FRONTIERS IN BIOSCIENCE;
DATABASE; AMINO ACIDS



CLICK ON THE NAME OF THE AMINO ACID TO SEE THE 3D IMAGE
Name
Abbreviation		Mol WtpI CAS
Registry
Number 		Structure formula
Alanine
ala a 		89.09 6.00 56-41-7CH3-CH(NH2)-COOH
Arginine
arg r		174.2011.15 74-79-3HN=C(NH2)-NH-(CH2)3-CH(NH2)-COOH
Asparagine
asn n		132.12 5.41 5794-13-8 H2N-CO-CH2-CH(NH2)-COOH
Aspartic acid
asp d 		133.10 2.77 56-84-8 HOOC-CH2-CH(NH2)-COOH
Cysteine
cys c		121.15 5.02 52-90-4 HS-CH2-CH(NH2)-COOH
Glutamine
gln q		146.15 5.65 56-85-9H2N-CO-(CH2)2-CH(NH2)-COOH
Glutamic acid
glu e 		147.13 3.22 56-86-0HOOC-(CH2)2-CH(NH2)-COOH
Glycine
gly g		 75.07 5.97 56-40-6NH2-CH2-COOH
Histidine
his h 		155.16 7.47 71-00-1 N=C-NH-C=C-CH2-CH(NH2)-COOH
|________|
Isoleucine
ile i		131.17 5.94 73-32-5CH3-CH2-CH(CH3)-CH(NH2)-COOH
Leucine
leu l		131.17 5.98 61-90-5(CH3)2-CH-CH2-CH(NH2)-COOH
Lysine
lys k 		146.19 9.5939665-12-8 H2N-(CH2)4-CH(NH2)-COOH
Methionine
met m		149.21 5.74 63-68-3 CH3-S-(CH2)2-CH(NH2)-COOH
Phenylalanine
phe f		165.19 5.48 63-91-2 Ph-CH2-CH(NH2)-COOH
Proline
pro p		115.13 6.30 147-85-3 NH-(CH2)3-CH-COOH
|_________|
Serine
ser s 		105.09 5.68 56-45-1 HO-CH2-CH(NH2)-COOH
Threonine
thr t		119.12 5.64 72-19-5 CH3-CH(OH)-CH(NH2)-COOH
Tryptophan
trp w 		204.23 5.89 73-22-3 Ph-NH-CH-C-CH2-CH(NH2)-COOH
|_______|
Tyrosine
tyr y 		181.19 5.66 60-18-4HO-p-Ph-CH2-CH(NH2)-COOH
Valine
val v 		117.15 5.96 72-18-4CH3-CH(CH2)-CH(NH2)-COOH

Grouping of amino acids based on their charges, hydorphobicity and polarity

  • Non-polar
  • Hydrophobic
  • Negatively charged (acidic amino acids)
  • Polar
  • Hydrophilic
  • No charge (non-acidic amino acids)
  • Polar
  • Hydrophilic
  • Positively charged (basic amino acids; non-acidic amino acids)
  • Polar
  • Hydrophilic

Amino acid

pI

Amino acid

pI

Amino acid

pI

Amino acid

pI

Phenylalanine
phe f

5.48

Aspartic acid
asp d

2.77

Cysteine
cys c

5.02

Histidine
his h

7.47

Methionine
met m

5.74

Glutamic acid
glu e

3.22

Asparagine
asn n

5.41

Lysine
lys k

9.59

Tryptophan
trp w

5.89

    

Glutamine
gln q

5.65

Arginine
arg r

11.15

Isoleucine
ile i

5.94

   

Threonine
thr t

5.64

    

Valine
val v

5.96

   

Tyrosine
tyr y

5.66

   

Leucine
leu l

5.98

    

Serine
ser s

5.68

   

Alanine
ala a

6.00

   

Glycine
gly g

5.97

   

Proline
pro p

6.30