Phase-diagram-guided method for growth of a large crystal of glycoside hydrolase family 45 inverting cellulase suitable for neutron structural analysis

Neutron protein crystallography (NPC) is a powerful tool for determining the hydrogen position and water orientation in proteins, but a much larger protein crystal is needed for NPC than for X-ray crystallography, and thus crystal preparation is a bottleneck. To obtain large protein crystals, it is...

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Veröffentlicht in:Journal of synchrotron radiation. - 1994. - 20(2013), Pt 6 vom: 07. Nov., Seite 859-63
1. Verfasser: Nakamura, Akihiko (VerfasserIn)
Weitere Verfasser: Ishida, Takuya, Fushinobu, Shinya, Kusaka, Katsuhiro, Tanaka, Ichiro, Inaka, Koji, Higuchi, Yoshiki, Masaki, Mika, Ohta, Kazunori, Kaneko, Satoshi, Niimura, Nobuo, Igarashi, Kiyohiko, Samajima, Masahiro
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2013
Zugriff auf das übergeordnete Werk:Journal of synchrotron radiation
Schlagworte:Journal Article Research Support, Non-U.S. Gov't cellulase crystallization phase diagram neutron protein crystallography Glycoside Hydrolases EC 3.2.1.- Cellulase EC 3.2.1.4
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100 1 |a Nakamura, Akihiko  |e verfasserin  |4 aut 
245 1 0 |a Phase-diagram-guided method for growth of a large crystal of glycoside hydrolase family 45 inverting cellulase suitable for neutron structural analysis 
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520 |a Neutron protein crystallography (NPC) is a powerful tool for determining the hydrogen position and water orientation in proteins, but a much larger protein crystal is needed for NPC than for X-ray crystallography, and thus crystal preparation is a bottleneck. To obtain large protein crystals, it is necessary to know the properties of the target protein in the crystallization solution. Here, a crystal preparation method of fungal cellulase PcCel45A is reported, guided by the phase diagram. Nucleation and precipitation conditions were determined by sitting-drop vapor diffusion. Saturation and unsaturation conditions were evaluated by monitoring crystal dissolution, and a crystallization phase diagram was obtained. To obtain a large crystal, crystallization solution was prepared on a sitting bridge (diameter = 5 mm). Initial crystallization conditions were 40 µl of crystallization solution (40 mg ml(-1) protein with 30.5% 3-methyl-1,5-pentanediol in 50 mM tris-HCl pH 8.0) with a 1,000 µl reservoir (61% 3-methyl-1,5,-pentanediol in 50 mM tris-HCl pH 8.0) at 293 K. After the first crystal appeared, the concentration of precipitant in the reservoir solution was reduced to 60% to prevent formation of further crystals. Finally, we obtained a crystal of 6 mm(3) volume (3 mm × 2 mm × 1 mm), which was suitable for neutron diffraction 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a cellulase 
650 4 |a crystallization phase diagram 
650 4 |a neutron protein crystallography 
650 7 |a Glycoside Hydrolases  |2 NLM 
650 7 |a EC 3.2.1.-  |2 NLM 
650 7 |a Cellulase  |2 NLM 
650 7 |a EC 3.2.1.4  |2 NLM 
700 1 |a Ishida, Takuya  |e verfasserin  |4 aut 
700 1 |a Fushinobu, Shinya  |e verfasserin  |4 aut 
700 1 |a Kusaka, Katsuhiro  |e verfasserin  |4 aut 
700 1 |a Tanaka, Ichiro  |e verfasserin  |4 aut 
700 1 |a Inaka, Koji  |e verfasserin  |4 aut 
700 1 |a Higuchi, Yoshiki  |e verfasserin  |4 aut 
700 1 |a Masaki, Mika  |e verfasserin  |4 aut 
700 1 |a Ohta, Kazunori  |e verfasserin  |4 aut 
700 1 |a Kaneko, Satoshi  |e verfasserin  |4 aut 
700 1 |a Niimura, Nobuo  |e verfasserin  |4 aut 
700 1 |a Igarashi, Kiyohiko  |e verfasserin  |4 aut 
700 1 |a Samajima, Masahiro  |e verfasserin  |4 aut 
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773 1 8 |g volume:20  |g year:2013  |g number:Pt 6  |g day:07  |g month:11  |g pages:859-63 
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