China Animal Husbandry and Veterinary Medicine ›› 2023, Vol. 50 ›› Issue (2): 440-450.doi: 10.16431/j.cnki.1671-7236.2023.02.002

• Biotechnology • Previous Articles     Next Articles

Cloning,Bioinformatics Analysis and Tissue Expression of UCP1 Gene in Nubian Goats

WEI Yirong1, ZHENG Zihua2, ZHANG Sanbao1, SONG Ying1, JIANG Haiyu1, SUN Wenyue1, CHENG Pengfei1, LIU Yufan1, ZOU Jianwei1, HUANG Yanna1, PAN Yan3, JIANG Qinyang1   

  1. 1. College of Animal Science and Technology, Guangxi University, Nanning 530004, China;
    2. Agricultural and Animal Husbandry Industry Development Research Institute, Guangxi University, Nanning 530004, China;
    3. Guangxi Vocational University of Agriculture, Nanning 530009, China
  • Received:2022-07-05 Online:2023-02-05 Published:2023-02-06

Abstract: 【Objective】 This study was aimed to clone uncoupling protein-1 (UCP1) gene in Nubian goats and carried out bioinformatics analysis,and detect its expression difference of UCP1 gene in different tissues of Nubian goats,in order to provide data for studying its regulatory function in fat metabolism and analyzing the function of UCP1 gene in Nubian goats.【Method】 Using the cDNA from the subcutaneous fat tissue in Nubian goats as a template,the CDS region of UCP1 gene in Nubian goats was amplified by PCR and cloned,sequence similarity alignment and phylogentic tree contruction were carried out with other species,and the bioinformatics analysis of UCP1 protein was carried out.The expression of UCP1 gene in heart,liver,spleen,kidney,longissimus dorsi muscle,subcutaneous fat and abdominal fat of Nubian goats were detected by Real-time quantitative PCR.【Result】 The CDS sequence of UCP1 gene in Nubian goats was 918 bp and encoded 305 amino acids.The similarity of amino acid sequence of UCP1 gene between Nubian goats and Ovis aries, Bos indicus× Bos taurus, Bubalus bubalis, Oryx dammah, Cervus elaphus, Canelus ferus, Equus asinus, Aliuropoda melanoleuca and Homo sapiens were 98.1%,97.0%,96.5%,96.1%,95.8%,91.0%,87.0%,86.5% and 83.8%,respectively.The phylogenetic tree indicated that the closest was to Ovis aries and the furthest was to Homo sapiens.The results of bioinformatics analysis showed that the molecular mass of UCP1 protein in Nubian goats was 32.97 ku,with an isoelectric point of 9.29,which was a basic proteins.UCP1 protein lacked stability,an overall average hydrophilicity was 0.20,which possessed certain hydrophilicity.The lipid solubility coefficient was 91.70,the predicted value of the number of amino acid residues in transmembrane helices was 15.94,the predicted value of the number of transmembrane helices in the first 60 amino acids of the protein was 8.76,the overall probability of being located on the cytoplasmic side of the membrane was 29.03%,and it belonged to nonsecretory proteins.The secondary structure was composed of alpha helix (48.85%),random coil (27.54%),extended chain (16.39%),and beta turn (7.21%).UCP1 had a total of 28 phosphate sites,5 potential O-glycosylation sites and 2 N-glycosylation potential sites.Real-time quantitative PCR results showed that the expression of UCP1 gene in subcutaneous fat of Nubian goats was relatively high,which was significantly higher than other tissues (P<0.05),while the expression of longissimus dorsi muscle in Nubian goats was the lowest.【Conclusion】The CDS sequence of UCP1 gene was successfully amplified,UCP1 was a basic protein lacking stability and hydrophilicity. UCP1 gene was widely expressed in various tissues of Nubian goats, which was mainly expressed in subcutaneous fat and spleen.The results provided a theoretical basis for subsequent research on the mechanism of UCP1 gene in the energy supply of fat thermogenesis.

Key words: Nubian goats; UCP1 gene; cloning; bioinformatics analysis; tissue expression

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