›› 2018, Vol. 45 ›› Issue (6): 1463-1470.doi: 10.16431/j.cnki.1671-7236.2018.06.005

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Cloning and Bioinformatics Analysis of BCL2A Gene in Jinchuan Yak

WU Kainian1, WANG Li2, LI Chenyang1   

  1. 1. Institute of Qinghai-Tibet Plateau, Southwest Minzu University, Chengdu 610041, China;
    2. Colloge of Life Science and Technology, Southwest Minzu University, Chengdu 610041, China
  • Received:2017-12-19 Online:2018-06-20 Published:2018-06-15

Abstract:

This study was aimed to explore the characteristics of B cell lymphoma 2 related A1 (BCL2A1) gene in Jinchuan yak.BCL2A1 gene was amplified by PCR using Jinchuan yak blood DNA as a template,and the gene sequences and protein structures were analyzed using DNAStar,ExPASy,ABCpred and other bioinformatics softwares.The results showed that the length of BCL2A1 gene was 622 bp,GenBank accession number:MG459158.The open reading frame was 516 bp,which could encode 171 amino acids with molecular weight of 19.46 ku.The higher proportions of amino acids were Val (V) and Lys (K),up to 9.4% and 8.8%,respectively.The theoretical isoelectric point was 4.99.The unstability index was 17.44,with transmembrane helices(Scores>500).The main secondary structure was alpha helix of 60.82%.There was a BCL2 domain,the tertiary structure model had the highest homology with human BCL2A1 (72.79%).BCL2A1 had a B cell potential epitope.Alignment with Bos mutus amino acid sequence showed that there were five amino acids mutations.Phylogenetic relationships revealed that the genetic relationship was the closest between Jinchuan yak and Bos mutus,and the homology was 98.5%.The BCL2A1 gene of Jinchuan yak was cloned successfully,which was highly conserved in mammals.It provided a theoretical evidence for further study on the function of BCL2A1 gene in yak.

Key words: BCL2A1 gene; Jinchuan yak; cloning; protein analysis; phylogenetic analysis

CLC Number: