以ATP辅助的原细胞膜形成与以乙醇胺为基础的双胞胎
Mahesh Prasad1, Bibhas Hazra1, Raki Mandal1
1Indian Institute of Science Education and Research Kolkata, Mohanpur, Nadia 741246, West Bengal, India.
Langmuir : the ACS journal of surfaces and colloids
|July 8, 2023
概括
研究人员合成了以乙醇胺为基础的两类,OLEA和OLMEA,形成由ATP模拟的稳定原细胞膜. 这提供了早期地球化学和现代细胞结构之间的潜在桥梁.
科学领域:
- 生命的起源研究 生命的起源研究
- 生物化学 生物化学
- 超分子化学 超分子化学
背景情况:
- 益生菌膜对于细分生命的组成部分至关重要.
- 现代细胞膜使用乙醇胺脂,这表明与早期膜形成的联系.
研究的目的:
- 为了研究以乙醇胺为基础的两类生物的前生物合成.
- 探索它们在模拟的早期地球条件下形成原细胞膜的能力.
- 了解ATP和ADP等模板分子在囊泡形成中的作用.
主要方法:
- 湿干循环用于两合成.
- 度测量,NMR,DLS,光和显微镜用于表征.
- 葡萄糖封装研究,以评估膜完整性.
主要成果:
- 在湿干循环中合成了OLEA和OLMEA.
- OLEA-ATP和OLMEA-ATP (3:1比率) 形成了稳定的原细胞膜,而ATP充当了模板.
- OLDMEA没有形成膜;ADP模拟了较小的OLEA囊泡,表明酸盐骨干在曲率中的作用.
结论:
- 基于N-甲基乙醇胺的两类生物可以形成益生菌囊泡.
- 乙醇胺部分的结能力为在波动的环境中稳定原细胞形成提供了进化优势.
- 这项工作提供了关于从前生物化学过渡到早期细胞生命的见解.
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