Optimization of Met8p crystals through protein-storage buffer manipulation.

Autor: Schubert HL; Department of Biochemistry, University of Utah, Salt Lake City, UT 84132, USA. heidi@snowbird.med.utah.edu, Raux E, Warren MJ, Wilson KS
Jazyk: angličtina
Zdroj: Acta crystallographica. Section D, Biological crystallography [Acta Crystallogr D Biol Crystallogr] 2001 Jun; Vol. 57 (Pt 6), pp. 867-9. Date of Electronic Publication: 2001 May 25.
DOI: 10.1107/s0907444901004619
Abstrakt: Sirohaem, the prosthetic group of assimilatory sulfite and nitrite reductases, is a modified tetrapyrrole that belongs to the same fraternity of metallo-prosthetic groups as haem, chlorophyll, cobalamin and coenzyme F430 [Warren & Scott (1990), Trends Biochem Sci. 15, 486-491]. In Saccharomyces cerevisiae, the last step in the biosynthesis of sirohaem involves Met8p, a bifunctional enzyme responsible for both the NAD(+)-dependent dehydrogenation of the corrin ring and ferrochelation. Optimization of the protein storage buffer according to the results of crystallization trials resulted in a more monodisperse protein solution. Crystals were grown that diffracted to 2.1 A.
Databáze: MEDLINE