title: Expression of human IL-13 receptor alpha2 extracellular domain in Pichia pastoris.
abstract: Interleukin-13 receptor alpha2 (IL-13Ralpha2) binds IL-13 with high affinity and plays an important role in IL-13 signaling as a decoy receptor. We expressed the extracellular domain of human IL-13Ralpha2 (1-313) in methylotrophic yeast Pichia pastoris. SDS-PAGE analysis by PAS staining and Western blot analysis detected the product of the extracellular domain of human IL-13Ralpha2 as glycoprotein from P. pastoris. The yield of purified extracellular domain of human IL-13Ralpha2 was 2mg from 1L of culture. From CD analysis, the 2D structure of the purified IL-13Ralpha2 showed the typical beta-sheet. ELISA of the purified IL-13Ralpha2 detected the binding activity for human IL-13. Thus, it was found that the active extracellular domain of human IL-13Ralpha2 was expressed from P. pastoris.
authors.affiliation: Department of Immunology, Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
authors.forename: Takatoshi
authors.initials: T
authors.lastname: Ohkuri
authors.forename: Chika
authors.initials: C
authors.lastname: Takeda
authors.forename: Yuichiro
authors.initials: Y
authors.lastname: Yoshida
authors.forename: Kenji
authors.initials: K
authors.lastname: Izuhara
authors.forename: Taiji
authors.initials: T
authors.lastname: Imoto
authors.forename: Tadashi
authors.initials: T
authors.lastname: Ueda
mesh_terms: D000595:Amino Acid Sequence; D004591:Electrophoresis, Polyacrylamide Gel; D006801:Humans; D053663:Interleukin-13 Receptor alpha2 Subunit / Q000096:biosynthesis* / Q000737:chemistry / Q000302:isolation & purification; D008969:Molecular Sequence Data; D010843:Pichia / Q000235:genetics / Q000378:metabolism*; D017434:Protein Structure, Tertiary; D011994:Recombinant Proteins / Q000096:biosynthesis / Q000737:chemistry; D014170:Transformation, Genetic
chemical_list: D053663:Interleukin-13 Receptor alpha2 Subunit; D011994:Recombinant Proteins