来自水母Stomolophus sp2的分支线粒体呼吸链作为可能对环境变化的适应性反应
C A Nevarez-Lopez1, A Muhlia-Almazan2, E Gamero-Mora1
1Centro de Investigacion en Alimentacion y Desarrollo, A.C. (CIAD), Carretera Gustavo Enrique Astiazaran Rosas, No. 46, Col. La Victoria, Hermosillo, Sonora, 83304, Mexico.
Journal of bioenergetics and biomembranes
|January 17, 2024
概括
水母的线粒体具有四种独特的酶的分支呼吸链,使其能够快速进行代谢调整. 这种适应有助于水母保持能量平衡,并幸存于环境变化,包括温度波动.
科学领域:
- 线粒体生理学线粒体生理学
- 海洋生物学 海洋生物学
- 生物化学 生物化学
背景情况:
- 水母表现出与其代谢能力相关的不同环境的显著适应能力.
- 线粒体对于ATP合成至关重要,尤其是在环境压力下.
- 以前的研究表明,水母可以通过线粒体产生大量的ATP.
研究的目的:
- 描述水母Stomolophus sp2.2的线粒体呼吸链.
- 识别和分析水母线粒体呼吸链中的替代酶.
- 为了研究这些酶在不同温度下的表达模式.
主要方法:
- 隔离和描述水母线粒体的特征.
- 凝内活性测定和免疫检测.
- 质谱测量用于蛋白质识别.
- 转录组分析和遗传学研究.
主要成果:
- 该研究证实了四种正规线粒体呼吸复合体 (I-IV) 和ATP合成酶的存在.
- 发现了四种新的替代酶:一种替代氧化酶和三种脱酶 (NADH II型和甘-3-酸盐脱酶).
- 这些酶被整合到Stomolophus sp2.2中的分支线粒体呼吸链中.
- 基因表达在所有测试温度中得到确认,这表明构成性存在.
结论:
- 在类动物中发现这些替代酶突显了水母线粒体的适应性可塑性.
- 这种分支的呼吸链很可能促进快速的代谢反应,以维持能量恒温.
- 这些发现提供了对水母对环境变化的弹性,如气候变化引起的温度变化,的见解.
相关概念视频
01:41The Supercomplexes in the Crista Membrane
2.5K
The mitochondrial cristae membrane is the primary site for the oxidative phosphorylation (OXPHOS) process of energy conversion mediated through respiratory complexes I to V. These complexes have been widely studied for decades, and it has been proven that they form supramolecular structures called respiratory supercomplexes (SC). These higher-order complexes may be crucial in maintaining the biochemical structure and improving the physiological activity of the individual complexes while...
2.5K
01:32Chemiosmosis
98.5K
Oxidative phosphorylation is a highly efficient process that generates large amounts of adenosine triphosphate (ATP), the basic unit of energy that drives many cellular processes. Oxidative phosphorylation involves two processes— the electron transport chain and chemiosmosis.
Electron Transport Chain
The electron transport chain involves a series of protein complexes on the inner mitochondrial membrane that undergo a series of redox reactions. At the end of this chain, the electrons...
Electron Transport Chain
The electron transport chain involves a series of protein complexes on the inner mitochondrial membrane that undergo a series of redox reactions. At the end of this chain, the electrons...
98.5K
01:31Chemical Factors Affecting Respiration Centers
1.1K
Chemical factors such as changing CO2, O2, and H+ levels in arterial blood play a critical role in influencing respiration depth and rates. These variations are detected by chemoreceptors—specialized sensors located in two primary body areas. Central chemoreceptors are found throughout the brain stem, including the ventrolateral medulla, while peripheral chemoreceptors are located in the aortic arch and carotid arteries.
CO2 has a potent influence on respiration and is strictly regulated....
CO2 has a potent influence on respiration and is strictly regulated....
1.1K