Please use this identifier to cite or link to this item:
http://hdl.handle.net/10553/50897
Title: | A comparative study of the glutamate dehydrogenase activity in several species of marine phytoplankton | Authors: | Ahmed, S. I. Kenner, R. A. Packard, T. T. |
UNESCO Clasification: | 241705 Biología marina 2302 Bioquímica |
Issue Date: | 1976 | Publisher: | 0025-3162 | Journal: | Marine Biology | Abstract: | Kinetic studies on the NADP-linked glutamate dehydrogenase (GDH) activity in 8 species of marine phytoplankton have been carried out. The pH optima, linearity of reactions, apparent energies of activation, and apparent K m values for NADPH, NH 4 >+ and α-ketoglutarate were determined. Based on these data, an accurate, sensitive enzyme assay procedure is presented which was successfully tested on shipboard during a recent cruise in an upwelling region. Preliminary studies on inhibition and activation of the NADP-linked GDH activity have also been carried out. In addition to NADP-linked GDH activity, NAD-linked GDH activity was discovered in certain species of phytoplankton. The possible physiological roles of NAD-and NADP-linked GDH enzymes are discussed. | URI: | http://hdl.handle.net/10553/50897 | ISSN: | 0025-3162 | DOI: | 10.1007/BF00395598 | Source: | Marine Biology [ISSN 0025-3162], v. 39, p. 93-101 |
Appears in Collections: | Artículos |
Items in accedaCRIS are protected by copyright, with all rights reserved, unless otherwise indicated.