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Article: Non-zwitterionic structures of aliphatic-only peptides mediated the formation and dissociation of gas phase radical cations

TitleNon-zwitterionic structures of aliphatic-only peptides mediated the formation and dissociation of gas phase radical cations
Authors
KeywordsCopper(II) complexes
Electron transfer
Non-zwitterionic structures
Peptide fragmentation
Radical cationic peptides
Issue Date2006
PublisherJohn Wiley & Sons Ltd. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jhome/6043
Citation
Journal Of Mass Spectrometry, 2006, v. 41 n. 7, p. 931-938 How to Cite?
AbstractWe have investigated how the non-zwitterionic and zwitterionic structures of aliphatic-only tripeptides affect the formation and dissociation of peptide radical cations in the gas phase. The non-zwitterionic forms of the aliphatic-only peptides in their metal complexes play an important role in determining whether the electron transfer pathway predominates. We extended this study by synthesizing permanent non-zwitterionic and zwitterionic forms of aliphatic-only peptide radical cations and exploring their reactivities in the gas phase. Collision-induced dissociation spectra demonstrated the feasibility of generating both non-zwitterionic and zwitterionic forms. Radical cations in zwitterionic forms may indeed mediate the β and γ carbon-carbon bond cleavages of leucine and isoleucine side chains from the GlyGlyXle radical peptides; this feature allows leucine and isoleucine residues to be distinguished unambiguously. Copyright © 2006 John Wiley & Sons, Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/68610
ISSN
2015 Impact Factor: 2.541
2015 SCImago Journal Rankings: 0.919
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLam, CNWen_HK
dc.contributor.authorRuan, EDLen_HK
dc.contributor.authorMa, CYen_HK
dc.contributor.authorChu, IKen_HK
dc.date.accessioned2010-09-06T06:06:07Z-
dc.date.available2010-09-06T06:06:07Z-
dc.date.issued2006en_HK
dc.identifier.citationJournal Of Mass Spectrometry, 2006, v. 41 n. 7, p. 931-938en_HK
dc.identifier.issn1076-5174en_HK
dc.identifier.urihttp://hdl.handle.net/10722/68610-
dc.description.abstractWe have investigated how the non-zwitterionic and zwitterionic structures of aliphatic-only tripeptides affect the formation and dissociation of peptide radical cations in the gas phase. The non-zwitterionic forms of the aliphatic-only peptides in their metal complexes play an important role in determining whether the electron transfer pathway predominates. We extended this study by synthesizing permanent non-zwitterionic and zwitterionic forms of aliphatic-only peptide radical cations and exploring their reactivities in the gas phase. Collision-induced dissociation spectra demonstrated the feasibility of generating both non-zwitterionic and zwitterionic forms. Radical cations in zwitterionic forms may indeed mediate the β and γ carbon-carbon bond cleavages of leucine and isoleucine side chains from the GlyGlyXle radical peptides; this feature allows leucine and isoleucine residues to be distinguished unambiguously. Copyright © 2006 John Wiley & Sons, Ltd.en_HK
dc.languageengen_HK
dc.publisherJohn Wiley & Sons Ltd. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jhome/6043en_HK
dc.relation.ispartofJournal of Mass Spectrometryen_HK
dc.rightsJournal of Mass Spectrometry. Copyright © John Wiley & Sons Ltd.en_HK
dc.subjectCopper(II) complexesen_HK
dc.subjectElectron transferen_HK
dc.subjectNon-zwitterionic structuresen_HK
dc.subjectPeptide fragmentationen_HK
dc.subjectRadical cationic peptidesen_HK
dc.titleNon-zwitterionic structures of aliphatic-only peptides mediated the formation and dissociation of gas phase radical cationsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1076-5174&volume=41&spage=931&epage=938&date=2006&atitle=Non-zwitterionic+structures+of+aliphatic-only+peptides+mediated+the+formation+and+dissociation+of+gas+phase+radical+cations+en_HK
dc.identifier.emailMa, CY: macy@hkucc.hku.hken_HK
dc.identifier.emailChu, IK: ivankchu@hku.hken_HK
dc.identifier.authorityMa, CY=rp00759en_HK
dc.identifier.authorityChu, IK=rp00683en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/jms.1052en_HK
dc.identifier.pmid16770832-
dc.identifier.scopuseid_2-s2.0-33746293271en_HK
dc.identifier.hkuros118316en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33746293271&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume41en_HK
dc.identifier.issue7en_HK
dc.identifier.spage931en_HK
dc.identifier.epage938en_HK
dc.identifier.isiWOS:000239291500010-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridLam, CNW=7402990888en_HK
dc.identifier.scopusauthoridRuan, EDL=14047192000en_HK
dc.identifier.scopusauthoridMa, CY=7402924944en_HK
dc.identifier.scopusauthoridChu, IK=7103327484en_HK

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