cDNA cloning, bioinformatic and tissue-specific expression analysis of porcine JARID1C gene.

Jumonji, AT-rich interactive domain 1C (JARID1C) protein belongs to the highly conserved ARID protein family, which is involved in chromatin remodeling and transcriptional regulation during cell growth, differentiation, and development. In humans, this gene plays a vital role in normal brain development and function. Using an in silico approach in combination with 5' rapid amplification of cDNA ends (5' RACE), the full-length cDNA of JARID1C (GenBank accession No. EF139241) from porcine ovary, which contains 5,908 bp nucleotides, with an open reading frame (ORF) of 4,548 bp, has been cloned. The putative porcine JARID1C protein, which is located in the nucleus, encodes 1,516 amino acids with a molecular weight of 170 kDa and a pI of 5.44. Bioinformatic prediction indicates that the protein contains several conserved domains: a JmjN domain, an ARID domain, a JmjC domain, a C5HC2 zinc finger domain, and a PHD zinc finger domain. Similarity comparisons for nucleic and amino acid sequences reveal that the porcine JARID1C protein shares a high identity with its dog, mouse, rat, and human counterparts. The phylogenetic tree of the JARID1 subfamily proteins has been constructed to reveal the evolutionary relationship of various species. analysis shows that the JARID1C gene is expressed in various tissues, but at different levels. The expression levels of this gene are higher in the brain and gonad than in other tissues, suggesting that the JARID1C protein plays a role in porcine brain and gonad functions.

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