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A phylogenetics-based nomenclature system for steroid receptors in teleost fishes

View ORCID ProfileAndrew P. Hoadley, View ORCID ProfileKathleen M. Munley, View ORCID ProfileBeau A. Alward
doi: https://doi.org/10.1101/2022.12.16.520807
Andrew P. Hoadley
1Department of Psychology, University of Houston, Houston, TX, USA
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Kathleen M. Munley
1Department of Psychology, University of Houston, Houston, TX, USA
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Beau A. Alward
1Department of Psychology, University of Houston, Houston, TX, USA
2Department of Biology and Biochemistry, University of Houston, Houston, TX, USA
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  • For correspondence: balward@uh.edu
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ABSTRACT

Teleost fishes have emerged as tractable models for studying the neuroendocrine regulation of social behavior via molecular genetic techniques, such as CRISPR/Cas9 gene editing. Moreover, teleosts provide an opportunity to investigate the evolution of steroid receptors and their functions, as species within this lineage possess novel steroid receptor paralogs that resulted from a teleost-specific whole genome duplication. Although teleost fishes have grown in popularity as models for behavioral neuroendocrinology, there is not a consistent nomenclature system for steroid receptors and their genes, which may impede a clear understanding of steroid receptor paralogs and their functions. Here, we used a phylogenetic approach to assess the relatedness of protein sequences encoding steroid receptor paralogs in 18 species from 12 different orders of the Infraclass Teleostei. While most similarly named sequences grouped based on the established phylogeny of the teleost fish lineage, our analysis revealed several inconsistencies in the nomenclature of steroid receptor paralogs, particularly for sequences encoding estrogen receptor beta (ERβ) and estrogen-related receptor gamma (ERγ). Based on our results, we propose a nomenclature system for teleosts in which Greek symbols refer to proteins and numbers refer to genes encoding different subtypes of steroid receptors within the five major groups of this nuclear receptor subfamily. Collectively, our results bridge a critical gap by providing a cohesive naming system for steroid receptors in teleost fishes, which will serve to improve communication, promote collaboration, and enhance our understanding of the evolution and function of steroid receptors across vertebrates.

HIGHLIGHTS

  • Teleosts have emerged as models for studying neuroendocrine regulation of behavior.

  • Teleost fishes possess additional steroid receptor paralogs due to the TS-WGD.

  • Teleosts lack consistent nomenclature system for steroid receptors and their genes.

  • Phylogenetic analyses of protein sequences revealed discrepancies for ERβ and ERγ.

  • We propose a novel, cohesive naming system for steroid receptors in teleost fishes.

Competing Interest Statement

The authors have declared no competing interest.

Footnotes

  • ↵† These authors share first authorship

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted December 19, 2022.
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A phylogenetics-based nomenclature system for steroid receptors in teleost fishes
Andrew P. Hoadley, Kathleen M. Munley, Beau A. Alward
bioRxiv 2022.12.16.520807; doi: https://doi.org/10.1101/2022.12.16.520807
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A phylogenetics-based nomenclature system for steroid receptors in teleost fishes
Andrew P. Hoadley, Kathleen M. Munley, Beau A. Alward
bioRxiv 2022.12.16.520807; doi: https://doi.org/10.1101/2022.12.16.520807

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