A general screening strategy for peptide-based fluorogenic ligands: probes for dynamic studies of PDZ domain-mediated interactions.
A general screening strategy for peptide-based fluorogenic ligands: probes for dynamic studies of PDZ domain-mediated interactions.
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DOI:
10.1021/ja900371q
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发表时间:
2009-05-20
影响因子:
15
通讯作者:
Imperiali B
中科院分区:
文献类型:
--
作者:
Sainlos M;Iskenderian WS;Imperiali B
A systematic and general approach for identifying efficient probes for class I PDZ domains based on environment-sensitive chromophores is presented. A series of peptides derived from the C-terminal sequence of Stargazin was first used with PDZ domains of PSD-95 and Shank3 to identify the optimal position and linker length for the 4-DMAP chromophore. The results were applied to well-characterized ligand sequences for each set of domains to generate high affinity probes that retain their native sequence specificity and yield remarkable fluorescence increases upon binding. These probes constitute efficient tools to study the dynamics and regulatory mechanisms of PDZ domain-mediated interactions.
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