Table 15.2: Some activated carriers in metabolism

Carrier molecule in activated form

Group carried

Vitamin precursor

ATP

Phosphoryl

 

NADH and NADPH

Electrons

Nicotinate (niacin) (vitamin B3)

FADH2

Electrons

Riboflavin (vitamin B2)

FMNH2

Electrons

Riboflavin (vitamin B2)

Coenzyme A

Acyl

Pantothenate (vitamin B5)

Lipoamide

Acyl

 

Thiamine pyrophosphate

Aldehyde

Thiamine (vitamin B1)

Biotin

CO2

Biotin (vitamin B7)

Tetrahydrofolate

One-carbon units

Folate (vitamin B9)

S-Adenosylmethionine

Methyl

 

Uridine diphosphate glucose

Glucose

 

Cytidine diphosphate diacylglycerol

Phosphatidate

 

Nucleoside triphosphates

Nucleotides

 

Note: Many of the activated carriers are coenzymes that are derived from water-soluble vitamins.