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Harsha Gunawardena

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TOP 3
Ian K Webb; Frank A Londry; Harsha Gunawardena
Implementation of dipolar direct current (DDC) collision-induced dissociation in storage and transmission modes on a quadrupole/time-of-flight tandem mass spectrometer.
Marija Mentinova; Harsha Gunawardena
Intra- and inter-molecular cross-linking of peptide ions in the gas phase: reagents and conditions.
Kerry M Hassell; Yves Le Blanc; Harsha Gunawardena
Chemical noise reduction via mass spectrometry and ion/ion charge inversion: amino acids.

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All Publications

2011: Ian K Webb; Frank A Londry; Harsha Gunawardena
Implementation of dipolar direct current (DDC) collision-induced dissociation in storage and transmission modes on a quadrupole/time-of-flight tandem mass spectrometer.
Rapid communications in mass spectrometry : RCM 2011;25(17):2500-10.
2011: Marija Mentinova; Harsha Gunawardena
Intra- and inter-molecular cross-linking of peptide ions in the gas phase: reagents and conditions.
Journal of the American Society for Mass Spectrometry 2011;22(5):912-21.
2011: Kerry M Hassell; Yves Le Blanc; Harsha Gunawardena
Chemical noise reduction via mass spectrometry and ion/ion charge inversion: amino acids.
Analytical chemistry 2011;83(9):3252-5.
2011: Kerry M Hassell; Yves Le Blanc; Harsha Gunawardena
Charge inversion via concurrent cation and anion transfer: application to corticosteroids.
Rapid communications in mass spectrometry : RCM 2011;25(4):476-82.
2011: Harsha Gunawardena; Marija Mentinova
Ion/neutral, ion/electron, ion/photon, and ion/ion interactions in tandem mass spectrometry: do we need them all? Are they enough?
Journal of the American Society for Mass Spectrometry 2011;22(1):3-12.
2011: Anastasia Kharlamova; Harsha Gunawardena
Negative electrospray droplet exposure to gaseous bases for the manipulation of protein charge state distributions.
Analytical chemistry 2011;83(1):431-7.
2010: Marija Mentinova; Harsha Gunawardena
Covalent modification of gaseous peptide ions with N-hydroxysuccinimide ester reagent ions.
Journal of the American Chemical Society 2010;132(51):18248-57.
2010: Teng-Yi Huang; Jian Liu; Harsha Gunawardena
Top-down tandem mass spectrometry of tRNA via ion trap collision-induced dissociation.
Journal of the American Society for Mass Spectrometry 2010;21(6):890-8.
2009: Kerry M Hassell; Yves LeBlanc; Harsha Gunawardena
Conversion of multiple analyte cation types to a single analyte anion type via ion/ion charge inversion.
The Analyst 2009;134(11):2262-6.
2009: Hongling Han; Harsha Gunawardena
Selective covalent bond formation in polypeptide ions via gas-phase ion/ion reaction chemistry.
Journal of the American Chemical Society 2009;131(36):12884-5.
2009: Marija Mentinova; Hongling Han; Harsha Gunawardena
Dissociation of disulfide-intact somatostatin ions: the roles of ion type and dissociation method.
Rapid communications in mass spectrometry : RCM 2009;23(17):2647-55.
2009: David M Crizer; Yu Xia; Harsha Gunawardena
Transition metal complex cations as reagents for gas-phase transformation of multiply deprotonated polypeptides.
Journal of the American Society for Mass Spectrometry 2009;20(9):1718-22.
2009: David M Crizer; Harsha Gunawardena
Electron transfer dissociation of amide nitrogen methylated polypeptide cations.
Journal of the American Society for Mass Spectrometry 2009;20(7):1349-54.
2009: Hongling Han; Frank A Londry; David E Erickson; Harsha Gunawardena
Tailored-waveform collisional activation of peptide ion electron transfer survivor ions in cation transmission mode ion/ion reaction experiments.
The Analyst 2009;134(4):681-9.
