Abstract
Matrix metalloproteinases (MMPs) are a family of enzymes that cleave protein components of the extracellular matrix, such as collagens, laminin, fibronectin, and proteoglycans, playing a role in degradation of the matrix of the uterus and in embryo implantation. We report the identification of two members of the MMP gene family in swine. The porcine MMP1 and MMP10 genes comprise 10 exons and 9 introns spanning approximately 8,460 and 7,030 bp. Of 28 potential single nucleotide polymorphisms found in the genomic region, five polymorphic positions were analyzed using PCR-RFLP. Allelic frequencies and haplotypes were analyzed in five pig breeds (n = 280). The AC haplotype of MMP1 and ATG haplotype of MMP10 were not detected in two foreign pig breeds. Association analysis in a French Large White population (n = 164, total four traits) showed no association between haplotypes and reproduction performance. In addition, porcine MMP1 and MMP10 were mapped on SSC9p(13) and SSC2q(21), respectively, in agreement with comparative mapping data.
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