Browsing CHEM Faculty Scholarship by Author "Anbalagan, Victor"
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Elucidation of the collision induced dissociation pathways of water and alcohol coordinated complexes containing the uranyl cation
Van Stipdonk, Michael J.; Anbalagan, Victor; Chien, Winnie; Gresham, Garold L.; Groenewold, Gary S.; Hanna, Dorothy A. (Springer, 2003-11-01)Multiple-stage tandem mass spectrometry was used to characterize the dissociation pathways for complexes composed of (1) the uranyl ion, (2) nitrate or hydroxide, and (3) water or alcohol. The complex ions were derived ... -
Formation of [b(n) + 17 + Ag]+ product ions from Ag+ cationized native and acetylated peptides
Anbalagan, Victor; Perera, B. A.; Silva, A. T. M.; Gallardo, A. L.; Barber, M.; Barr, J. M.; Terkarli, S. M.; Talaty, Erach R.; Van Stipdonk, Michael J. (John Wiley and Sons, 2002-09-01)We compared the tandem mass spectra of a range of native and acetylated Ag(+) cationized peptides to determine the influence of the derivatization step on the abundance of the [b(n) + 17 + Ag](+) product ions. Using ... -
Gas-phase investigation of Pd(II)-alanine complexes with small native and derivatized peptides containing histidine
Anbalagan, Victor; Van Stipdonk, Michael J. (John Wiley and Sons, 2003-09-01)We report here the generation of gas-phase complexes containing Pd(II), a ligand (deprotonated alanine, A-), and/or N-terminus derivatized peptides containing histidine as one of the amino acids. The species were produced ... -
Influence of "alternative" C-terminal amino acids on the formation of [b3 + 17 + Cat]+ products from metal cationized synthetic tetrapeptides
Anbalagan, Victor; Silva, A. T. M.; Rajagopalachary, S; Bulleigh, Kellis; Talaty, Erach R.; Van Stipdonk, Michael J. (John Wiley and Sons, 2004-05-01)The aim of this study was to investigate the dissociation patterns, and in particular the relative abundance of [b(3) + 17 + Cat](+), for peptides with C-termini designed to allow transfer of the -OH required to generate ... -
Influence of a ring substituent on the tendency to form H(2)O adducts to Ag(+) complexes with phenylalanine analogues in an ion trap mass spectrometer
Perera, B. A.; Gallardo, A. L.; Barr, J. M.; Tekarli, S. M.; Anbalagan, Victor; Talaty, Erach R.; Van Stipdonk, Michael J. (John Wiley and Sons, 2002-04-01)In a previous report we showed that certain binary Ag(+)-amino acid complexes formed adduct ions by the attachment of a single water and methanol molecule when stored in an ion trap mass spectrometer: complexes with aliphatic ... -
Intrinsic hydration of monopositive uranyl hydroxide, nitrate, and acetate cations
Chien, Winnie; Anbalagan, Victor; Zandler, Melvin E.; Van Stipdonk, Michael J.; Hanna, Dorothy A.; Gresham, Garold L.; Groenewold, Gary S. (Springer, 2004-06-01)The intrinsic hydration of three monopositive uranyl-anion complexes (UO(2)A)(+) (where A = acetate, nitrate, or hydroxide) was investigated using ion-trap mass spectrometry (IT-MS). The relative rates for the formation ... -
Investigation of intramolecular proton migration in a series of model, metal-cationized tripeptides using in situ generation of an isotope label
Bulleigh, Kellis; Howard, Angela; Do, Trang; Wu, Qun; Anbalagan, Victor; Van Stipdonk, Michael J. (John Wiley and Sons, 2006-01-01)In this study we used an isotope label, generated in situ, to investigate intramolecular proton migration or scrambling during formation of [b(2)+17+Li](+) products by collision-induced dissociation (CID) of Li(+)-cationized ... -
McLafferty-type rearrangement in the collision-induced dissociation of Li+, Na+ and Ag+ cationized esters of N-acetylated peptides
Anbalagan, Victor; Patel, J. N.; Niyakorn, G.; Van Stipdonk, Michael J. (John Wiley and Sons, 2003-01-01)In this study we investigated the multi-stage collision-induced dissociation (CID) of N-terminally acetylated di-, tri- and tetrapeptides in the form of C-terminal ethyl, n-propyl, isopropyl, n-butyl and tert-butyl esters ... -
Production and collision-induced dissociation of gas-phase, water- and alcohol-coordinated uranyl complexes containing halide or perchlorate anions
Anbalagan, Victor; Chien, Winnie; Gresham, Garold L.; Groenewold, Gary S.; Van Stipdonk, Michael J. (John Wiley and Sons, 2004-01-01)Electrospray ionization was used to generate mono-positive gas-phase complexes of the general formula [UO2A(S)n]+ where A = OH, Cl, Br, I or ClO4, S = H2O, CH3OH or CH3CH2OH, and n = 1-3. The multiple-stage dissociation ...