Nuclear Receptor subfamily 1, group H, member 4 (NR1H4) is a receptor for bile acids and has an important role in regulating energy metabolism in liver, muscle and adipose tissues in humans and animals. In this study, we cloned the full coding region of NR1H4 gene from porcine Longissimus dorsi by Rapid amplification of cDNA end (RACE). Results indicated that the open reading frame of NR1H4 covered 1461 bp encoding 486 amino acid residues and the deduced amino acid sequence was 91-94 % identical to that of Homo sapiens, Bos taurus, Macaca mulatta, Gorilla gorilla, and Ovis aries. Bioinformatic analysis indicated that NR1H4 contained 31 phosphorylation sites with 14 serine, 6 threonine and 11 tyrosine. One single nucleotide polymorphism (SNP) was detected by PCR-RFLP in 3' untranslated region of exon 9 (NR1H4) and the allele frequency analysis showed that A allele frequency was low among 396 pigs from five breeds. The NR1H4 mRNA expression pattern showed that NR1H4 gene was expressed highly in live and Longissimus dorsi. This work provided an important experimental basis for further research on mechanism of lipid metabolism and fat deposition in pigs.
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