Molecular Cloning, Bioinformatics Analysis and Expression of Insulin-Like Growth Factor 2 from Tianzhu White Yak, Bos grunniens

International Journal of Molecular Sciences

Quanwei Zhang¹  Jishang Gong¹  Xueying Wang¹  Xiaohu Wu¹  Yalan Li¹  Youji Ma²  Yong Zhang¹ 

[1] College of Veterinary Medicine, Gansu Agriculture University, Lanzhou 730070, China; E-Mails:;College of Animal Science and Technology, Gansu Agriculture University, Lanzhou 730070, China; E-Mail:

关键词: Tianzhu white yak;    IGF2 gene;    rapid amplification of cDNA ends (RACE);    sequence analysis;    bioinformatics;   

DOI  :  10.3390/ijms15010504

来源: mdpi

【 摘 要 】

The IGF family is essential for normal embryonic and postnatal development and plays important roles in the immune system, myogenesis, bone metabolism and other physiological functions, which makes the study of its structure and biological characteristics important. Tianzhu white yak (Bos grunniens) domesticated under alpine hypoxia environments, is well adapted to survive and grow against severe hypoxia and cold temperatures for extended periods. In this study, a full coding sequence of the IGF2 gene of Tianzhu white yak was amplified by reverse transcription PCR and rapid-amplification of cDNA ends (RACE) for the first time. The cDNA sequence revealed an open reading frame of 450 nucleotides, encoding a protein with 179 amino acids. Its expression in different tissues was also studied by Real time PCR. Phylogenetic tree analysis indicated that yak IGF2 was similar to Bos taurus, and 3D structure showed high similarity with the human IGF2. The putative full CDS of yak IGF2 was amplified by PCR in five tissues, and cDNA sequence analysis showed high homology to bovine IGF2. Moreover the super secondary structure prediction showed a similar 3D structure with human IGF2. Its conservation in sequence and structure has facilitated research on IGF2 and its physiological function in yak.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland