PMID: 26767259Jan 16, 2016Paper

Cloning, expression and bioinformatics analysis of pyruvate dehydrogenase of Echinococcus granulosus

Zhongguo xue xi chong bing fang zhi za zhi = Chinese journal of schistosomiasis control
Ying ChenWei Hu

Abstract

To clone and express Echinococcus granulosus pyruvate dehydrogenase (EgPDH) gene and analyze EgPDH protein with bioinformatics tools and online database. The total RNAs of E. granulosus was extracted and reversely transcribed into cDNA. The EgPDH gene was cloned into pET28b to construct the recombinant vector and expressed in E. coli BL21 (DE3) system subsequently. The signal peptide, transmembrane helices and subcellular location in EgPDH sequence were analyzed by the online software SignalP4.1, TMHMM sever v.2.0 and TargetP1.1, respectively. Subsequently, the structure of EgPDH was predicted by SMART. Finally, the homologue sequence and conserved sites were aligned by using BLASTP and GeneDoc among the homologous sequences of EgPDH. Based on the alignment of PDH sequence, an evolutionary tree of E. granulosus and other species were constructed by the neighbor joining method of MEGA6 software. The EgPDH gene was successfully amplified from cDNA of E. granulosus and expressed in the soluble fractions. The bioinformatics analysis revealed that EgPDH was a classical secreted protein and contained transketolase domain. The homology analysis revealed that the amino acid sequence of EgPDH was highly conserved in catalytic sites Glu5...Continue Reading

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