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Updated: Jun 2, 2026
08:57
Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin
Published on: August 14, 2018
The impact of multiple protein sequence alignment on phylogenetic estimation
Li-San Wang1, Jim Leebens-Mack, P Kerr Wall
1Department of Pathology and Laboratory Medicine and Penn Center for Bioinformatics, 1424 Blockley Hall, 423 Guardian Drive, University of Pennsylvania, Philadelphia, PA 19104, USA. lswang@mail.med.upenn.edu
Summary
Newer protein alignment methods improve phylogenetic tree accuracy, especially for difficult sequences. The impact varies, showing alignment accuracy is key when errors are high.
Area of Science:
- Bioinformatics
- Computational Biology
- Evolutionary Biology
Background:
- Multiple sequence alignment (MSA) is foundational for phylogenetic tree estimation.
- Recent advances in MSA methods enhance protein structure analysis but are underutilized in phylogenetics.
Purpose of the Study:
- To evaluate the impact of novel MSA methods on phylogenetic reconstruction accuracy.
- To assess the relationship between alignment accuracy and phylogenetic accuracy.
Main Methods:
- A simulation study was conducted to compare phylogenetic results using traditional and new MSA methods.
- Phylogenetic accuracy was measured against varying levels of alignment accuracy.
Main Results:
- Phylogenetic accuracy positively correlates with alignment accuracy.
- The degree of phylogenetic improvement from better alignments ranges from minor to significant.
- Correlation is strongest when sequences are challenging to align; minimal impact observed with low alignment error rates.
Conclusions:
- Novel MSA methods can substantially improve phylogenetic accuracy, particularly in challenging cases.
- The utility of advanced MSA techniques in phylogenetics warrants further investigation.
- Understanding the interplay between alignment and phylogenetic error is crucial for robust evolutionary inference.
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