Cited by 835Genomics and Phylogenetic StudiesFractal and DNA sequence analysisRNA and protein synthesis mechanisms

GUIDANCE2: accurate detection of unreliable alignment regions accounting for the uncertainty of multiple parameters

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Sela, Itamar, Ashkenazy, Haim, Katoh, Kazutaka, Pupko, Tal·2015·Nucleic Acids Research

Abstract

Inference of multiple sequence alignments (MSAs) is a critical part of phylogenetic and comparative genomics studies. However, from the same set of sequences different MSAs are often inferred, depending on the methodologies used and the assumed parameters. Much effort has recently been devoted to improving the ability to identify unreliable alignment regions. Detecting such unreliable regions was previously shown to be important for downstream analyses relying on MSAs, such as the detection of positive selection. Here we developed GUIDANCE2, a new integrative methodology that accounts for: (i) uncertainty in the process of indel formation, (ii) uncertainty in the assumed guide tree and (iii) co-optimal solutions in the pairwise alignments, used as building blocks in progressive alignment algorithms. We compared GUIDANCE2 with seven methodologies to detect unreliable MSA regions using extensive simulations and empirical benchmarks. We show that GUIDANCE2 outperforms all previously developed methodologies. Furthermore, GUIDANCE2 also provides a set of alternative MSAs which can be useful for downstream analyses. The novel algorithm is implemented as a web-server, available at: http://guidance.tau.ac.il.

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  1. [28]DeBlasio D.F. Wheeler T.J. Kececioglu J.D. Research in Computational Molecular Biology 2012 Berlin, Heidelberg Springer 45 59

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Authors
Sela, I., Ashkenazy, H., Katoh, K., & Pupko, T.
Affiliations
  • Tel Aviv University (IL)
  • Immunology Frontier Research Center, The University of Osaka (JP)
Corresponding author
Pupko, Tal
Venue
Nucleic Acids Research
Published
2015-04-16
Volume
43
Issue
W1
Pages
W7-W14
ISSN
  • 0305-1048 (ISSN-L)
  • 1362-4962
OpenAlex
W2074830661
Cited by
835
References
61
Citations by year
2026: 37 · 2025: 60 · 2024: 74 · 2023: 71 · 2022: 92 · 2021: 119 · 2020: 126 · 2019: 82 · 2018: 78 · 2017: 57 · 2016: 34 · 2015: 4
FWCI
25.05
Type
journal article
Language
en
Open access
Locations
  • Nucleic Acids Research (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • University of Pennsylvania
  • Israel Science Foundation (1092/13)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fractal and DNA sequence analysis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
Keywords
multiple sequence alignment, progressive alignment, positive selection detection, phylogenetics, comparative genomics
MeSH terms
Algorithms, Software, Sequence Alignment, Internet, Uncertainty

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