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Bamford, V. et al.

Crystallization and preliminary X-ray crystallographic analysis of a periplasmic tetrahaem flavocytochrome c3 from Shewanella frigidimarina NCIMB400 which has fumarate reductase activity.

The fumarate reductase of Escherichia coli and other bacteria is a membrane-bound enzyme consisting of four subunits. A soluble periplasmic 64 kDa tetrahaem flavocytochrome c3 from Shewanella frigidimarina NCIMB400 which possesses a catalytic fumarate reductase activity has been crystallized. The crystals belong to space group P212121 with unit-cell parameters a = 72.4, b = 110.1, c = 230.2 A. Assuming a molecular dimer in the asymmetric unit, the crystals contain 65% solvent and, when cryocooled to 100 K, the crystals diffract to at least 3.0 A resolution. The crystals, however, display an inherent lack of isomorphism and the plausibility of a MAD phasing experiment has therefore been investigated by measuring the iron K absorption edge from a single crystal.[1]

References

Crystallization and preliminary X-ray crystallographic analysis of a periplasmic tetrahaem flavocytochrome c3 from Shewanella frigidimarina NCIMB400 which has fumarate reductase activity. Bamford, V., Dobbin, P.S., Lee, S.C., Reilly, A., Powell, A.K., Richardson, D.J., Hemmings, A.M. Acta Crystallogr. D Biol. Crystallogr. (1999) [Pubmed]

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