Detection of salt bridges to lysines in solution in barnase

作者:Williamson Mike P*; Hounslow Andrea M; Ford Joe; Fowler Kyle; Hebditch Max; Hansen Poul Erik
来源:Chemical Communications, 2013, 49(84): 9824-9826.
DOI:10.1039/c3cc45602a

摘要

We show that salt bridges involving lysines can be detected by deuterium isotope effects on NMR chemical shifts of the sidechain amine. Lys27 in the ribonuclease barnase is salt bridged, and mutation of Arg69 to Lys retains a partially buried salt bridge. The salt bridges are functionally important.

  • 出版日期2013