China Animal Husbandry and Veterinary Medicine ›› 2021, Vol. 48 ›› Issue (6): 1967-1975.doi: 10.16431/j.cnki.1671-7236.2021.06.009

• Biotechnology • Previous Articles     Next Articles

Cloning of Ephrin A5 Gene and Its Expressing in Different Tissues in Red Steppe

XUE Jiajia1,2, QIN Lihong2, CAO Yang2, GAO Yi2, LIU Lixiang2, LI Xu2, XIAO Cheng2, WANG Jing2, ZHANG Guoliang2,3,4,5   

  1. 1. College of Animal Science and Technology, Jilin Agricultural University, Changchun 130000, China;
    2. Jilin Academy of Agricultural Sciences, Gongzhuling 130033, China;
    3. Jilin Kuncheng Animal Husbandry Technology Development Co., Ltd, Gongzhuling 136100, China;
    4. Key Laboratory of Beef Cattle Genetics and Breeding, Ministry of Agriculture and Rural Agriculture, Gongzhuling 136100, China;
    5. Jilin Beef Cattle Breeding and Breeding Technology Innovation Center, Gongzhuling 136100, China
  • Received:2020-09-11 Online:2021-06-20 Published:2021-06-18

Abstract: The purpose of this study was to explore the gene function of ephrin A5(EFNA5) in Chinese Red steppe,and to detect the difference of EFNA5 gene expression in different tissues of Chinese Red steppe by bioinformatics analyzed.Primers were designed according to the predicted sequence of EFNA5 gene in GenBank (accession No.:NM_001076432.1).Verification of complete coding sequence of EFNA5 gene was obtained by PCR and sequencing.Using analysis software to carry out sequence similarity alignment and construct phylogenetic tree.The corresponding amino acid sequence was obtained.The physical and chemical property and subcellular structure was analysed by online prediction software.Protein hydrophilicity,hydrophobicity and phosphorylation sites were analysed.Protein secondary structure was predicted and protein tertiary structure model was constructed.EFNA5 gene expression in tissues of Chinese Red steppe was detected by Real-time quantitative PCR.The results showed that the EFNA5 gene of Chinese Red steppe had the highest similartiy with common cattle and American bison (100% and 99.8%),and with sheep and human were 95.6% and 97.2% respectively,and lower similartiy with dolphins,chickens,horses,rhesus monkeys,mice and pigs (83.6%,85.8%,84.5%,84.9%,84.1% and 82.8%,respectively).The CDS of EFNA5 gene was 687 bp,encoding 228 amino acids.The molecular formula of the protein was C1183H1791N315O339S13,the molecular weight was 26.266 ku,the theoretical isoelectric point was 5.97.The protein instability index was 49.66,and the total average hydrophilicity was -0.313. Phosphorylation sites prediction analysis showed that there were 27 phosphorylation sites in EFNA5 protein.The results of subcellular localization showed that EFNA5 protein was mainly located in cytoplasm (26.1%),secretory system vesicles (27.1%),nucleus (13.0%),mitochondria (13.0%),plasma membrane (8.7%),endoplasmic reticulum (4.3%),golgi apparatus (4.3%),cytoskeleton (4.3%) and vacuole (4.3%).The main forms of secondary structure were α-helix (18.9%),β-turn (30.2%),β-fold (26.4%) and irregular crimp (24.5%),which were consistent with the prediction of tertiary structure.The expression of EFNA5 gene was the highest in kidney and stomach,and the least in lung.There was significant difference in different tissues of Chinese Red steppe (P<0.05).This study could provide reference for further investigation of the effects of EFNA5 gene on lipid metabolism in livestock and the screening of quality candidate genes in Red steppe.

Key words: Chinese Red steppe; EFNA5 gene; cloning; bioinformatics analysis; expression difference

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