Chakrabarti, S. ; Biswas, B. B. (1980) Two forms of phosphoinositol kinase from germinating mung bean seeds Phytochemistry, 20 (8). pp. 1815-1817. ISSN 0031-9422
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/003194...
Related URL: http://dx.doi.org/10.1016/0031-9422(81)84010-1
Abstract
Phosphoinositol kinase, the key enzyme responsible for the biosynthesis of higher inositol phosphates has been isolated from the cotyledons of mung beans germinated for 24 hr and has been resolved into two different forms, phosphoinositol kinase A and phosphoinositol kinase B. Both forms were purified to homogeneity and characterized. The Km values for ATP with phosphoinositol kinase A (1.78 × 10-4 M) and phosphoinositol kinase B (3.12 × 10-5 M) showed that phosphoinositol kinase B had a greater affinity for ATP. ATP could be partially replaced as phosphate donor by UTP and phosphoenolpyruvate in the case of phosphoinositol kinase A but not in the case of phosphoinositol kinase B.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Phytochemical Society of Europe. |
| Keywords: | Phaseolus aureaus; Leguminosae; Mung Bean; Myo-inositol Phosphates; Phosphoinositol Kinases |
| ID Code: | 3517 |
| Deposited On: | 12 Oct 2010 04:21 |
| Last Modified: | 18 May 2011 11:32 |
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