Adenine Phosphoribosyltransferase in Plant Tissues: Some Effects of Kinetin on Enzymic Activity 1
Adenine phosphoribosyltransferase activity was measured in extracts of soybean ( Glycine max var. Acme) callus and of senescing barley leaves ( Hordeum distichon c.v. Prior). The enzyme from soybean callus had Michaelis constants for adenine and 5-phosphoribosyl pyrophosphate of 1.5 and 7.5 μ m resp...
Gespeichert in:
| Veröffentlicht in: | Plant physiology (Bethesda) 1968-04, Vol.43 (4), p.645-648 |
|---|---|
| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Zusammenfassung: | Adenine phosphoribosyltransferase activity was measured in extracts of soybean (
Glycine max
var. Acme) callus and of senescing barley leaves (
Hordeum distichon
c.v. Prior). The enzyme from soybean callus had Michaelis constants for adenine and 5-phosphoribosyl pyrophosphate of 1.5 and 7.5 μ
m
respectively and was inhibited by AMP and stimulated by ATP. The presence of kinetin was found to considerably increase the activity of adenine phosphoribosyltransferase in extracts of soybean callus and senescing barley leaves. |
|---|---|
| ISSN: | 0032-0889 1532-2548 |