Results
Title

Correlated Evolution of Gonadotropin-Releasing Hormone and Gonadotropin-Inhibitory Hormone and Their Receptors in Mammals.

Authors

Tiwary, Basant K.

Abstract

Background: Evolutionary rate variation in genes (proteins) is manifested both within the species (genome) and between the species (genomes). However, the interdependent components of a biological system in form of a gene or a protein are expected to evolve in a correlated manner under a common functional constraint. Methods: The phylogenetic analysis and correlation analysis of gonadotropin-releasing hormone (GnRH) and gonadotropin-inhibitory hormone (GnIH) and their receptors (GnRHR and GnIHR) was conducted along with other control neuropeptides. Results: Both neuropeptides and their receptors regulating the reproductive neuroendocrine axis in vertebrates exhibited a correlated evolution under a common physiological constraint to regulate the release of gonadotropin. This result supports a coordinated substitution of amino acids in the GnRH and the GnIH neuropeptides along with their receptors in terms of similar evolutionary rates and distances with similar nucleotide composition of genes. Conclusion: This is the first demonstration of the correlated evolution of two components of an endocrine system regulating the release of gonadotropin which are acting in concert for successful reproduction. Copyright © 2012 S. Karger AG, Basel

Subjects

GONADOTROPIN; GENES; HORMONES; PROTEINS; MAMMALS

Publication

Neuroendocrinology, 2013, Vol 97, Issue 3, p242

ISSN

0028-3835

Publication type

Academic Journal

DOI

10.1159/000342694