1. Aminokiseline kao gradivne
jedinice proteina

2.  Nemaju biološku aktivnost
 Ulaze u sastav proteina
 Proteios (prvi, najvažniji)
 1908. – asparagin
 20 aminokiselina
 α-aminokiseline
 L- oblici
NH2 CHO
R-C-H HO - C - H
CH2OH
COOH
L-gliceraldehid

3.  Podela:
1. sa nepolarnim (hidrofobnim ) bocnim nizom
H-CH-COOH CH3-CH-COOH CH3-CH-CH-COOH CH3-CH-CH2-CH-COOH
NH2 NH2 CH3 NH2 CH3 NH2
glicin (Gly) alanin (Ala) valin (Val) leucin (Leu)
CH3CH2CH-CH-COOH CH2 CH2
CH3 NH2 CH2 CH -COOH
izoleucin (Ile) NH prolin (Pro)
2. sa aromaticnim bocnim nizom
-CH2-CH-COOH HO- -CH2-CH-COOH -CH2-CH-COOH
NH2 NH2 NH2
N
tirozin (Tyr)
fenialanin (Phe) H triptofan (Trp)
3. sa baznim bocnim nizom
H2N(CH2)4CH-COOH H2N-C-NH(CH2)3-CH-COOH N -CH2-CH-COOH
NH2 NH NH2 NH2
lizin (Lys) arginin (Arg) N
histidin (His)
H
4. sa kiselinskim ostatkom u bocnom nizu
HOOC-CH2-CH-COOH HOOC-CH2-CH2-CH-COOH
NH2 NH2
asparaginska kiselina (Asp) glutaminska kiselina (Glu)

4. 5. sa amidnim ostatkom u bocnom nizu
H2N-C-CH2-CH-COOH H2N-C-CH2-CH2-CH-COOH
O NH2 O NH 2
asparagin (Asn) glutamin (Gln)
Esencijalne aminokiseline,
6. sa -OH grupom u bocnom nizu
10, unose se hranom
HO-CH2-CH-COOH HO-CH-CH-COOH
NH2 CH3 NH2
serin (Ser) treonin (Thr)
7. sa S u bocnom nizu
HS-CH2-CH-COOH CH3-S-CH2-CH2-CH-COOH
NH2 NH2
metionin (Met)
cistein (Cys)
Retke aminokiseline:
retke aminokiseline- 5-hidroksilizin
H2N-CH2-CH-CH2-CH2-CH-COOH
OH NH2