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A Bioinformatics Pipeline for Investigating Molecular Evolution and Gene Expression using RNA-seq
Published on: May 28, 2021
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Molecular evolution of acetohydroxyacid synthase in bacteria.
Yadi Liu1,2, Yanyan Li1, Xiaoyuan Wang1,2,3
1State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China.
Microbiologyopen
|August 8, 2017
Summary
Acetohydroxyacid synthase (AHAS) is crucial for bacterial branched-chain amino acid synthesis. This study proposes an evolutionary model for bacterial AHAS, suggesting gene duplication and horizontal gene transfer shaped enzyme diversity.
Area of Science:
- Biochemistry
- Molecular Biology
- Evolutionary Biology
Background:
- Acetohydroxyacid synthase (AHAS) is essential for branched-chain amino acid biosynthesis in bacteria.
- AHAS is absent in animals and plants, making it a promising target for antimicrobials and herbicides.
- Bacterial AHAS exists as single or multiple copies, necessitating evolutionary investigation.
Purpose of the Study:
- To investigate the evolutionary origins and pathways of bacterial acetohydroxyacid synthase (AHAS).
- To propose a comprehensive evolutionary model for AHAS in bacteria based on gene structure, organization, and phylogeny.
- To understand the functional significance of diverse AHAS forms in bacterial species.
Main Methods:
- Comprehensive analysis of all available bacterial AHAS protein sequences.
- Phylogenetic analysis to reconstruct evolutionary relationships.
- Examination of gene structure and organization to infer evolutionary events.
Main Results:
- A proposed evolutionary model for bacterial AHAS.
- Evidence suggests multiple AHAS copies evolved from a single ancestral copy.
- Key evolutionary mechanisms identified include gene duplication, domain deletion, and horizontal gene transfer.
Conclusions:
- The study elucidates the evolutionary history of bacterial AHAS.
- Understanding AHAS evolution aids in comprehending enzyme functions and bacterial diversity.
- Findings support the development of novel antimicrobials and industrial strains for amino acid production.
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