Crystallization and preliminary X-ray analysis of L-2-haloacid dehalogenase from xanthobacter autotrophicus GJ10
✍ Scribed by Ivo S. Ridder; Henriëtte J. Rozeboom; Bauke W. Dijkstra; Jaap Kingma; Dick B. Janssen
- Book ID
- 105356361
- Publisher
- Cold Spring Harbor Laboratory Press
- Year
- 1995
- Tongue
- English
- Weight
- 225 KB
- Volume
- 4
- Category
- Article
- ISSN
- 0961-8368
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✦ Synopsis
Abstract
Haloacid dehalogenases are enzymes that cleave carbon‐chlorine or carbon‐bromine bonds of 2‐haloalkanoates. X‐ray‐quality crystals of L‐2‐haloacid dehalogenase from the 1, 2‐dichloroethane‐degrading bacterium Xanthobacter autotrophicus GJ10 have been grown at room temperature from 20% PEG 8000, 200 mM sodium formate at pH 6.8‐7.0, using macroseeding techniques. The crystals, which diffract in the X‐ray beam up to 2.0 Å resolution, belong to the spacegroup C222~1~. Cell parameters are a = 58.8 Å, b = 93.1 Å, c = 84.2 Å. A native data set to 2.3 Å has been collected, with a completeness of 97% and an R~sym~ of 6.0%.
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## Abstract A recombinant form of __Rhodobacter sphaeroides__ phosphoribulokinase (PRK), expressed in __Escherichia coli__ and isolated by affinity chromatography, was crystallized by the sitting drop vapor diffusion technique using NH~4~H~2~PO~4~ (pH 5.6) as the precipitating agent. PRK crystalliz