China Animal Husbandry and Veterinary Medicine ›› 2021, Vol. 48 ›› Issue (1): 22-34.doi: 10.16431/j.cnki.1671-7236.2021.01.003

• Biotechnology • Previous Articles     Next Articles

Cloning,Bioinformatics Analysis and Expression of AdipoR1 and AdipoR2 Genes from Qinchuan Beef Cattle

CHEN Xingyi1, YANG Xinran1, SUN Bing1, ZAN Linsen1,2   

  1. 1. College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China;
    2. National Beef Cattle Improvement Center, Yangling 712100, China
  • Received:2020-07-16 Online:2021-01-20 Published:2021-01-15

Abstract: The purpose of the experiment was to use bioinformatics to clone and analyze of the CDS regions of the AdipoR1 and AdipoR2 genes of the new Qinchuan beef line (hereinafter referred to as "Qinchuan beef cattle"),and to explore its expression in different tissues and muscle cells of Qinchuan beef cattle induced differentiation at different time.Taking Qinchuan beef cattle as the research object,the CDS region sequences of AdipoR1 and AdipoR2 genes were amplified by PCR,and their functional structure was predicted using bioinformatics software.At the same time,the expression level of AdipoR1 and AdipoR2 genes in 15 tissues of beef cattle and different time after induction differentiation was obtained using qRT-PCR and analyzed for differences then.The results showed that the full length of AdipoR1 gene coding sequence of Qinchuan beef cattle was 1 128 bp,encoding 375 amino acids,the protein molecular weight was 42 446.41 u,and the theoretical isoelectric point was 6.70.The secondary structure of AdipoR1 protein was mainly composed of α-helix.The prediction results of the secondary and tertiary structures were consistent.AdipoR1 protein was hydrophilic protein and had no signal peptide site.The full length of the AdipoR2 gene coding sequence was 1 161 bp,encoding 386 amino acids,the protein molecular weight was 43 707.70 u,and the theoretical isoelectric point was 6.27.The subcellular localization results showed that AdipoR1 protein was 60.9% likely to be located on the cell membrane,and AdipoR2 protein was 73.9% likely to be located on the cell membrane.The results of the amino acids phylogenetic tree of different species showed that the amino acid sequences encoded by the AdipoR1 and AdipoR2 genes of Qinchuan beef cattle were closest to Bos indicus and Bos mutus,respectively.qRT-PCR results showed that AdipoR1 and AdipoR2 genes were all expressed in 15 tissues of Qinchuan beef cattle such as heart,liver,muscle,and so on.And the expression level in muscle tissues was the highest,which was significantly higher than other tissues (P<0.01).There were also obvious differences in the timing of muscle cell differentiation.The experiment revealed the differences in the expression of AdipoR1 and AdipoR2 genes in different tissues and muscle cells of Qinchuan beef cattle at different time after induction differentiation,in order to lay a foundation for further exploration of the biological functions and regulatory mechanisms of AdipoR1 and AdipoR2 genes.

Key words: Qinchuan beef cattle; AdipoR1 gene; AdipoR2 gene; gene cloning; tissue expression

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