Molecular coevolution of kisspeptins and their receptors from fish to mammals

Haet Nim Um, Ji Man Han, Jong Ik Hwang, Sung In Hong, Hubert Vaudry, Jae Young Seong

Research output: Contribution to journalArticlepeer-review

71 Citations (Scopus)


Kisspeptin and its receptor, GPR54, play a pivotal role in vertebrate reproduction. Recent advances in bioinformatic tools combined with comparative genomics have led to the identification of a large number of kisspeptin and GPR54 genes in a variety of vertebrate species. Genome duplications may have produced at least two isoforms of both ligand (KiSS1 and KiSS2) and receptor (GPR54-1 and GPR54-2). Additional isoforms of kisspeptin (KiSS1b) and GPR54 (GPR54-1b) have been found in an amphibian species, Xenopus (Silurana) tropicalis. Here, we describe the evolutionary lineages of these kisspeptin and GPR54 isoforms using genome synteny and phylogenetic analyses, and possible molecular interactions between kisspeptin and GPR54 subtypes based on ligand-receptor selectivity. Together, kisspeptin and GPR54 provide an excellent model for understanding molecular coevolution of the peptide ligand and GPCR pairs.

Original languageEnglish
Pages (from-to)67-74
Number of pages8
JournalAnnals of the New York Academy of Sciences
Publication statusPublished - 2010 Jul


  • G protein-coupled receptor
  • GPR54, evolution
  • genome synteny
  • kisspeptin
  • phylogentic analysis

ASJC Scopus subject areas

  • Neuroscience(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • History and Philosophy of Science


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