Peptide probes containing a non-hydrolyzable phosphotyrosine-mimetic residue for enrichment of protein tyrosine phosphatases
Peptide probes containing a non-hydrolyzable phosphotyrosine-mimetic residue for enrichment of protein tyrosine phosphatases
复制标题
含有不可水解的磷酸酪氨酸模拟残基的肽探针,用于富集蛋白质酪氨酸磷酸酶
DOI:
10.1002/pmic.202100144
复制
发表时间:
2021
期刊:
影响因子:
3.4
通讯作者:
Ishihama Y.
中科院分区:
文献类型:
--
作者:
Tsumagari K;Niinae T;Otaka A;Ishihama Y.
We developed peptide probes containing a non‐hydrolyzable phosphotyrosine mimetic, 4‐[difluoro(phosphono)methyl]‐L‐phenylalanine (F2Pmp) for the enrichment of protein tyrosine phosphatases (PTPs). We found that different F2Pmp probes can enrich different PTPs, depending on the probe sequence. Furthermore, proteins containing a Src homology 2 (SH2) domain were enriched together. Importantly, probes containing phosphotyrosine instead of F2Pmp failed to enrich PTPs due to dephosphorylation during the pulldown step. This enrichment approach using peptides containing F2Pmp could be a generic tool for tyrosine phosphatome analysis without the use of antibodies.