Localization of the calcium release channel gene in cattle and horse by in situ hybridization: evidence of a conserved synteny with glucose phosphate isomerase.

The research article discusses how the calcium release channel gene in cattle and horse has been traced to specific regions on their chromosomes. The gene’s location aligns with that of the glucose phosphate isomerase gene in both species, providing further evidence of a conserved synteny – meaning the genes are located at the same position on the chromosomes – in mammalian evolution.

Methods and Findings

• The researchers adopted in situ hybridization techniques to trace the calcium release channel (CRC) gene on the chromosomes of cattle and horses. They utilized a porcine CRC cDNA probe for their experiment.
• The investigation found that the hybridization signal, which denotes the location of the CRC gene, was focused on the 18q23-q26 bands in cattle and the 10pter region in horses.

Comparison with Previous Studies

• This study’s findings were compared with previous research noting that the glucose phosphate isomerase (GPI) gene is present at the same site in both species.
• The GPI and CRC genes’ identical locations suggest they are syntenic, that is, they are found on the same sections of the chromosome in both species.

Implications for Evolution

• This study’s findings contribute to prior knowledge indicating that the GPI and CRC genes are syntenic not only in cattle and horses but also in humans, pigs, and mice.
• These instances of conserved synteny are significant as they provide evidence of common patterns in the organization and evolution of mammalian chromosomes.