Light-induced effects of several enzymes of carbohydrate metabolism in Phycomyces blakesleeanus |
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| Institution: | 1. Division of Medical Oncology, Department of Internal Medicine, Korea University College of Medicine, Korea University, Seoul 152-703, Republic of Korea;2. Brain Korea 21 Program for Biomedicine Science, Korea University College of Medicine, Korea University, Seoul 152-703, Republic of Korea;1. Department of Pharmacology, Toxicology and Medicine and Massey Cancer Center, Virginia Commonwealth University, United States;2. Department of Pharmacology and Toxicology, Virginia Commonwealth University, United States;3. Department of Human and Molecular Genetics, Virginia Commonwealth University, United States;1. Department of Genetics, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh 33516, Egypt;2. Department of Plant Science and Biotechnology, University of Pannonia, H-8360 Keszthely, Hungary;1. Dipartimento di Scienze Della Natura e Del Territorio, Università di Sassari, Via Piandanna 4, 07199 Sassari, Italy;2. Dipartimento di Biologia, Università di Pisa, Via Derna 1, 56126 Pisa, Italy |
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| Abstract: | - 1.1. The photoregulation shown by glyceraldehyde 3-phosphate dehydrogenase and glucose 6-phosphate dehydrogenase appears to be independent of the mad gene product(s) and also independent of carotene biosynthesis regulation.
- 2.2. The photoregulation of malate dehydrogenase appeared to be dependent on the mutation of the mad and car S genes.
- 3.3. Pyruvate kinase and lactate dehydrogenase may be classified as light-independent.
- 4.4. The action of ATP and fructose 1,6-bisphosphate on the enzymes studied was generally independent of light/dark grown conditions.
- 5.5. However, the effect of fructose 1,6-bisphosphate on Phycomyces pyruvate kinase appears to be light-dependent.
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