BIOINORGANIC CHEMISTRY A Short Course Second Edition

48 BIOCHEMISTRY FUNDAMENTALS

TABLE 2.2 Nitrogenous Bases, Nucleosides, Nucleotides and Sugars Found in DNA and
RNA

Base a Nucleoside Nucleotide Example Sugar

N

N NH

N

NH 2

1

(^67)
3 9
Adenine, A
Adenosine
(RNA) or
deoxyadenosine
(DNA)
Adenosine triphosphate
(ATP)
N
N N
N
NH 2
O
OH OH
H H
H H
O P O
O–
O

• O P
  O–

O

2

α, β phosphate

γ phosphate groups

group

β - D - 2 -

Deoxyribose b

in DNA or β -

D - Ribose c in

RNA

(^) OH
O
OH H
H H
H H
HO
1'
3' 2'
4'
5'
HN
N NH
N
O
H 2 N
1
3
(^67)
9
Guanine, G
Guanosine
(RNA) or
deoxyguanosine
(DNA)
Deoxyguanosine 5 ′ -
monophosphate (5 ′ - dGMP)
HN
N
N
O
H 2 N N
O
H
H H
H H
OH

• O P O

O

O–

β - D - 2 -

Deoxyribose b

in DNA or β -

D - Ribose c in

RNA

OH

O

OH OH

H H

H H

HO

1'

3' 2'

4'

5'

N

NH

NH 2

O

1

(^43)
2
Cytosine, C
Cytidine
(RNA) or
deoxycytidine
(DNA)
Deoxycytidine 3 ′ -
monophosphate (3 ′ - dCMP)
O
H
H H
H H
N
N
NH 2
O
O
O P
O–
O–
HO
β - D - 2 -
Deoxyribose b
in DNA or β -
D - Ribose c in
RNA