Table 2.

Most Frequently Used Metabolites in the Reference Metabolism

Reference set		Mummaneni and Kazic (2002)
Compound	Occurrences	Compound	Occurrences
H2O	961	H(2)O	932
NAD+	344	ATP	318
NADH	336	O2	298
ATP	311	NAD(+)	254
O2	271	NADH	245
NADP+	249	NADP(+), NADPH	233
NADPH	246	ADP	227
Pi	231	Phosphate	215
ADP	231	CoA	200
CO2	219	CO(2)	197
NH3	171	Diphosphate	171
CoA	165	NH(3)	164
PPi	154	UDP	135
l-Glu	96	s-Adenosyl-l-methionine	128
AMP	91	s-Adenosyl-l-homocysteine	120
Pyruvate	90	AMP	98
KetoGlu	88	H(2)O(2)	89
H2O2	83	Pyruvate	85
SAM	73	2-Oxoglutarate	79
SAH	69	l-Glutamate	78

Compound names on the right conform to Mummaneni and Kazic (2002). Originals are written in ASCII text characters and parentheses indicate subfixes.