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Molecular Evolution of the Tre Recombinase
12:02

Molecular Evolution of the Tre Recombinase

Published on: May 29, 2008

Molecular evolution of the transferrin receptor/glutamate carboxypeptidase II family

Lisa Ann Lambert1, Stacey L Mitchell

  • 1Department of Biology, Chatham College, Woodland Road, Pittsburgh, PA 15232, USA. lambert@chatham.edu

Journal of Molecular Evolution
|December 13, 2006
PubMed

Insights

This study identifies conserved residues in the transferrin receptor (TfR) family across species. Evolutionary analysis reveals gene duplications, suggesting a mechanism for the expansion of these essential iron uptake proteins.

Area of Science:

  • * Molecular Biology and Evolutionary Genetics
  • * Cellular Biology and Biochemistry

Background:

  • * The transferrin receptor (TfR) family comprises at least seven homologous proteins in primates, crucial for iron uptake.
  • * Transferrin receptor 1 (TfR1) is a type II membrane glycoprotein involved in iron transport.
  • * Other family members include TfR2, glutamate carboxypeptidase II (GCP2), and related proteins.

Purpose of the Study:

  • * To compare sequences within the TfR/GCP2 family across diverse species.
  • * To identify conserved residues and understand the evolutionary history of this gene family.

Main Methods:

  • * Comparative sequence analysis of 86 homologous sequences from 24 species (mammals to fungi).
  • * Phylogenetic analysis to reconstruct the evolutionary history of the TfR/GCP2 family.

Main Results:

  • * Identification of several highly conserved residues specific to each family member, not previously linked to clinical mutations.
  • * Evolutionary history indicates repeated gene duplication events within the TfR/GCP2 family.
  • * Findings support theories on gene family expansion from slowly evolving, non-essential genes.

Conclusions:

  • * The TfR/GCP2 family has undergone significant evolutionary diversification through gene duplication.
  • * Conserved residues identified may offer new insights into protein function and potential clinical relevance.
  • * Evolutionary patterns provide a framework for understanding the development of multigene families.

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