Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 56, Issue 27, Pages 7912-7915Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201702330
Keywords
electrospray; ion desalting; mass spectrometry; proteins
Categories
Funding
- National Institutes of Health [R01GM097357]
Ask authors/readers for more resources
Nonvolatile salts are essential for the structures and functions of many proteins and protein complexes but can severely degrade performance of native mass spectrometry by adducting to protein and protein complex ions, thereby reducing sensitivity and mass measuring accuracy. Small nanoelectrospray emitters are used to form protein and protein complex ions directly from high-ionic-strength (> 150 mm) nonvolatile buffers with salts that mimic the extracellular environment. Charge-state distributions are not obtained for proteins and protein complexes from six commonly used nonvolatile buffers and >= 150 mm Na+ with conventionally sized nanoelectrospray emitter tips but are resolved with 0.5 mu m tips. This method enables mass measurements of proteins and protein complexes directly from a variety of commonly used buffers with high concentrations of nonvolatile salts and eliminates the need to buffer exchange into volatile ammonium buffers traditionally used in native mass spectrometry.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available