| 固氮鱼腥藻HB686固氮_放氢与谷氨酰胺合成酶的关系 |
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| 引用本文： | 程双奇,廖水发,莫熙穆.固氮鱼腥藻HB686固氮_放氢与谷氨酰胺合成酶的关系[J].华南师范大学学报(自然科学版),1989,0(2):1. |
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| 作者姓名： | 程双奇 廖水发 莫熙穆 |
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| 作者单位： | 华南师范大学生物学系
(程双奇，廖水发)，华南师范大学生物学系(莫熙穆) |
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| 基金项目： | 国家自然科学基金资助课题 |
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| 摘 要： | 固氮鱼腥藻HB686(Anabaena azotica HB686)的固氮和放氢被氨抑制与蛋氨酸砜亚胺(MSX)解除氨抑制的作用呈平行关系.谷氨酰胺能抑制固氮和放氢,而对谷氨酰胺合成酶(GS)和吸氢酶却有激活作用.固氮血腥藻在Mg~(2+)介质中的乙炔还原活性和放氢量皆比在Mn~(2+)介质中的高,而GS的活性则相反.不同波长的光照射对固氮、放氢和GS活性有不同的影响.
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| 关 键 词： | 固氮鱼腥藻 谷氨酰胺合成酶 固氮 放氢 吸氢 |
RELATIONSHIP AMONG NITROGEN FIXATION, HYDROGEN EVOLUTION AND GLUTAMINE SYNTHETASE IN ANABAENA AZOTICA HB686 |
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| Cheng Shuangqi Liao Shuifa Mo Ximu.RELATIONSHIP AMONG NITROGEN FIXATION, HYDROGEN EVOLUTION AND GLUTAMINE SYNTHETASE IN ANABAENA AZOTICA HB686[J].Journal of South China Normal University(Natural Science Edition),1989,0(2):1. |
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| Authors: | Cheng Shuangqi Liao Shuifa Mo Ximu |
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| Institution: | Biol. Dept. |
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| Abstract: | There is parallel relationship between ammonia repression and methioninne sulfoximine ( MSX ) derepression of Nz-fixation H2-evolution in Anabaena azotica HB686G.lutaminc can inhibit N2-fixation and H2-evolution but activate the activity of glutamine synthetase and uptake-hydrogenase. Both activity of H2C2-reduction and amount of H2 -evolution of Anabaena in the Mg2+ medium is more than those in the Mn2 + , but activity of glutamine synthetase is opposite. Illuminating with different wavclenths of light has different effects on N2-fixatioin, H2-evolution and glutamine synthetase activity. |
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| Keywords: | anabaena azotica glutamine synthetase nitrogeii-fixation hydrogen-evolution hydrogen-uptake |
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