title: Formation of 1:1 complex of the cytokine receptor homologous region of granulocyte colony-stimulating factor receptor with ligand.
abstract: The cytokine receptor homologous (CRH) region of the murine granulocyte colony-stimulating factor (G-CSF) receptor was secreted using a Escherichia coli maltose binding protein (MBP) fusion system. The CRH region was prepared from the periplasmic fraction by G-CSF affinity column chromatography and restriction protease factor Xa digestion, and was purified to homogeneity. The purified CRH region specifically bound G-CSF, with an apparent dissociation constant (kd) of about 1.5 x 10(-9) M. A 1:1 CRH.G-CSF complex was established by gel-filtration high pressure liquid chromatography (HPLC). However, a 2:1 stoichiometric complex was not established, as in the case of the growth hormone (GH) receptor [Recent Prog. Hormone Res., 48, 233-275 (1993)].
authors.affiliation: Protein Engineering Research Institute, Osaka, Japan.
authors.forename: O
authors.initials: O
authors.lastname: Hiraoka
authors.forename: H
authors.initials: H
authors.lastname: Anaguchi
authors.forename: Y
authors.initials: Y
authors.lastname: Ota
mesh_terms: D018528:ATP-Binding Cassette Transporters; D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D002352:Carrier Proteins / Q000235:genetics / Q000378:metabolism; D011232:Chemical Precipitation; D002851:Chromatography, High Pressure Liquid; D004926:Escherichia coli / Q000235:genetics / Q000378:metabolism; D029968:Escherichia coli Proteins; D007700:Kinetics; D008024:Ligands; D058619:Maltose-Binding Proteins; D051379:Mice; D008969:Molecular Sequence Data; D009004:Monosaccharide Transport Proteins; D033902:Periplasmic Binding Proteins; D018121:Receptors, Cytokine / Q000096:biosynthesis / Q000235:genetics / Q000378:metabolism*; D016188:Receptors, Granulocyte Colony-Stimulating Factor / Q000235:genetics / Q000378:metabolism*; D011993:Recombinant Fusion Proteins / Q000235:genetics / Q000378:metabolism; D017386:Sequence Homology, Amino Acid
chemical_list: D018528:ATP-Binding Cassette Transporters; D002352:Carrier Proteins; D029968:Escherichia coli Proteins; D008024:Ligands; C461619:MalE protein, E coli; D058619:Maltose-Binding Proteins; D009004:Monosaccharide Transport Proteins; D033902:Periplasmic Binding Proteins; D018121:Receptors, Cytokine; D016188:Receptors, Granulocyte Colony-Stimulating Factor; D011993:Recombinant Fusion Proteins; C461599:maltose transport system, E coli