2009: Jian Liu; Teng-Yi Huang; Harsha Gunawardena
Simultaneous transmission mode collision-induced dissociation and ion/ion reactions for top-down protein identification/characterization using a quadrupole/time-of-flight tandem mass spectrometer.
Analytical chemistry 2009;81(6):2159-67.
2009: Jian Liu; Teng-Yi Huang; Harsha Gunawardena
Top-down protein identification/characterization of a priori unknown proteins via ion trap collision-induced dissociation and ion/ion reactions in a quadrupole/time-of-flight tandem mass spectrometer.
Analytical chemistry 2009;81(4):1433-41.
2009: Joshua F Emory; Kerry H Hassell; Frank A Londry; Harsha Gunawardena
Transmission mode ion/ion reactions in the radiofrequency-only ion guide of hybrid tandem mass spectrometers.
Rapid communications in mass spectrometry : RCM 2009;23(3):409-18.
2009: Joshua F Emory; Harsha Gunawardena
The role of amino acid composition in the charge inversion of deprotonated peptides via gas-phase ion/ion reactions.
Journal of the American Society for Mass Spectrometry 2009;20(2):180-7.
2008: Teng-Yi Huang; Anastasia Kharlamova; Jian Liu; Harsha Gunawardena
Ion trap collision-induced dissociation of multiply deprotonated RNA: c/y-ions versus (a-B)/w-ions.
Journal of the American Society for Mass Spectrometry 2008;19(12):1832-40.
2008: Hongling Han; Darryl J Pappin; Philip L Ross; Harsha Gunawardena
Electron transfer dissociation of iTRAQ labeled peptide ions.
Journal of proteome research 2008;7(9):3643-8.
2008: Hongling Han; Yu Xia; Min Yang; Harsha Gunawardena
Rapidly alternating transmission mode electron-transfer dissociation and collisional activation for the characterization of polypeptide ions.
Analytical chemistry 2008;80(9):3492-7.
2008: Nicolas J Hauser; Hongling Han; Harsha Gunawardena; Franco Basile
Electron transfer dissociation of peptides generated by microwave D-cleavage digestion of proteins.
Journal of proteome research 2008;7(5):1867-72.
2008: Yu Xia; Hongling Han; Harsha Gunawardena
Activation of intact electron-transfer products of polypeptides and proteins in cation transmission mode ion/ion reactions.
Analytical chemistry 2008;80(4):1111-7.
2008: Yu Xia; Harsha Gunawardena
Evolution of instrumentation for the study of gas-phase ion/ion chemistry via mass spectrometry.
Journal of the American Society for Mass Spectrometry 2008;19(2):173-89.
2008: Christopher K Barlow; Brittany D M Hodges; Yu Xia; Richard A J O'Hair; Harsha Gunawardena
Gas-phase ion/ion reactions of transition metal complex cations with multiply charged oligodeoxynucleotide anions.
Journal of the American Society for Mass Spectrometry 2008;19(2):281-93.
2008: Jian Liu; Xiaorong Liang; Harsha Gunawardena
On the value of knowing a z* ion for what it is.
Journal of proteome research 2008;7(1):130-7.
2008: Jeremiah J Bowers; Jian Liu; Harsha Gunawardena; Scott A McLuckey
Protein identification via ion-trap collision-induced dissociation and examination of low-mass product ions.
Journal of mass spectrometry : JMS 2008;43(1):23-34.
2007: Yu Xia; Bruce A Thomson; Harsha Gunawardena
Bidirectional ion transfer between quadrupole arrays: MSn ion/ion reaction experiments on a quadrupole/time-of-flight tandem mass spectrometer.
Analytical chemistry 2007;79(21):8199-206.
2007: Yu Xia; Harsha Gunawardena; David E Erickson; Scott A McLuckey
Effects of cation charge-site identity and position on electron-transfer dissociation of polypeptide cations.
Journal of the American Chemical Society 2007;129(40):12232-43.
2007: Xiaorong Liang; Jian Liu; Yves LeBlanc; Tom Covey; A Celeste Ptak; J Thomas Brenna; Harsha Gunawardena
Electron transfer dissociation of doubly sodiated glycerophosphocholine lipids.
