Reference: Urban A, et al. (2003) Optimisation of expression and purification of the recombinant Yol066 (Rib2) protein from Saccharomyces cerevisiae. J Chromatogr B Analyt Technol Biomed Life Sci 786(1-2):187-95

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Abstract


Yeast protein Yol066 (encoded by YOL066 ORF, also known as Rib2) possesses two distinct sequence domains: C-terminal deaminase domain and N-terminal part related to RNA:pseudouridine (psi)-synthases. The deaminase domain is implicated in the riboflavine biosynthesis, while the exact function of the RNA:Psi-synthase domain remains obscure. Here we report the optimisation of growth conditions and purification scheme for recombinant His(6)-tagged Yol066 expressed in E. coli BL21(DE3) using pET28 plasmid. Production of soluble Yol066 protein is best at low temperature (18 degrees C) and IPTG concentration (50 micro M) and Yol066 purification was achieved using metal-affinity and ion-exchange chromatography. This optimised protocol yields about 10 mg of highly purified recombinant Yol066 from 3 l of E. coli culture.

Reference Type
Journal Article | Research Support, Non-U.S. Gov't
Authors
Urban A, Ansmant I, Motorin Y
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