Structural basis for the unfolding of anthrax lethal factor by protective antigen oligomers.
Structural basis for the unfolding of anthrax lethal factor by protective antigen oligomers.
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DOI:
10.1038/nsmb.1923
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发表时间:
2010-11
影响因子:
16.8
通讯作者:
中科院分区:
文献类型:
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The protein transporter, anthrax lethal toxin, is comprised of protective antigen (PA), a transmembrane translocase, and lethal factor (LF), a cytotoxic enzyme. Following assembly into holotoxin complexes, PA forms an oligomeric channel that unfolds LF and translocates it into the host cell. We report the crystal structure of the core of a lethal toxin complex to 3.1-Å resolution; the structure contains a PA octamer bound to four LF PA-binding domains (LFN). The first α helix and β strand of each LFN unfold and dock into a deep amphipathic cleft on the surface of the PA octamer, which we call the α clamp. The α clamp possesses nonspecific polypeptide binding activity and is functionally relevant to efficient holotoxin assembly, PA octamer formation, and LF unfolding and translocation. This structure provides insight on the mechanism of translocation-coupled protein unfolding.
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影响因子:
4.8
作者:
Lacy, DB;Mourez, M;Collier, RJ
通讯作者:
Collier, RJ
影响因子:
16.8
作者:
通讯作者:
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DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
影响因子:
14.9
作者:
Davis IW;Leaver-Fay A;Chen VB;Block JN;Kapral GJ;Wang X;Murray LW;Arendall WB 3rd;Snoeyink J;Richardson JS;Richardson DC
通讯作者:
Richardson DC
影响因子:
2.9
作者:
Christensen, KA;Krantz, BA;Collier, RJ
通讯作者:
Collier, RJ