Structural insights into the molecular ruler mechanism of the endoplasmic reticulum aminopeptidase ERAP1.
Structural insights into the molecular ruler mechanism of the endoplasmic reticulum aminopeptidase ERAP1.
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DOI:
10.1038/srep00186
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发表时间:
2011
影响因子:
4.6
通讯作者:
Guo, Hwai-Chen
中科院分区:
文献类型:
--
作者:
Gandhi, Amit;Lakshminarasimhan, Damodharan;Sun, Yixin;Guo, Hwai-Chen
Endoplasmic reticulum aminopeptidase 1 (ERAP1) is an essential component of the immune system, because it trims peptide precursors and generates the N--restricted epitopes. To examine ERAP1's unique properties of length- and sequence-dependent processing of antigen precursors, we report a 2.3 Å resolution complex structure of the ERAP1 regulatory domain. Our study reveals a binding conformation of ERAP1 to the carboxyl terminus of a peptide, and thus provides direct evidence for the molecular ruler mechanism.
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