20 AXIT AMIN I- Nhom axit amin trung tinh:
1/ Glixin ( Gly): H2N — CH2 — COOH
2/ Alanin ( Ala): H;N — CH ( CH3) - COOH
3/ Valin ( Val): CH; — CH — CH—- COOH
H; NH
4/ Leuxin ( Leu): CH; — HỘ CH) " COOH
5/ Izoleuxin ( Ileu): CH; — CH — CH; — CH— COOH
CH; NH
II- Nhom_axit amin ( va cac amit cua chung ) c6 tính axit :
6/ Axit,aspastic (Asp): HOOC — CH2 — CH — COOH
Ho 7/ Asparagin (Asn): ( là amitcủa Asp) NH;— CO —CH;— CH COOH
NH;
8/ Axit Glutamic (Glu): HOOC — CH2 — CH2 — CH — COOH
NH, 9/ Glutamin (Gln): HN — CO — CH2 — CH2 — CH — COOH
II- Nhóm axit amin có tính kiêm:
10 / Lyzin ( Lys): H2N — CH2 — CH2 — CH2 — CH2 — CH- COOH
NH;
11/ Arginin (Arg): H2N — C (NH)2 — CH2 — CH2 — CH2 — CH— COOH
NHÀ
V- Nhóm axit amin có chứa S:
12/ Xystéin (Xys): H2N — GH— COOH = (Tir 2 xystéin co thé tao ra
H, — SH xystin bang cdu noi S—S )
13/ Metionin ( Met ): CH3 — S — CH2 — CH2 —- CH— COOH
NH!
V- Nhom axit amin chirc nhom — OH:
H, —OH
15/ Treonin ( Tre ): CH; — CH — CH — COOH
Hp
V1 - Nhom axit amin vong:
16 /Phenilalanin: (Phe): HO — C¿H;—CH;-CH-COOH (para- hyđroxi )
H;
17/ Tyrézin ( Tyr ): HO — CoH — CH2— CH COOH — (meta—hyadroxi )
NH?
18/ Triptophan ( Trp): C;H:(NH) - CH: - CH- COOH
NH;
CH?