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Crystallization and preliminary X-ray study of native and selenomethionyl beta-1,4-mannanase AaManA from Alicyclobacillus acidocaldariusTc-12-31.


ABSTRACT: AaManA, a beta-1,4-mannanase from the thermoacidophile Alicyclobacillus acidocaldarius Tc-12-31, was expressed in Escherichia coli and purified in a form suitable for X-ray crystallographic analysis. Crystals were obtained using the hanging-drop vapour-diffusion method at 291 K using ammonium dihydrogen phosphate as a precipitant. Data were collected from native mannanase and from a selenomethionyl derivative to 1.90 and 1.99 A, respectively, at 100 K. The native crystal belongs to the orthorhombic space group P2(1)2(1)2(1), with unit-cell parameters a = 44.34, b = 75.55, c = 88.02 A. The derivative crystal belonged to the same space group as native AaManA, with unit-cell parameters a = 44.55, b = 75.70, c = 92.66 A.

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC2374155 | biostudies-literature | 2008 Mar

REPOSITORIES: biostudies-literature

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Crystallization and preliminary X-ray study of native and selenomethionyl beta-1,4-mannanase AaManA from Alicyclobacillus acidocaldariusTc-12-31.

Zhang Yueling Y   Gao Feng F   Xue Yanfen Y   Zeng Yan Y   Peng Hao H   Qi Jianxun J   Ma Yanhe Y  

Acta crystallographica. Section F, Structural biology and crystallization communications 20080229 Pt 3


AaManA, a beta-1,4-mannanase from the thermoacidophile Alicyclobacillus acidocaldarius Tc-12-31, was expressed in Escherichia coli and purified in a form suitable for X-ray crystallographic analysis. Crystals were obtained using the hanging-drop vapour-diffusion method at 291 K using ammonium dihydrogen phosphate as a precipitant. Data were collected from native mannanase and from a selenomethionyl derivative to 1.90 and 1.99 A, respectively, at 100 K. The native crystal belongs to the orthorhom  ...[more]

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