title: Expression of human cardiac-specific homeobox protein in Escherichia coli.
abstract: Human cardiac-specific homeobox protein cDNA (hCsx) was cloned into expression plasmid pET32a and fused with Escherichia coli thioredoxin (Trx). The Trx-Csx fusion protein was under the control of bacteriophage T7 promoter. When expressed in E. coli BL21(DE3), about half of the recombinant Trx-Csx products existed in the form of insoluble inclusion bodies. When coexpressed with human protein disulfide isomerase, more than 90% of Trx-Csx products accumulated in the soluble form in the cell lysate. The recombinant Csx fusion protein was purified by one-step metal-chelating affinity chromatography.
authors.affiliation: State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, 210093, People's Republic of China.
authors.forename: J H
authors.initials: JH
authors.lastname: Zhao
authors.forename: Z
authors.initials: Z
authors.lastname: Xu
authors.forename: Z C
authors.initials: ZC
authors.lastname: Hua
mesh_terms: D002846:Chromatography, Affinity; D003001:Cloning, Molecular; D004591:Electrophoresis, Polyacrylamide Gel; D004926:Escherichia coli / Q000235:genetics / Q000378:metabolism; D000072576:Homeobox Protein Nkx-2.5; D018398:Homeodomain Proteins / Q000737:chemistry / Q000235:genetics / Q000302:isolation & purification* / Q000378:metabolism; D006801:Humans; D019704:Protein Disulfide-Isomerases / Q000378:metabolism; D011993:Recombinant Fusion Proteins / Q000737:chemistry / Q000235:genetics / Q000302:isolation & purification* / Q000378:metabolism; D012995:Solubility; D013879:Thioredoxins / Q000235:genetics; D014157:Transcription Factors / Q000737:chemistry / Q000235:genetics / Q000302:isolation & purification* / Q000378:metabolism
chemical_list: D000072576:Homeobox Protein Nkx-2.5; D018398:Homeodomain Proteins; C095552:NKX2-5 protein, human; D011993:Recombinant Fusion Proteins; D014157:Transcription Factors; D013879:Thioredoxins; D019704:Protein Disulfide-Isomerases