Rapid Assessment of Pepsin Column Activity for Reliable HDX-MS Studies
Rapid Assessment of Pepsin Column Activity for Reliable HDX-MS Studies
复制标题
快速评估胃蛋白酶柱活性以进行可靠的 HDX-MS 研究
DOI:
10.1021/jasms.1c00080
复制
发表时间:
2021
影响因子:
3.2
通讯作者:
Guttman, Miklos
中科院分区:
文献类型:
--
作者:
Vorauer, Clint;Wrigley, Michael S.;Rincon Pabon, Juan P.;Watson, Michael J.;Mundorff, Charlie C.;Weis, David D.;Guttman, Miklos
Hydrogen/deuterium exchange with mass spectrometry (HDX-MS) is a widely used technique to probe protein structural dynamics, track conformational changes, and map protein–protein interactions. Most HDX-MS studies employ a bottom-up approach utilizing the acid active protease pepsin to digest the protein of interest, often utilizing immobilized protease in a column format. The extent of proteolytic cleavage will greatly influence data quality and presents a major source of variation in HDX-MS studies. Here, we present a simple cocktail of commonly available peptides that are substrates of pepsin and can serve as a rapid check of pepsin column activity. The peptide-based assay requires no system modifications and provides an immediate readout to check and benchmark pepsin activity across different HDX-MS platforms.