Probing sites of histidine phosphorylation with iodination and tandem mass spectrometry
Citations Over Time
Abstract
Phosphorylation at histidine residues occurs frequently in biology, but is often overlooked in proteomics experiments due to extreme acid lability. A new method utilizing histidine labeling with iodine to record information about phosphorylation is described. Essentially, phosphorylated histidine residues are not labeled while unmodified histidine undergoes complete iodination. Iodination is stabile both under acidic conditions, and upon collisional activation in the gas phase. This enables site-specific information to be retained with standard liquid chromatography separations and tandem mass spectrometry by collisional activation. Semi-quantitative information about the relative amounts of phosphorylated versus unmodified states can also be easily obtained from the relative ion abundances. This new method should provide a pathway forward for analyzing histidine phosphorylation in complex systems.
Related Papers
- → P-lability and radical P-alignment(2014)116 cited
- → Scanned stripping chronopotentiometry of metal complexes: lability diagnosis and stability computation(2004)61 cited
- → Ligand Mixture Effects in Metal Complex Lability(2007)31 cited
- → Evaluation of heavy metal lability in polluted soils by a cation exchange batch procedure(1998)25 cited
- → Another look at the cold lability of enzymes(1978)55 cited