title: Cloning, sequencing, and expression of porcine interleukin-18 in Escherichia coli.
abstract: IL-18 is the new name of a novel cytokine that plays an important role in T(H1) response, primarily by its ability to induce IFN-gamma production in T cells and natural killer cells. The porcine IL-18 gene was isolated using RT-PCR from porcine alveolar macrophages. Sequence analysis of the porcine IL-18 gene has demonstrated an open reading frame of 579 base pairs encoding 192 amino acids precursor protein with a predicted molecular mass of 22 kDa. The porcine IL-18 gene shares 84% and 89% similarity to the human and canine equivalents, respectively, at the nucleotide level. The cloned IL-18 was expressed in Escherichia coli and its expression was confirmed by SDS-PAGE and Western blotting.
authors.affiliation: Department of Infectious Diseases, College of Veterinary Medicine, Chonbuk National University, Chonju, Korea.
authors.forename: J K
authors.initials: JK
authors.lastname: Oem
authors.forename: H J
authors.initials: HJ
authors.lastname: Song
authors.forename: S W
authors.initials: SW
authors.lastname: Kang
authors.forename: W S
authors.initials: WS
authors.lastname: Jeong
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D015153:Blotting, Western; D002478:Cells, Cultured; D003001:Cloning, Molecular; D004926:Escherichia coli / Q000235:genetics* / Q000378:metabolism; D020382:Interleukin-18 / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism; D016676:Macrophages, Alveolar / Q000378:metabolism; D008969:Molecular Sequence Data; D010957:Plasmids / Q000235:genetics; D011994:Recombinant Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D016415:Sequence Alignment; D013552:Swine / Q000235:genetics*
chemical_list: D020382:Interleukin-18; D011994:Recombinant Proteins