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Feartan amino-aigéid

naidheachdan 1
Tha feartan α-amino-aigéid iom-fhillte, ach simplidh leis gu bheil gach moileciuil de aminoidid a’ toirt a-steach dà bhuidheann gnìomh: carboxyl (-COOH) agus amino (-NH2).
Faodaidh slabhraidh taobh no buidheann R a bhith anns gach moileciuil, me tha Alanine na eisimpleir de aminoidid àbhaisteach anns a bheil buidheann slabhraidh taobh methyl.Tha measgachadh de chumaidhean, mheudan, chosgaisean agus ath-ghnìomhachd aig na buidhnean R.Leigidh seo le amino-aigéid a bhith air an cruinneachadh a rèir feartan ceimigeach nan slabhraidhean taobh aca.

Clàr de na giorrachaidhean agus feartan cumanta amino acid

Ainm

Còd trì litrichean a

Còd aon litir

Moileciuil
Cuideam

Moileciuil
Foirmle

Fuigheall
Foirmle

Cuideam fuigheall
(-H2O)

pKa

pKb

pKx

pl

Ailein

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

Aspartic acid

Asp

D

133.11

C4H7NO4

C4H5NO3

115.09

1.88

9.60

3.65

2.77

Cistine

Cias

C

121.16

C3H7NO2S

C3H5NOS

103.15

1.96

10.28

8.18

5.07

Glutamic acid

Glu

E

147.13

C5H9NO4

C5H7NO3

129.12

2.19

9.67

4.25

3.22

Glutamine

Gln

Q

146.15

C5H10N2O3

C5H8N2O2

128.13

2.17

9.13

-

5.65

Glicine

Glic

G

75.07

C2H5NO2

C2H3NO

57.05

2.34

9.60

-

5.97

Histidine

A chuid

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

leù

L

131.18

C6H13NO2

C6H11NO

113.16

2.36

9.60

-

5.98

Lisín

Lys

K

146.19

C6H14N2O2

C6H12N2O

128.18

2.18

8.95

10.53

9.74

Methionine

Choinnich

M

149.21

C5H11NO2S

C5H9NOS

131.20

2.28

9.21

-

5.74

Phenylalanine

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

Pyroglutamatic

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

Threonine

Thr

T

119.12

C4H9NO3

C4H7NO2

101.11

2.09

9.10

-

5.60

Tryptophan

Trp

W

204.23

C11H12N2O2

C11H10N2O

186.22

2.83

9.39

-

5.89

Tyrosine

Tìr

Y

181.19

C9H11NO3

C9H9NO2

163.18

2.20

9.11

10.07

5.66

Valine

Val

V

117.15

C5H11NO2

C5H9NO

99.13

2.32

9.62

-

5.96

Is e solidan criostalach a th’ ann an amino-aigéid a tha mar as trice so-sgaoilte ann an uisge agus nach eil ach gu math so-sgaoilte ann an solventan organach.Tha an sùbailteachd aca an urra ri meud agus nàdar na slabhraidh taobh.Tha puingean leaghaidh fìor àrd aig amino-aigéid, suas gu 200-300 ° C.Tha na feartan eile aca ag atharrachadh airson gach aminoidid sònraichte.


Ùine puist: Giblean-19-2021