Introductory Microbiology

Vitamins and their functions

Sl. No.	Vitamins	Co-enzyme form	Reactions involving co-enzymes
1	Thiamine (B1)	Thiamin pyrosulphate	decarboxylation and some group transfer reactions .
2	Riboflavin (B2­)	FAD, FMN	some dehydration reactions electron transport.
3	Pyridoxine (B6)	pyridoxal phosphate	Amino acids metabolism transmination, Demination
4	Nicotinamide	NAD, NADP	Dehydrogenation ractions
5	Pantathonic acid	Co-enzyme A	Keto and oxidation for and
6	Biotin	Biotin	CO2 fixation, carboxyl transfer
7	Folic Acid	Tetrahydrofolic acid	Transfer of one carboxyl units
8	Lipoic acid	Lipoic acid	Hydrogen transport and acyl transfer
9	Cobamide (B12)	Cobamide co-enzymes	Isomerisation of methyl melonyl coenzyme-A