Biotechnology Bulletin ›› 2017, Vol. 33 ›› Issue (2): 97-101.doi: 10.13560/j.cnki.biotech.bull.1985.2017.02.014

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Cloning and Expression Profile of Interleukin-1β Gene in Schizothorax prenanti

DUAN Hui-qin1, WANG Li2   

  1. 1. Institute of Qinghai-Tibet Plateau,Southwest University for Nationalities,Chengdu 610041;
    2. College of Life Science and Technology,Southwest University for Nationalities,Chengdu 610041
  • Received:2016-06-16 Online:2017-02-26 Published:2017-02-08

Abstract: This work aims to characterize interleukin-1β(IL-1β)gene of Schizothorax prenanti. First,RT-PCR was used to amplify IL-1β gene with cDNA of S. prenanti spleen as template. Then,the IL-1β gene sequence was analyzed with various bioinformatics tools,and the expressions in 6 tissues of S. prenanti were detected used RT-PCR. As results,the length of IL-1β gene was 1 252 bp,and it encoded 276 amino acids. Its GenBank accession number was KU886235,the molecular weight of IL-1β was 31.25 kD,and pI was 5.45. It was induced as a hydrophilic protein,and its secondary structure mainly consisted of random coil and extended strand. There were 4 N-glycosylation sites and 16 phosphorylation sites in this protein. Phylogenetic relationships revealed that S. prenanti presented a closest genetic relationship with Cyprinus carpio and Carassius auratus. The analysis of tissue expression indicated that IL-1β gene was mainly expressed in the spleen and kidney. It provides theoretical evidence for further studying the biological function of IL-1β gene.

Key words: Schizothorax prenanti, interleukin-1β, cloning, protein analysis, gene expression