Synthesis of a new photoaffinity probe, 5-azido-[32P]UDPxylose, by UDPglucuronate carboxylyase from wheat germ.
Eur J Biochem
; 228(1): 109-12, 1995 Feb 15.
Article
in En
| MEDLINE
| ID: mdl-7882990
ABSTRACT
The enzyme, UDPglucuronic acid carboxylase (EC 4.1.1.35), was extensively purified from wheat germ, and was used to convert 5-azido-[32P]UDPglucuronic acid to 5-azido-[32P]UDPxylose, for use as a new photoaffinity probe. The carboxylyase was purified approximately 1200-fold using conventional methods, and the enzyme preparation, at the final stage of purification, was stable to storage at -20 degrees C for at least 9 months with little or no loss of activity. The partially purified carboxylyase catalyzed the conversion of 5-azido-[32P]UDPglucuronic acid to 5-azido-[32P]UDPxylose in good yield, and the UDPxylose probe was purified by ion-exchange chromatography, and characterized. The newly synthesized photoaffinity analog, 5-azido-[32P]UDPxylose, should be a valuable tool in the purification of various xylosyltransferases.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Uridine Diphosphate Glucuronic Acid
/
Uridine Diphosphate Xylose
/
Carboxy-Lyases
/
Affinity Labels
Language:
En
Journal:
Eur J Biochem
Year:
1995
Document type:
Article