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26 March, 08:08

What is the ETD and CID in mass spectrometry? What are the differences between ETD and CID?

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  1. 26 March, 08:29
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    (ETD) based fragmentation to detect ubiquitination sites in proteins. Our results indicate that ETD can provide alternative fragmentation patterns that allow detection of glY modified lysyl side chains, in particular z+1 fragment ions derived from triply charged precursor ions. We subsequently applied ETD fragmentation-based analysis and detected novel ubiquitination sites on DNA polymerase B1 that were not easily observed using CID. We conclude that ETD can provide significant alternative fragmentation information that complements CID-derived data to improve the coverage when mapping ubiquitination sites in proteins.
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