UBIQUITIN

Amino Acids

M.W. — molecular weight; M.P.—melting point; pKa — -log[Ka], A in cause of dyssociation equilibrium of acidic residue, B in cause of dyssociation equilibrium of basic residue, R in cause of dyssociation equilibrium of additional residue (basic or acidic); pI — isoelectric point.

Bolded are egzogenic amino acids.

(d) - melts with disintegration;

(t) - trans isomere.

 

All natural amino acids are L-form isomeres in Fisher projection (see below)[19,20]:

 

 

 

 

 

 

 

Peptide Bond formula (see below)[19,40]:

 

 

 

 

 

 

 

 

 

Usefull links where you can find additional information on amino acids:

 

- Structural and Functional Properties of the Amino Acids

 

- Amino Acids: general/chemistry/metabolism

 

 

 

Back to the TOP of the page

Home

General

References

Biological

Functions

Ubiquitilation

Structure

Abbreviations

Formula

Name

M.W.

[g/mol]

m.p.

[oC]

pKa

pI

A

R

B

AMINO ACIDS DIRECTLY CODED BY NUCLEIC ACIDS[19,20,40]  

A (Ala)

Alanine

89,09

297

2,34

-

9,87

6,11

R (Arg)

Arginine

174,2

238

2,00

8,97B

12,48

10,76

N (Asn)

Asparagine

 

132,12

236

2,22

-

8,83

5,41

D (Asp)

Aspartic acid

133,1

270

1,88

3,65A

9,60

2,85

C (Cys)

Cysteine

121,16

178

1,93

8,21B

10,28

5,05

Q (Gln)

Glutamine

146,15

185

2,17

-

9,13

5,65

E (Glu)

Glutaric acid

147,13

249

2,19

4,28A

9,72

3,15

G (Gly)

Glycine

75,07

290

2,34

-

9,78

6,06

H (His)

Histidine

155,16

277

1,81

6,05B

9,17

7,60

I (Ile)

Isoleucine

131,17

284

2,34

-

9,67

6,05

L (Leu)

Leucine

131,17

337

2,33

-

9,67

6,01

K (Lys)

Lysine

146,19

225

2,18

8,95B

10,53

9,60

M (Met)

Methionine

149,21

283

2,28

-

9,21

5,74

F (Phe)

Phenylalanine

165,19

284

1,83

-

9,15

5,49

P (Pro)

Proline

115,13

222

1,97

-

10,62

6,30

S (Ser)

Serine

105,09

228

2,21

-

9,15

5,68

T (Thr)

Threonine

119,12

253

2,09

-

9,10

5,60

W (Trp)

Tryptophan

204,23

282

2,43

-

9,44

5,89

Y (Tyr)

Tyrosine

181,19

344

2,20

9,11A

10,10

5,64

V (Val)

Valine

117,15

282

2,29

-

9,72

6,00

 MOST IMPORTANT AMINO ACIDS NOT CODED BY DNA BUT PRESENT IN ALIVE ORGANISMS[19,20,40]

- (Orn)

Ornitine

132,16

140

1,70

-

8,69

5,20

- (Hyp)

 

Hydroxyproline(t)

131,13

273 (d)

1,82

-

9,66

5,74

- (βAla)

β-Alanine

89,09

297

3,55

-

10,24

6,69

- ( - )

Cytruline

175,19

?

2,43

-

9,41

5,92

- ((Cys)2)

Cystine

240,31

258 (d)

-

-

-

4,60