Chemoproteomic profiling of kinases in live cells using electrophilic sulfonyl triazole probes.
Chemoproteomic profiling of kinases in live cells using electrophilic sulfonyl triazole probes.
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使用亲电磺酰基三唑探针对活细胞中激酶的化学蛋白质组学分析。
DOI:
10.1039/d0sc06623k
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发表时间:
2021-01-21
期刊:
影响因子:
8.4
通讯作者:
Hsu KL
中科院分区:
文献类型:
--
作者:
Huang T;Hosseinibarkooie S;Borne AL;Granade ME;Brulet JW;Harris TE;Ferris HA;Hsu KL
Sulfonyl-triazoles are a new class of electrophiles that mediate covalent reaction with tyrosine residues on proteins through sulfur-triazole exchange (SuTEx) chemistry. Recent studies demonstrate the broad utility and tunability of SuTEx chemistry for chemical proteomics and protein ligand discovery. Here, we present a strategy for mapping protein interaction networks of structurally complex binding elements using functionalized SuTEx probes. We show that the triazole leaving group (LG) can serve as a releasable linker for embedding hydrophobic fragments to direct molecular recognition while permitting efficient proteome-wide identification of binding sites in live cells. We synthesized a series of SuTEx probes functionalized with a lipid kinase fragment binder for discovery of ligandable tyrosines residing in catalytic and regulatory domains of protein and metabolic kinases in live cells. We performed competition studies with kinase inhibitors and substrates to demonstrate that probe binding is occurring in an activity-dependent manner. Our functional studies led to discovery of probe-modified sites within the C2 domain that were important for downregulation of protein kinase C-alpha in response to phorbol ester activation. Our proof of concept studies highlight the triazole LG of SuTEx probes as a traceless linker for locating protein binding sites targeted by complex recognition elements in live cells. Sulfonyl-triazole probes modified with a kinase recognition element are developed for live cell activity-based profiling to identify tyrosine sites located in catalytic and regulatory domains that are important for kinase function.
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影响因子:
16
作者:
Lee, T;Hoofnagle, AN;Ahn, NG
通讯作者:
Ahn, NG
影响因子:
15
作者:
Browne, Christopher M.;Jiang, Baishan;Marto, Jarrod A.
通讯作者:
Marto, Jarrod A.
影响因子:
15
作者:
Bos J;Muir TW
通讯作者:
Muir TW
影响因子:
14.8
作者:
Bradshaw JM;McFarland JM;Paavilainen VO;Bisconte A;Tam D;Phan VT;Romanov S;Finkle D;Shu J;Patel V;Ton T;Li X;Loughhead DG;Nunn PA;Karr DE;Gerritsen ME;Funk JO;Owens TD;Verner E;Brameld KA;Hill RJ;Goldstein DM;Taunton J
通讯作者:
Taunton J
影响因子:
8.6
作者:
Franks CE;Campbell ST;Purow BW;Harris TE;Hsu KL
通讯作者:
Hsu KL