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Cytochrome b5 (CYB5A) is an important electron transfer protein with homologues in a number of different organisms. In pigs, CYB5A is related to boar taint because of its role in androstenone biosynthesis. To determine the variety of CYB5A expression in pig breeds, genetic variations in the porcine CYB5A promoter region in both Chinese and European pig breeds were examined. Three single nucleotide polymorphisms (NC_010443.4:

g.165901487delG, g.165901767T>C and g.165902078C>T) were identified in the porcine CYB5A promoter region. These SNPs occurred in different frequencies in Chinese and European pigs. Chinese pigs were primarily haplotype B (denoted as delG-C-T: the position of nt …

Increasing numbers of fat cells in adipose tissue are attributed to proliferation of preadipocytes or immature adipocytes in the early stages as well as adipogenic differentiation in the later stages of adipogenesis. Although both events are involved in the increase in fat cell numbers, they are contrary to each other in that the former requires cell cycle activity whereas the latter requires cell cycle withdrawal. Therefore, appropriate regulation of cell cycle inhibition is critical to adipogenesis.

To explore the important cell cycle inhibitors and study their expression in adipogenesis, a strategy was adopted that combined the Gene Expression Omnibus (GEO) …