title: Casein kinase 1 isoform 2 is essential for bloodstream form Trypanosoma brucei.
abstract: Induction of RNA interference targeted against casein kinase 1 isoform 2 (TbCK1.2, Tb927.5.800) in bloodstream form Trypanosoma brucei in vitro results in rapid cessation of growth, gross morphological changes, multinucleation and ultimately cell death. A null mutant of the highly homologous casein kinase 1 isoform 1 (Tb927.5.790) in bloodstream form T. brucei displays no growth or morphological phenotype in vitro. A truncated form of TbCK1.2 expressed in Escherichia coli as a GST fusion produces catalytically active recombinant protein, facilitating screening for small molecule inhibitors. These data show that TbCK1.2 is an attractive target for anti-trypanosomal drug discovery.
authors.affiliation: Division of Biological Chemistry and Drug Discovery, College of Life Sciences, University of Dundee, Dundee DD1 5EH, UK. m.d.urbaniak@dundee.ac.uk
authors.forename: Michael D
authors.initials: MD
authors.lastname: Urbaniak
mesh_terms: D000818:Animals; D047389:Casein Kinase I / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D006801:Humans; D007700:Kinetics; D008969:Molecular Sequence Data; D020033:Protein Isoforms / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D015800:Protozoan Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D011993:Recombinant Fusion Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D014346:Trypanosoma brucei brucei / Q000737:chemistry / Q000201:enzymology* / Q000235:genetics / Q000254:growth & development*; D014353:Trypanosomiasis, African / Q000097:blood / Q000469:parasitology*
chemical_list: D020033:Protein Isoforms; D015800:Protozoan Proteins; D011993:Recombinant Fusion Proteins; D047389:Casein Kinase I