Site-Specific Protein Labeling and Generation of Defined Ubiquitin-Protein Conjugates Using an Asparaginyl Endopeptidase.
Site-Specific Protein Labeling and Generation of Defined Ubiquitin-Protein Conjugates Using an Asparaginyl Endopeptidase.
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使用天冬酰胺内肽酶的位点特异性蛋白标记和定义的泛素蛋白结合物的生成。
DOI:
10.1021/jacs.2c02191
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发表时间:
2022-07-27
影响因子:
15
通讯作者:
Lang, Kathrin
中科院分区:
文献类型:
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作者:
Fottner, Maximilian;Heimgartner, Johannes;Gantz, Maximilian;Muehlhofer, Rahel;Nast-Kolb, Timon;Lang, Kathrin
Asparaginyl endopeptidases (AEPs) have recently been widely utilized for peptide and protein modification. Labeling is however restricted to protein termini, severely limiting flexibility and scope in creating diverse conjugates as needed for therapeutic and diagnostic applications. Here, we use genetic code expansion to site-specifically modify target proteins with an isopeptide-linked glycylglycine moiety that serves as an acceptor nucleophile in AEP-mediated transpeptidation with various probes containing a tripeptidic recognition motif. Our approach allows simple and flexible labeling of recombinant proteins at any internal site and leaves a minimal, entirely peptidic footprint (NGG) in the conjugation product. We show site-specific labeling of diverse target proteins with various biophysical probes, including dual labeling at an internal site and the N-terminus. Furthermore, we harness AEP-mediated transpeptidation for generation of ubiquitin- and ubiquitin-like-modifier conjugates bearing a native isopeptide bond and only one point mutation in the linker region.
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影响因子:
4.7
作者:
Agarwal, Paresh;Bertozzi, Carolyn R.
通讯作者:
Bertozzi, Carolyn R.
影响因子:
48
作者:
Chen, I;Howarth, M;Ting, AY
通讯作者:
Ting, AY
影响因子:
18.2
作者:
Akimoto G;Fernandes AP;Bode JW
通讯作者:
Bode JW
DOI:
10.1073/pnas.1411179111
发表时间:
2014-09-16
影响因子:
11.1
作者:
Dorr, Brent M.;Ham, Hyun Ok;Liu, David R.
通讯作者:
Liu, David R.
影响因子:
46.2
作者:
通讯作者:
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