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Purification, crystallization and preliminary crystallographic analysis of very‐long‐chain acyl‐CoA dehydrogenase from Caenorhabditis elegans

Purification, crystallization and preliminary crystallographic analysis of very‐long‐chain... Acyl‐CoA dehydrogenase (acyl‐CoA:(acceptor) 2,3‐oxidoreductase; EC 1.3.99.3) catalyzes the first reaction step in mitochondrial fatty‐acid β‐oxidation. Here, the very‐long‐chain acyl‐CoA dehydrogenase from Caenorhabditis elegans (cVLCAD) has been cloned and overexpressed in Escherichia coli strain BL21 (DE3). Interestingly, unlike other very‐long‐chain acyl‐CoA dehydrogenases, cVLCAD was found to form a tetramer by size‐exclusion chromatography coupled with in‐line static light‐scattering, refractive‐index and ultraviolet measurements. Purified cVLCAD (12 mg ml−1) was successfully crystallized by the hanging‐drop vapour‐diffusion method under conditions containing 100 mM Tris–HCl pH 8.0, 150 mM sodium chloride, 200 mM magnesium formate and 13% PEG 3350. The crystal has a tetragonal form and a complete diffraction data set was collected and processed to 1.8 Å resolution. The crystal belonged to space group C2, with unit‐cell parameters a = 138.6, b = 116.7, c = 115.3 Å, α = γ = 90.0, β = 124.0°. A self‐rotation function indicated the existence of one noncrystallographic twofold axis. A preliminary molecular‐replacement solution further confirmed the presence of two molecules in one asymmetric unit, which yields a Matthews coefficient VM of 2.76 Å3 Da−1 and a solvent content of 55%. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acta Crystallographica Section F Wiley

Purification, crystallization and preliminary crystallographic analysis of very‐long‐chain acyl‐CoA dehydrogenase from Caenorhabditis elegans

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References (27)

Publisher
Wiley
Copyright
International Union of Crystallography, 2010
ISSN
1744-3091
eISSN
1744-3091
DOI
10.1107/S1744309110005002
pmid
20383014
Publisher site
See Article on Publisher Site

Abstract

Acyl‐CoA dehydrogenase (acyl‐CoA:(acceptor) 2,3‐oxidoreductase; EC 1.3.99.3) catalyzes the first reaction step in mitochondrial fatty‐acid β‐oxidation. Here, the very‐long‐chain acyl‐CoA dehydrogenase from Caenorhabditis elegans (cVLCAD) has been cloned and overexpressed in Escherichia coli strain BL21 (DE3). Interestingly, unlike other very‐long‐chain acyl‐CoA dehydrogenases, cVLCAD was found to form a tetramer by size‐exclusion chromatography coupled with in‐line static light‐scattering, refractive‐index and ultraviolet measurements. Purified cVLCAD (12 mg ml−1) was successfully crystallized by the hanging‐drop vapour‐diffusion method under conditions containing 100 mM Tris–HCl pH 8.0, 150 mM sodium chloride, 200 mM magnesium formate and 13% PEG 3350. The crystal has a tetragonal form and a complete diffraction data set was collected and processed to 1.8 Å resolution. The crystal belonged to space group C2, with unit‐cell parameters a = 138.6, b = 116.7, c = 115.3 Å, α = γ = 90.0, β = 124.0°. A self‐rotation function indicated the existence of one noncrystallographic twofold axis. A preliminary molecular‐replacement solution further confirmed the presence of two molecules in one asymmetric unit, which yields a Matthews coefficient VM of 2.76 Å3 Da−1 and a solvent content of 55%.

Journal

Acta Crystallographica Section FWiley

Published: Apr 1, 2010

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