ArticleActa crystallographica. Section F, Structural biology and crystallization communications2013
Expression, crystallization and preliminary X-ray crystallographic analysis of cellobiose 2-epimerase from Dictyoglomus turgidum DSM 6724.
Article in Acta crystallographica. Section F, Structural biology and crystallization communications, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Cellobiose 2-epimerase epimerizes and isomerizes β-1,4- and α-1,4-gluco-oligosaccharides. N-Acyl-D-glucosamine 2-epimerase (DT_epimerase) from Dictyoglomus turgidum has an unusually high catalytic activity towards its substrate cellobiose. DT_epimerase was expressed, purified and crystallized. Crystals were obtained of both His-tagged DT_epimerase and untagged DT_epimerase. The crystals of His-tagged DT_epimerase diffracted to 2.6 Å resolution and belonged to the monoclinic space group P2₁, with unit-cell parameters a=63.9, b=85.1, c=79.8 Å, β=110.8°. With a Matthews coefficient VM of 2.18 Å3 Da(-1), two protomers were expected to be present in the asymmetric unit with a solvent content of 43.74%. The crystals of untagged DT_epimerase diffracted to 1.85 Å resolution and belonged to the orthorhombic space group P2₁2₁2₁, with unit-cell parameters a=55.9, b=80.0, c=93.7 Å. One protomer in the asymmetric unit was expected, with a corresponding VM of 2.26 Å3 Da(-1) and a solvent content of 45.6%.
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