Evidence map›Paper›PMID 22456880›Full record

ArticleProceedings. Biological sciences2012

Insertions and deletions trigger adaptive walks in Drosophila proteins.

Evgeny V Leushkin, Georgii A Bazykin, Alexey S Kondrashov

Abstract read
In one paragraph

Article in Proceedings. Biological sciences, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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2 · The registry

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3 · Its place in the literature

Who cites it

12 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Mechanisms of protein evolution.Protein science : a publication of the Protein Society · 2022
    Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
4 · The record

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5 · Who and what money

Authors and funding

3 authors.

Evgeny V LeushkinDepartment of Bioengineering and Bioinformatics, Lomonosov Moscow State University, Leninskye Gory 1-73, Moscow 119991, Russia. leushkin@gmail.com
Georgii A Bazykin
Alexey S Kondrashov

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Maps that relate all possible genotypes or phenotypes to fitness--fitness landscapes--are central to the evolution of life, but remain poorly known. An insertion or a deletion (indel) of one or several amino acids constitutes a substantial leap of a protein within the space of amino acid sequences, and it is unlikely that after such a leap the new sequence corresponds precisely to a fitness peak. Thus, one can expect an indel in the protein-coding sequence that gets fixed in a population to be followed by some number of adaptive amino acid substitutions, which move the new sequence towards a nearby fitness peak. Here, we study substitutions that occur after a frame-preserving indel in evolving proteins of Drosophila. An insertion triggers 1.03 ± 0.75 amino acid substitutions within the protein region centred at the site of insertion, and a deletion triggers 4.77 ± 1.03 substitutions within such a region. The difference between these values is probably owing to a higher fraction of effectively neutral insertions. Almost all of the triggered amino acid substitutions can be attributed to positive selection, and most of them occur relatively soon after the triggering indel and take place upstream of its site. A high fraction of substitutions that follow an indel occur at previously conserved sites, suggesting that an indel substantially changes selection that shapes the protein region around it. Thus, an indel is often followed by an adaptive walk of length that is in agreement with the theory of molecular adaptation.

Indexed as

Amino Acid SubstitutionEvolution, MolecularMutagenesis, InsertionalSequence DeletionAmino Acid SequenceAnimalsDrosophilaDrosophila melanogasterDrosophila ProteinsDrosophila Proteins

Identifiers

PMID22456880
PMCPMC3385466

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