Page 378 - Color Atlas of Biochemistry

Vitamins 369

A. Water-soluble vitamins II

* Adult daily Vitamin Active form: Function in
*requirement coenzyme metabolism
B 6 O H
C
Pyridoxal Activation
HO CH OH Pyridoxol PLP of amino
2
Pyridoxamine acids
Pyridoxal
H C N Pyridoxal 2 mg* phosphate
3
Meat
Vegetables
Grain products
B 12 H 2 N
H 2 N C O
C O
5-Deoxy- Isomerization
H 3 C H 3 C X Cobalamine adenosyl e.g.
H 3 C O cobalamine
H 2 N N C
C NH 2 0.002 mg*
N Co 2 N CH 3
O NH 2 H H O
HN C H 3 C N C Meat
H 2 C O CH 3 O Liver H C C C S A
CH 3
H 3 C CH N CH 3 Milk
CH 3 Eggs H COO
O
O P O N H 3 C C Methylmalonyl CoA
O NH 2
O HO

O
HO CH 2 O H H
S C C C H
A
H COO
Succinyl CoA

C HO O
Stabilization
of enzyme
Ascorbic acid Ascorbate systems,
O
HO coenzyme,
60 mg* antioxidant
HO C H
CH OH Fruit
2
Vegetables

H O
Transfer
HN NH Biotin B of
carboxyl
0.1 mg* Biotin groups
Yeast products
S COO Legumes
Nuts

Koolman, Color Atlas of Biochemistry, 2nd edition © 2005 Thieme
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