Gupta, Sarmila Das ; Adhikari, Jukta ; Lahiri Majumder, Arun (1984) L-Myo-inositol-1-phosphate synthase from lower plant groups: partial purification and properties of the enzyme from Euglena gracilis Physiologia Plantarum, 61 (3). pp. 412-416. ISSN 0031-9317
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Official URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1399-...
Related URL: http://dx.doi.org/10.1111/j.1399-3054.1984.tb06348.x
Abstract
A survey for the enzyme L-myo-inositol-1-phosphate synthase (EC 5.5.1.4) has been conducted among various members of the lower plant groups, mainly algac, bryophytes and fungi; some properties of the partially purified enzyme from Euglena gracilis Z. are presented. The enzyme was detected in Chloropycean algae, Marchantiales and the Basidiomycetous fungi. The enzyme from Euglena had a pH optimum at 7.5. The Km for glucose-6-P was 2.1 mM and for NAD+ 80 μM. When assayed in the absence of added NAD+, the enzyme showed a basal activity suggesting the presence of bund NAD+ in the system. NH4Cl increased the enzyme activity two-fold, altough the enzyme was inactivated by (NH4)2SO4.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Scandinavian Society for Plant Physiology. |
| Keywords: | Inositol Synthase; Myo-inositol |
| ID Code: | 19215 |
| Deposited On: | 23 Nov 2010 13:18 |
| Last Modified: | 06 Jun 2011 04:10 |
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