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Measurement of Heme Synthesis Levels in Mammalian Cells
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Function and evolution of vertebrate globins.

T Burmester1, T Hankeln

  • 1Institute of Zoology and Zoological Museum, University of Hamburg, Hamburg, Germany.

Acta Physiologica (Oxford, England)
|May 10, 2014
PubMed
Summary

Globins are vital haem-proteins for animal respiration and energy. This review explores the diverse functions and evolutionary paths of vertebrate globins, including newly identified types beyond hemoglobin and myoglobin.

Keywords:
androglobincytoglobinhaemoglobinmyoglobinneuroglobinoxygen

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Area of Science:

  • Biochemistry
  • Evolutionary Biology
  • Molecular Biology

Background:

  • Globins are haem-proteins crucial for oxygen transport and energy metabolism in animals.
  • Beyond oxygen binding, globins participate in nitric oxide metabolism, reactive oxygen species detoxification, and intracellular signaling.
  • Recent genomic studies have expanded the known vertebrate globin repertoire beyond hemoglobin and myoglobin.

Purpose of the Study:

  • To review the current understanding of vertebrate globin functions.
  • To examine the taxonomic distribution and evolutionary history of various globin types.
  • To elucidate the functional adaptations driving globin diversity in vertebrates.

Main Methods:

  • Literature review of existing research on vertebrate globins.
  • Analysis of genomic data for globin identification and distribution.
  • Comparative analysis of globin sequences and structures.

Main Results:

  • Identification of six additional globin types in vertebrates: androglobin, cytoglobin, globin E, globin X, globin Y, and neuroglobin.
  • Detailed overview of the diverse physiological roles attributed to these globin families.
  • Tracing the evolutionary relationships and diversification patterns of vertebrate globins.

Conclusions:

  • Vertebrate globins exhibit a broader range of functions than previously recognized.
  • Evolutionary pressures have shaped a diverse array of globin proteins with specialized roles.
  • Understanding globin evolution provides insights into protein adaptation and functional innovation.