Biosynthesis of tetrahydrobiopterin: a sensitive assay of 6-pyruvoyltetrahydropterin synthase using [2'-3H]dihydroneopterin 3'-triphosphate as substrate.
Pyruvoyltetrahydropterin synthase catalyzes the release of tritiated water from [2'-3H]dihydroneopterin 3'-triphosphate. The tritiated water formed during the enzymatic reaction is separated from substrate by adsorption of the latter to activated charcoal. The sensitivity and specificity of the assay allows the determination of the enzyme in crude cell extract.
Kerler
F
F
Gesellschaft für Strahlen- und Umweltforschung, Institut für Experimentelle Hämatologie, München, F.R.G.
Schwarzkopf
B
B
Katzenmaier
G
G
Le Van
Q
Q
Schmid
C
C
Ziegler
I
I
Bacher
A
A
D000327:Adsorption; D000429:Alcohol Oxidoreductases / Q000378:metabolism*; D000818:Animals; D001708:Biopterins / Q000031:analogs & derivatives* / Q000096:biosynthesis; D002606:Charcoal; D055598:Chemical Phenomena; D002621:Chemistry; D004492:Edetic Acid / Q000494:pharmacology; D004926:Escherichia coli / Q000201:enzymology*; D008099:Liver / Q000201:enzymology; D008274:Magnesium / Q000494:pharmacology; D051379:Mice; D019798:Neopterin / Q000031:analogs & derivatives; D019761:Phosphorus-Oxygen Lyases; D011621:Pteridines / Q000378:metabolism*; D014316:Tritium
D011621:Pteridines; D014316:Tritium; D002606:Charcoal; C013490:dihydroneopterin triphosphate; D001708:Biopterins; D019798:Neopterin; D004492:Edetic Acid; D000429:Alcohol Oxidoreductases; D019761:Phosphorus-Oxygen Lyases; C043497:6-pyruvoyltetrahydropterin synthase; C003402:sapropterin; D008274:Magnesium