Crystallization and preliminary crystallographic analysis of the type III secretion translocator chaperone SicA from Salmonella enterica.
Crystallization and preliminary crystallographic analysis of the type III secretion translocator chaperone SicA from Salmonella enterica.
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肠沙门氏菌 III 型分泌易位蛋白伴侣 SicA 的结晶和初步晶体学分析。
DOI:
10.1107/s1744309110037954
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发表时间:
2010
期刊:
影响因子:
--
通讯作者:
Tang,Liang
中科院分区:
文献类型:
--
作者:
Priyadarshi,Amit;Tang,Liang
SicA is a member of the class II chaperones in type III secretion systems which bind to the pore-forming translocators in the bacterial cytoplasm and prevent them from premature association and degradation. In this study, SicA from Salmonella enterica serovar Typhimurium was overexpressed, purified and crystallized using PEG 8000 as the precipitant. X-ray diffraction data were collected using synchrotron radiation and processed at 3.5 Å resolution. The crystal belonged to the monoclinic space group C2, with unit-cell parameters a = 180.4, b = 94.1, c = 131.8 Å, β = 130.9°. There may be eight monomers in the crystallographic asymmetric unit, corresponding to a VM of 2.52 Å3 Da−1 and a solvent content of 51.1%. This suggests an oligomerization state that differs from those of previously reported type III secretion chaperones.
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DOI:
--
发表时间:
1981
期刊:
影响因子:
--
作者:
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通讯作者:
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