Genome-Wide Identification, Characterization of the <i>ORA</i> (Olfactory Receptor Class A) Gene Family, and Potential Roles in Bile Acid and Pheromone Recognition in Mandarin Fish (<i>Siniperca chuatsi</i>).

ABSTRACT: The ORA (olfactory receptor class A) gene family in teleosts is related to the V1R (vomeronasal 1 receptors) family in mammals and plays a key role in odor detection. Although ORA genes have been identified in several teleosts, their characteristics in mandarin fish (Siniperca chuatsi) have not been explored. In this study, we conducted a comprehensive genomic analysis of the mandarin fish and discovered a complete ORA gene family consisting of five members located on chromosome 2 (ORA1, ORA2, ORA3, ORA4) and chromosome 16 (ORA6). Phylogenetic, synteny, and gene structure analyses revealed typical exon-intron conservation with strong evidence of purifying selection. Tissue expression analysis showed distinct expression p

SUBMITTER: Dong X 

PROVIDER: S-EPMC11817882 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature