Crystallization and preliminary X-ray analysis of the human-specific toxin intermedilysin.
Crystallization and preliminary X-ray analysis of the human-specific toxin intermedilysin.
复制标题
人类特异性毒素中间素的结晶和初步 X 射线分析。
DOI:
10.1107/s0907444903027240
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发表时间:
2004
期刊:
影响因子:
--
通讯作者:
Parker,MichaelW
中科院分区:
文献类型:
--
作者:
Polekhina,Galina;Giddings,KaraSue;Tweten,RodneyK;Parker,MichaelW
Intermedilysin is a human-specific toxin from Streptococcus intermedius, which is part of normal human oral flora. The bacterium is an opportunistic pathogen with a tendency for deep-seated infection in the brain and liver. Intermedilysin belongs to the cholesterol-dependent cytolysin (CDCs) family of toxins, which have been identified in several different bacteria including the serious human pathogens S. pneumoniae and Clostridium perfringens. Intermedilysin, however, is the only member that shows exclusive specificity for human cells. The toxin has a couple of non-conservative amino-acid substitutions in a tryptophan-rich region of the molecule (Cys to Ala and Trp to Pro), the most conserved region amongst the CDCs. Mutations in this region are known to render other CDCs inactive. In order to investigate the structure–function relationships of the unusual features of intermedilysin, which will help us to understand the molecular mechanism of the toxin family in general, recombinant intermedilysin has been crystallized. The crystals belong to an orthorhombic space group and contain two molecules per asymmetric unit. Diffraction data were collected to 2.3 Å using synchrotron radiation.
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影响因子:
2.9
作者:
REED, DJ;BABSON, JR;POTTER, DW
通讯作者:
POTTER, DW
影响因子:
4.8
作者:
M. Caltabiano;T. Koestler;G. Poste;R. Greig
通讯作者:
R. Greig
DOI:
--
发表时间:
1986
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Shelton,KR;Todd,JM;Egle,PM
通讯作者:
Egle,PM
DOI:
10.1016/s0006-291x(86)80447-8
发表时间:
1986
影响因子:
3.1
作者:
Shelton,KR;Egle,PM;Todd,JM
通讯作者:
Todd,JM
DOI:
10.1016/s0021-9258(17)44133-0
发表时间:
1983
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
J. Sciandra;John R. SubjeckS
通讯作者:
John R. SubjeckS