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Pwopriyete asid amine

nouvèl 1
Pwopriyete α-asid amine yo konplèks, men senplist nan ke chak molekil nan yon asid amine enplike de gwoup fonksyonèl: carboxyl (-COOH) ak amine (-NH2).
Chak molekil ka genyen yon chèn bò oswa yon gwoup R, pa egzanp Alanine se yon egzanp estanda asid amine ki gen gwoup chèn bò methyl.Gwoup R yo gen yon varyete de fòm, gwosè, chaj, ak reaktivite.Sa a pèmèt asid amine yo dwe gwoupe dapre pwopriyete chimik yo nan chenn bò yo.

Tablo abbreviyasyon komen asid amine ak pwopriyete yo

Non

Twa lèt kòd

Yon kòd lèt

Molekilè
Pwa

Molekilè
Fòmil

Rezid
Fòmil

Pwa rès
(-H2O)

pKa

pKb

pKx

pl

Alanine

Ala

A

89.10

C3H7NO2

C3H5NO

71.08

2.34

9.69

6.00

Arginine

Arg

R

174.20

C6H14N4O2

C6H12N4O

156.19

2.17

9.04

12.48

10.76

Asparagine

Asn

N

132.12

C4H8N2O3

C4H6N2O2

114.11

2.02

8.80

5.41

Asid aspartik

Asp

D

133.11

C4H7NO4

C4H5NO3

115.09

1.88

9.60

3.65

2.77

Sistein

Cys

C

121.16

C3H7NO2S

C3H5NOS

103.15

1.96

10.28

8.18

5.07

Asid glutamik

Glu

E

147.13

C5H9NO4

C5H7NO3

129.12

2.19

9.67

4.25

3.22

Glutamin

Gln

Q

146.15

C5H10N2O3

C5H8N2O2

128.13

2.17

9.13

5.65

Glisin

Gly

G

75.07

C2H5NO2

C2H3NO

57.05

2.34

9.60

5.97

Histidine

Li

H

155.16

C6H9N3O2

C6H7N3O

137.14

1.82

9.17

6.00

7.59

Hydroxyproline

Hyp

O

131.13

C5H9NO3

C5H7NO2

113.11

1.82

9.65

Isoleucine

Ile

I

131.18

C6H13NO2

C6H11NO

113.16

2.36

9.60

6.02

Leucine

Leu

L

131.18

C6H13NO2

C6H11NO

113.16

2.36

9.60

5.98

Lizin

Lys

K

146.19

C6H14N2O2

C6H12N2O

128.18

2.18

8.95

10.53

9.74

Metionin

Te rankontre

M

149.21

C5H11NO2S

C5H9NOS

131.20

2.28

9.21

5.74

Fenilalanin

Phe

F

165.19

C9H11NO2

C9H9NO

147.18

1.83

9.13

5.48

Proline

Pro

P

115.13

C5H9NO2

C5H7NO

97.12

1.99

10.60

6.30

Piroglutamatik

Glp

U

139.11

C5H7NO3

C5H5NO2

121.09

5.68

Serine

Ser

S

105.09

C3H7NO3

C3H5NO2

87.08

2.21

9.15

5.68

Treonin

Thr

T

119.12

C4H9NO3

C4H7NO2

101.11

2.09

9.10

5.60

Triptofan

Trp

W

204.23

C11H12N2O2

C11H10N2O

186.22

2.83

9.39

5.89

Tirozin

Tyr

Y

181.19

C9H11NO3

C9H9NO2

163.18

2.20

9.11

10.07

5.66

Valin

Val

V

117.15

C5H11NO2

C5H9NO

99.13

2.32

9.62

5.96

Asid amine yo se solid cristalline ki anjeneral idrosolubl epi sèlman ti kras disolubl nan solvang òganik.Solibilite yo depann de gwosè ak nati chèn bò a.Asid amine gen pwen k ap fonn trè wo, jiska 200-300 ° C.Lòt pwopriyete yo varye pou chak asid amine patikilye.


Tan pòs: Apr-19-2021