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ADH evolution and the phylogenetic footprint

R L Dorit1, F J Ayala

  • 1Department of Biology, Yale University, New Haven, CT 06511, USA.

Journal of Molecular Evolution
|June 1, 1995
PubMed
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Protein evolution is shaped by selection and population factors. Analyzing alcohol dehydrogenase (ADH) in Drosophilidae revealed varied amino acid changes, highlighting subgroup-specific evolutionary histories.

Area of Science:

  • Evolutionary biology
  • Molecular evolution
  • Population genetics

Background:

  • Protein evolution is influenced by both structural/functional constraints and population-level forces.
  • Alcohol dehydrogenase (ADH) is a well-conserved protein crucial for understanding evolutionary dynamics.

Purpose of the Study:

  • To investigate the interplay of selective pressures and populational factors in protein evolution.
  • To analyze amino acid replacement patterns in Drosophilidae alcohol dehydrogenase (ADH).

Main Methods:

  • Utilized a sliding window approach to quantify amino acid changes along the ADH protein sequence.
  • Compared ADH sequences across different Drosophilidae subgroups (melanogaster, mulleri, Hawaiian).

Main Results:

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  • Observed heterogeneous patterns of amino acid replacement across the ADH molecule.
  • Discovered significant differences in ADH replacement profiles among the melanogaster, mulleri, and Hawaiian subgroups.

Conclusions:

  • The evolutionary history of specific Drosophilidae subgroups leaves a distinct imprint on the evolution of conserved proteins like ADH.
  • Protein evolution reflects a complex interaction between molecular constraints and population dynamics.