TABLE VIII
Alkyl acceptor
Guanidinoacetate
Epinephrine and
other catecholamines
Norepinephrine
Unknown
Dimethylethanolamine
2-Hydroxyadenine
Putrescine
Nicotinamide
$-Adenosyl
methionine
Product
Creatine
3-methoxycatecholamines
Epinephrine
Ergosterol
Choline
2-Hydroxy-6-methylaminoadenine
Spermine
iV'-Methyl nicotinamide
2-Amino-4-butyrolactone
Distribution
Mammalian livers only
Several tissues but not
skeletal muscle
Bovine adrenal medulla
extract
Yeast extracts
Rat liver homogenate
E. coli
E. coli
Rat, pig, and dog liver
Bacteria, yeast
Enzyme
Purification
Source
Fold
Pig liver
Rat liver
—
—
—
E. coli
Rat liver
Yeast
80
30
—
—
—
50
30
20
Requirements
or cofactors
SH
Mg2+
—
—
—
None
None
—
Specific activity
(jumoles
product/mg.
protein/hour)
1.5
0.8
—
—
—
0.5
0.04
0.3
References
150, 183
186
185
187
17
189
191
174, 184
192, 193
p
r·
2
o
a