Development of clickable active site-directed photoaffinity probes for γ-secretase.
Development of clickable active site-directed photoaffinity probes for γ-secretase.
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DOI:
10.1016/j.bmcl.2012.02.027
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发表时间:
2012-04-15
影响因子:
2.7
通讯作者:
Johnson, Douglas S.
中科院分区:
文献类型:
--
作者:
Crump, Christina J.;Ende, Christopher W. Am;Ballard, T. Eric;Pozdnyakov, Nikolay;Pettersson, Martin;Chau, De-Ming;Bales, Kelly R.;Li, Yue-Ming;Johnson, Douglas S.
We have developed clickable active site-directed photoaffinity probes for γ-secretase which incorporate a photoreactive benzophenone group and an alkyne handle for subsequent click chemistry mediated conjugation with azide-linked reporter tags for visualization (e.g., TAMRA-azide) or enrichment (e.g., biotin-azide) of labeled proteins. Specifically, we synthesized clickable analogs of L646 (2) and L505 (3) and validated specific labeling to presenilin 1 N-terminal fragment (PS1-NTF), the active site aspartyl protease component within the γ-secretase complex. Additionally we were able to also identify signal peptide peptidase (SPP) by Western blot analysis. Furthermore, we analyzed the photo-labeled proteins in an unbiased fashion by click chemistry with TAMRA-azide followed by in-gel fluorescence detection. This approach expands the utility of γ-secretase inhibitor (GSI) photoaffinity probes in that labeled proteins can be tagged with any number of azide-linked reporters groups using a single clickable photoaffinity probe for target pull down and/or fluorescent imaging applications.
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影响因子:
5.6
作者:
Osenkowski, Pamela;Li, Hua;Ye, Wenjuan;Li, Dongyang;Aeschbach, Lorene;Fraering, Patrick C.;Wolfe, Michael S.;Selkoe, Dennis J.;Li, Huilin
通讯作者:
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影响因子:
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DOI:
10.1073/pnas.0408007101
发表时间:
2004-12-07
影响因子:
11.1
作者:
Tarassishin, L;Yin, YI;Li, YM
通讯作者:
Li, YM
影响因子:
3.2
作者:
Ballell, L;Alink, KJ;Pieters, RJ
通讯作者:
Pieters, RJ