Light-induced uncaging for time-resolved observations of biochemical reactions by MAS NMR spectroscopy.
Related Articles Light-induced uncaging for time-resolved observations of biochemical reactions by MAS NMR spectroscopy.
Chemistry. 2020 Apr 02;:
Authors: de Mos J, Jakob A, Becker-Baldus J, Heckel A, Glaubitz C
Abstract
Light-induced activation of biomolecules by uncaging of photolabile protection groups has found many applications for triggering biochemical reactions with minimal perturbations directly within cells. Such an approach might also offer unique advantages for solid-state NMR experiments on membrane proteins when initiating reactions within or at the membrane directly within the closed MAS rotor. Here, we demonstrate that the integral membrane protein E. coli diacylglycerol kinase (DgkA), which catalyzes the phosphorylation of diacylglycerol, can be controlled by light under MAS-NMR conditions. Uncaging of NPE-ATP or of lipid substrate NPE-DOG by in situ illumination triggers its enzymatic activity, which can be monitored by real-time 31 P-MAS NMR. This proof-of-concept illustrates that combing MAS-NMR with uncaging strategies and illumination methods offers new possibility for controlling biochemical reactions in situ.
PMID: 32240561 [PubMed - as supplied by publisher]
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