspartic Acid (Asp, D): R = -CH₂-COOH
4. Glutamic Acid (Glu, E): R = -CH₂-CH₂-COOH
5. Phenylalanine (Phe, F): R = -CH₂-C₆H₅ (phenyl group)
6. Glycine (Gly, G): R = -H (This is the simplest, with R = H)
7. Histidine (His, H): R = -CH₂-(C₃H₃N₂) (imidazole ring)
8. Isoleucine (Ile, I): R = -CH(CH₃)CH₂CH₃
9. Lysine (Lys, K): R = -(CH₂)₄-NH₂
10. Leucine (Leu, L): R = -CH₂-CH(CH₃)₂
11. Methionine (Met, M): R = -CH₂-CH₂-S-CH₃
12. Asparagine (Asn, N): R = -CH₂-CO-NH₂
13. Proline (Pro, P): This is unique as the R group forms a ring with the amino group. The structure is a pyrrolidine ring.
14. Glutamine (Gln, Q): R = -CH₂-CH₂-CO-NH₂
15. Arginine (Arg, R): R = -CH₂-CH₂-CH₂-NH-C(NH)-NH₂
16. Serine (Ser, S): R = -CH₂-OH
17. Threonine (Thr, T): R = -CH(OH)CH₃
18. Valine (Val, V): R = -CH(CH₃)₂
19. Tryptophan (Trp, W): R = -CH₂-(C₈H₆N) (indole ring)
20. Tyrosine (Tyr, Y): R = -CH₂-C₆H₄-OH (p-hydroxyphenyl group)