The functional divergence of transcriptional factors is critical in the evolution of transcriptional regulation. However, the mechanism of functional divergence among these factors remains unclear. Here, we performed an evolutionary analysis for positive selection in members of the myogenic regulatory factor (MRF) gene family of vertebrates. We selected 153 complete vertebrate MRF nucleotide se...

Recruitment of multipotent mesodermal cells to the myogenic lineage is mediated by the transcription factor Myf5, the first of the myogenic regulatory factors to be expressed in most sites of myogenesis in the mouse embryo. Among numerous elements controlling the spatiotemporal pattern of Myf5 expression, the -58/-56 kb distal Myf5 enhancer directs expression in myogenic progenitor cells in lim...

In Senegalese sole (Solea senegalensis Kaup), growth is negatively correlated to dietary lipid levels. To understand the molecular basis of this effect a molecular toolbox of 12 genes, including fgf6, fst, mstn1, myf5, mrf4, myod1, myod2, myog, myHC, mylc2, igf1r and insr, was developed. The expression profiles of these genes were investigated in white muscle and liver of fish fed with three di...

Skeletal muscle is one of a several adult post-mitotic tissues that retain the capacity to regenerate. This relies on a population of quiescent precursors, termed satellite cells. Here we describe two novel markers of quiescent satellite cells: CD34, an established marker of hematopoietic stem cells, and Myf5, the earliest marker of myogenic commitment. CD34(+ve) myoblasts can be detected in pr...

Objective: The effect of MYF5 gene polymorphism on body weight was investigated in 100 Friesian bull calves. Methodology: Blood samples were collected from each animal for DNA extraction. The PCR-TaqI digestion of 1190 bp of a fragment of MYF5 gene revealed that, two fragments (983 and 207 bp) for genotype BB, three fragments (1190, 983 and 207 bp) for genotype AB and undigested fragment (1190 ...

Myf5, a member of the myogenic regulatory factor family, plays a major role in determining myogenic cell fate at the onset of skeletal muscle formation in the embryo. Spatiotemporal control of its expression during development requires multiple enhancer elements spread over >100 kb at the Myf5 locus. Transcription in embryonic limbs is regulated by a 145-bp element located at -57.5 kb from the ...

Satellite cells are a heterogeneous population of myogenic precursors responsible for muscle growth and repair in mammals. The objectives of the experiment were to examine the growth rates and degree of heterogeneity within bovine satellite cells (BSC) isolated from young and adult animals. The BSC were harvested from the semimembranosus of young (4.3 ± 0.5 d) and adult (estimated 24 to 27 mo) ...

Bu çalışmada Simental sığır ırkına ait toplam 202 hayvanda STAT5A-AvaI ve MYF5-TaqI polimorfizmleri ile günlük süt verimi arasındaki ilişkinin araştırılması amaçlanmıştır. PZR tekniği çoğaltılan 215 bç uzunluğundaki STAT5A gen bölgesi AvaI restriksiyon enzimi kesilirken, 512 MYF5 TaqI kesilmiştir. Belirlenen genotipleri laktasyon verimleri ilişki Tek Yönlü Varyans Analizi (ANOVA) değerlendirilm...