Crystallization and evaluation of hen egg-white lysozyme crystals for protein pH titration in the crystalline state

To observe the ionized status of the amino acid residues in proteins at different pH (protein pH titration in the crystalline state) by neutron diffraction, hen egg-white lysozyme was crystallized over a wide pH range (2.5-8.0). Crystallization phase diagrams at pH 2.5, 6.0 and 7.5 were determined....

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Veröffentlicht in:Journal of synchrotron radiation. - 1994. - 15(2008), Pt 3 vom: 15. Mai, Seite 312-5
1. Verfasser: Iwai, Wakari (VerfasserIn)
Weitere Verfasser: Yagi, Daichi, Ishikawa, Takuya, Ohnishi, Yuki, Tanaka, Ichiro, Niimura, Nobuo
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2008
Zugriff auf das übergeordnete Werk:Journal of synchrotron radiation
Schlagworte:Evaluation Study Journal Article Research Support, Non-U.S. Gov't Muramidase EC 3.2.1.17
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520 |a To observe the ionized status of the amino acid residues in proteins at different pH (protein pH titration in the crystalline state) by neutron diffraction, hen egg-white lysozyme was crystallized over a wide pH range (2.5-8.0). Crystallization phase diagrams at pH 2.5, 6.0 and 7.5 were determined. At pH < 4.5 the border between the metastable region and the nucleation region shifted to the left (lower precipitant concentration) in the phase diagram, and at pH > 4.5 the border shifted to the right (higher precipitant concentration). The qualities of these crystals were characterized using the Wilson plot method. The qualities of all crystals at different pH were more or less equivalent (B-factor values within 25-40). It is expected that neutron diffraction analysis of these crystals of different pH provides equivalent data in quality for discussions of protein pH titration in the crystalline state of hen egg-white lysozyme 
650 4 |a Evaluation Study 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
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700 1 |a Yagi, Daichi  |e verfasserin  |4 aut 
700 1 |a Ishikawa, Takuya  |e verfasserin  |4 aut 
700 1 |a Ohnishi, Yuki  |e verfasserin  |4 aut 
700 1 |a Tanaka, Ichiro  |e verfasserin  |4 aut 
700 1 |a Niimura, Nobuo  |e verfasserin  |4 aut 
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