| COENZYME |
VITAMIN PRECURSOR |
ENZYMES |
REACTION |
| Pyridine nucleotides |
Nitcotinamide |
Dehydrogenases |
|
1.Nicotinamide
adenine inucleotide
(NAD) - DPN - Coenzyme I |
|
|
1.
Oxidation reduction reactions lead
ing to energy con
version |
| 2.
Nicotinamide
adenide dinucleo
tide phosphate
(NADP)-TPN-
Coenzyme II |
|
|
Oxidation reduction reactions usually
leading to
reductive syntheses |
Flavin nucleotides |
Riboflavin (B2) |
Cytochromes |
Oxidation reduc
tion. |
| 1. Flavin adenine
dinucleotide
(FAD) |
|
|
|
| 2. Flavin mononucleotide (FMN) |
|
|
|
Coenzyme
A
(CoA. SH) |
Pantothenic acid
Plus adenine diposphate |
Transferases |
Transfer
of acyl group |
Pyridoxal
phosphate
|
Pyridoxin
|
Transaminase |
Reactions involving amino acids |
| |
Pyridoxal
B6 |
Racemase |
|
| |
Pyridoxamine |
Decarboxylases Synthetases |
|
Tetrahydrofolic
acid (FH4)
nihydrofolic acid
acid (FH2)
|
Folic acid
(Pteroglutanic acid) |
|
Transfer of one-C
fragments Carries formyl etc.
Transfers phosphate. |
Thiamine pyrophos
phate (TPP)
(Cocarboxylase)
|
Thiamine (BI) |
Decarboxylases |
Decarboxylation
reactions. |
Adenosine derivative of biotin |
Biotin |
Enzymes activating
amino acids |
CO2
carrier
in
carboxylation
reactions. |
Adenosine derivative of cyaneco-
balamine |
Cyanocobalamin
(BH) |
Isomerases |
Isomerism reactions |
Adenosine derivative of lipoic acid |
Lipoic acid |
|
Carries H or
acyl
group |
