title: [Codon optimization and expression in Pichia pastoris of E2 gene of classical swine fever virus].
abstract: Codon bias was one of the important parameter which influence heterogenous gene expression, optimizing codon sequence could improve expression level of heterogenous gene. In the preview study, wildtype E2 gene was expressed poorly in Pichia pastoris, in order to improve the expression level of E2 gene in Pichia pastoris, the low usage codons of E2 gene were mutated into high usage codons in Pichia pastoris by directed-mutagenesis based on PCR. The result showed that, compared with the results reported in preview study, the expression level of E2 gene in Pichia pastoris was improved observably by substituting 24 low usage codons of E2 gene for the high usage synonymous codons. It suggested the stragety to improve the expression of E2 gene in Pichia pastoris by codon optimization was successful.
authors.affiliation: Key Laboratory of Agricultural Minister for Animal Virology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Science, Lanzhou 730046, China. hanxueq@yahoo.com.cn
authors.forename: Xueqing
authors.initials: X
authors.lastname: Han
authors.forename: Xiangtao
authors.initials: X
authors.lastname: Liu
authors.forename: Yongguo
authors.initials: Y
authors.lastname: Zhang
authors.lastname: Zhangyong
authors.forename: Qingge
authors.initials: Q
authors.lastname: Xie
mesh_terms: D001483:Base Sequence; D006692:Classical Swine Fever Virus / Q000235:genetics*; D003062:Codon; D015870:Gene Expression; D008969:Molecular Sequence Data; D016297:Mutagenesis, Site-Directed; D010843:Pichia / Q000235:genetics* / Q000378:metabolism; D015202:Protein Engineering; D014759:Viral Envelope Proteins / Q000235:genetics* / Q000378:metabolism
chemical_list: D003062:Codon; D014759:Viral Envelope Proteins; C087086:glycoprotein E2, classical swine fever virus