Abstract
The mammalian ATP2A2 gene encodes a P-type cation pump located in the sarcoplasmic or endoplasmic reticula of muscle cells. We isolated one bacterial artificial chromosome (BAC) clone containing the equine ATP2A2 gene and determined the complete coding sequence of this gene. Cloning and characterization of the equine ATP2A2 gene revealed that the equine ATP2A2 gene consists of 20 exons. In total, 32 horses out of 16 breeds were analyzed for single nucleotide polymorphisms (SNPs). A mutation scan for SNPs included ten exons and their flanking introns. We detected in total 17 SNPs, 14 of which were located in introns, one in exon 9 and two in exon 20. In this report we provide the genomic organization and the equine ATP2A2 coding sequence and an association analysis for chronic pastern dermatitis using a sample of South German draft horses.
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