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Cloning, sequencing and expression of ribonucleotide reductase R2 from Trypanosoma brucei
Author(s) -
Matthias Dormeyer,
Ralf Schöneck,
Gunnar Dittmar,
R. Luise KrauthSiegel
Publication year - 1997
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/s0014-5793(97)01036-3
Subject(s) - ribonucleotide reductase , trypanosoma brucei , cloning (programming) , biology , gene , microbiology and biotechnology , biochemistry , expression cloning , northern blot , trypanosoma , gene expression , reductase , peptide sequence , enzyme , genetics , protein subunit , computer science , programming language
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.