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Updated: Jun 3, 2025

Chromatin Immunoprecipitation ChIP using Drosophila tissue

Chromatin Immunoprecipitation ChIP using Drosophila tissue

Published on: March 23, 2012

对Drosophila的Bam和Bgcn序列和预测的蛋白质结构演变进行比较分析

Luke R Arnce¹, Jaclyn E Bubnell¹, Charles F Aquadro¹

¹Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY, USA.

bioRxiv : the preprint server for biology

|January 7, 2025

概括

大理石袋 (Bam) 蛋白质结构在Drosophila物种中得到保存,这表明功能差异源于整合,而不是结构. 积极选择可能与与Wolbachia细菌的相互作用有关.

科学领域:

发展生物学发展生物学
进化遗传学进化遗传学
结构生物学结构生物学

背景情况:

大理石袋 (Bam) 蛋白质对于Drosophila的生殖系干细胞分化至关重要.
巴姆通过与良性状细胞新生体 (Bgcn) 蛋白质复合而起作用.
巴姆的功能作用在物种之间可能会有所不同,这可以从它对一些多索菲拉物种的游戏生成的必要性中看出,而不是其他物种.

研究的目的:

将Bam蛋白和Bam:Bgcn复合物的预测结构与四种Drosophila物种进行比较,这些物种具有不同的Bam功能要求.
调查结构差异是否解释了Bam在游戏生成中的功能分歧.
通过比较基因组学和结构分析,探索作用于Bam的进化压力.

主要方法:

使用AlphaFold2和AlphaFold Multimer来预测Bam和Bam:Bgcn复合物的蛋白质结构.
在Drosophila melanogaster,D. simulans,D. yakuba和D. teissieri.之间比较预测的结构.
在物种之间分析了bam基因中积极选择和氨基酸多样化的模式.

主要成果:

巴姆和Bam:Bgcn复合体的高置信度结构区域在四种物种中显示出最小的差异,尽管有显著的序列分歧.
游戏生成中的功能差异不太可能是由于Bam的结构变异引起的.
积极选择和氨基酸多样化的证据支持Selection,Pleiotropy和Compensation (SPC) 模型.

结论:

巴姆蛋白质结构高度保存,这表明功能分歧源于细胞通路的差异化整合,而不是结构变化.
在D. teissieri体育生成中Bam的功能缺失可能是由于缺乏基本的整合.
巴姆的适应性变化,可能是由与沃尔巴基亚的相互作用驱动的,可能涉及维持结构完整性的补偿机制.

关键词:

阿尔法折叠是什么意思阿尔法折叠巴姆巴姆巴姆巴姆是什么意思这就是为什么Bgcncn 骨科专家的说法蛋白质结构蛋白质结构生殖生殖的繁殖.

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