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Clostridium perfringens enterotoxin E110D Purification and crystallization of Clostridium perfringens enterotoxin mutant E110D
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Fig.2 CPE
CPE
CPE&CsSoaking
Fig.1 CPECs
SPring-8 BL41XU
Clostridium perfringens enterotoxin : CPECPE31935 kDaNCCPECPE4 37 Glu94Glu110AspGlyAsp48AlaCPECPEXXAFS (X)nickel-NTA Affinity column chromatography (3720hr)(OD600=0.61 mM IPTG2518hr)
D48A-E94D
CPE12 mg/ml 295K
0.1 M CsClO/N(over night)
E94D
(E94D,E110D)0.1M HEPES pH7.015% PEG4000E110D
0.1M Sodium acetate0.1M HEPES pH7.512% PEG4000D48A
(D48A)0.1M Sodium acetate0.1M HEPES pH7.512% PEG4000E94DFig.5 XAFS(CPE-E94D)CsCPE-E94D()XAFSCsedgepeakremotepeakremoteCsCPE-E110D()CsE94DCsCsCPE-E94D
Results & DiscussionManufacture of a new cesium ion scavenger using a toxin having molecular switch ability
Fig.3 CPE-D48A-E94DNative-PAGE
MethodIntroduction
ConclusionAcknowledgment66242480720146MW(kDa)Asp94Asp94Cs (K0.3445 ) Glu110Asp94Glu110Glu110Glu110Glu110Glu110Glu110Glu110Glu110
Fig.4 CPEFig.6(CPE-E94D) Fig.7 peakFig.8 remote
Cs
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