title: Cloning, sequencing and expression of ribonucleotide reductase R2 from Trypanosoma brucei.
abstract: Ribonucleotide reductase (RR) is an attractive drug target molecule. The gene of the R2 protein of Trypanosoma brucei RR (nrd B) has been cloned. It encodes a protein of 337 residues which shows about 60% identity with other eukaryotic R2 proteins. All residues which bind the iron center, the tyrosyl radical or are supposed to participate in the radical transfer are conserved in the trypanosomal protein sequence. Overexpression of the gene in E. coli resulted in 2-5 mg pure R2 protein from 100 ml bacterial cell culture. Northern blot analysis revealed a transcript of 1.85 kb in bloodstream and procyclic forms of the parasite.
authors.affiliation: Biochemie-Zentrum Heidelberg, Ruprecht-Karls-Universität, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Dormeyer
authors.forename: R
authors.initials: R
authors.lastname: Schöneck
authors.forename: G A
authors.initials: GA
authors.lastname: Dittmar
authors.forename: R L
authors.initials: RL
authors.lastname: Krauth-Siegel
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D003001:Cloning, Molecular; D018076:DNA, Complementary; D016054:DNA, Protozoan / Q000737:chemistry; D004926:Escherichia coli / Q000201:enzymology; D017125:Genes, Protozoan; D006801:Humans; D051379:Mice; D008969:Molecular Sequence Data; D010963:Plasmodium falciparum / Q000201:enzymology; D011994:Recombinant Proteins / Q000096:biosynthesis / Q000737:chemistry; D012264:Ribonucleotide Reductases / Q000096:biosynthesis* / Q000737:chemistry / Q000235:genetics; D016415:Sequence Alignment; D017386:Sequence Homology, Amino Acid; D014346:Trypanosoma brucei brucei / Q000201:enzymology* / Q000235:genetics
chemical_list: D018076:DNA, Complementary; D016054:DNA, Protozoan; D011994:Recombinant Proteins; D012264:Ribonucleotide Reductases; C108427:ribonucleotide reductase R2 subunit