Non-polar(hydrophobic)
| ||||
 |  |  |  |  |
| Alanine
(Ala or A)
| Valine
(Val or V)
| Leucine
(Leu or L)
| Isoleucine
(Ile or I)
| Methionine
(Met or M)
|
 |  |  | ||
| Phenylalanine
(Phe or F)
| Tryptophan
(Trp or W)
| Proline
(Pro or P)
| ||
Polar(hydrophilic)
| ||||
 |  |  |  |  |
| Glycine
(Gly or G)
| Serine
(Ser or S)
| Threonine
(Thr or T)
| Cysteine
(Cys or C)
| Tyrosine
(Tyr or Y)
|
 |  | |||
| Asparagine
(Asn or N)
| Glutamine
(Gln or Q)
| |||
Ionized
| ||||
Basic(positively charged)
|
Acidic(negatively charged)
| |||
 |  |  |  |  |
| Lysine
(Lys or K)
| Arginine
(Arg or R)
| Histidine
(Arg or H)
| Aspartate
(Asp or D)
| Glutamate
(Glu or E)
|
- 根據其結合基團(side chain)不同的胺基酸分類：
- 脂肪族胺基酸(aliphatic amino acid)：A, V, L, I, M, P, G。
- 芳香族胺基酸(aromatic amino acid)：F, W, Y。
- 雜環族胺基酸(heterocyclic amino acid)：W, H。
- 雜環亞胺基酸(heterocyclic imino acid)：P。
- 含醯胺基(amidic)：N, Q。
- 含羥基(hydroxylic)：S, T。
- 含硫(surfur-containing)：M, C。
- 根據人體所需的胺基酸分類：可將胺基酸分為非必需胺基酸和必需胺基酸兩大類。
- 必須胺基酸(essential amino acid)：V, I, L, M, F, T, Y, K, (H)。
- Adults can produce histidine on their own, but infants need it supplied in their diet.
註：「細胞每一分、每一秒都在進行500多個反應，而且都沒有亂掉，所以如果偷懶，一定要向自己的細胞懺悔。」
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