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Communication: Protein Structure in the Gas Phase: The Influence of Side-Chain Microsolvation

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons22220

Warnke,  Stephan
Molecular Physics, Fritz Haber Institute, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons21614

Helden,  Gert von
Molecular Physics, Fritz Haber Institute, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons32738

Pagel,  Kevin
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Zitation

Warnke, S., Helden, G. v., & Pagel, K. (2013). Communication: Protein Structure in the Gas Phase: The Influence of Side-Chain Microsolvation. Journal of the American Chemical Society, 135(4), 1177-1180. doi:10.1021/ja308528d.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-000E-7AE1-E
Zusammenfassung
There is ongoing debate about the extent to which protein structure is retained after transfer into the gas phase. Here, using ion-mobility spectrometry, we investigated the impact of side-chain–backbone interactions on the structure of gas-phase protein ions by noncovalent attachment of crown ethers (CEs). Our results indicate that in the absence of solvent, secondary interactions between charged lysine side chains and backbone carbonyls can significantly influence the structure of a protein. Once the charged residues are capped with CEs, certain charge states of the protein are found to undergo significant structural compaction.