Journal of the American Society for Mass Spectrometry 2007;18(10):1783-8.
2007: Hongling Han; Yu Xia; Harsha Gunawardena
Ion trap collisional activation of c and z* ions formed via gas-phase ion/ion electron-transfer dissociation.
Journal of proteome research 2007;6(8):3062-9.
2007: Xiaorong Liang; James W Hager; Harsha Gunawardena
Transmission mode ion/ion electron-transfer dissociation in a linear ion trap.
Analytical chemistry 2007;79(9):3363-70.
2007: Xiaorong Liang; Harsha Gunawardena
Transmission mode ion/ion proton transfer reactions in a linear ion trap.
Journal of the American Society for Mass Spectrometry 2007;18(5):882-90.
2007: Xiaorong Liang; Hongling Han; Yu Xia; Harsha Gunawardena
A pulsed triple ionization source for sequential ion/ion reactions in an electrodynamic ion trap.
Journal of the American Society for Mass Spectrometry 2007;18(3):369-76.
2007: Jian Liu; Paul A Chrisman; David E Erickson; Harsha Gunawardena
Relative information content and top-down proteomics by mass spectrometry: utility of ion/ion proton-transfer reactions in electrospray-based approaches.
Analytical chemistry 2007;79(3):1073-81.
2007: Hongling Han; Yu Xia; Harsha Gunawardena
Beam-type collisional activation of polypeptide cations that survive ion/ion electron transfer.
Rapid communications in mass spectrometry : RCM 2007;21(10):1567-73.
2006: Teng-Yi Huang; Joshua F Emory; Richard A J O'Hair; Harsha Gunawardena
Electron-transfer reagent anion formation via electrospray ionization and collision-induced dissociation.
Analytical chemistry 2006;78(21):7387-91.
2006: Yu Xia; Paul A Chrisman; Sharon J Pitteri; David E Erickson; Harsha Gunawardena
Ion/molecule reactions of cation radicals formed from protonated polypeptides via gas-phase ion/ion electron transfer.
Journal of the American Chemical Society 2006;128(36):11792-8.
2006: Harsha Gunawardena; Richard A J O'Hair; Scott A McLuckey
Selective disulfide bond cleavage in gold(I) cationized polypeptide ions formed via gas-phase ion/ion cation switching.
Journal of proteome research 2006;5(9):2087-92.
2006: Tegafaw T Mekecha; Ravi Amunugama; Harsha Gunawardena
Ion trap collision-induced dissociation of human hemoglobin alpha-chain cations.
Journal of the American Society for Mass Spectrometry 2006;17(7):923-31.
2006: Yu Xia; Paul A Chrisman; David E Erickson; Jian Liu; Xiaorong Liang; Frank A Londry; Min J Yang; Harsha Gunawardena
Implementation of ion/ion reactions in a quadrupole/time-of-flight tandem mass spectrometer.
Analytical chemistry 2006;78(12):4146-54.
2006: Harsha Gunawardena; Joshua F Emory; Scott A McLuckey
Phosphopeptide anion characterization via sequential charge inversion and electron-transfer dissociation.
Analytical chemistry 2006;78(11):3788-93.
2006: Xiaorong Liang; Yu Xia; Harsha Gunawardena
Alternately pulsed nanoelectrospray ionization/atmospheric pressure chemical ionization for ion/ion reactions in an electrodynamic ion trap.
Analytical chemistry 2006;78(9):3208-12.
2006: Yu Xia; Xiaorong Liang; Harsha Gunawardena
Ion trap versus low-energy beam-type collision-induced dissociation of protonated ubiquitin ions.
Analytical chemistry 2006;78(4):1218-27.
2006: Paul A Chrisman; Sharon J Pitteri; Harsha Gunawardena
Parallel ion parking of protein mixtures.
Analytical chemistry 2006;78(1):310-6.
2006: Peter B O'Connor; Jason J Cournoyer; Sharon J Pitteri; Paul A Chrisman; Harsha Gunawardena
Differentiation of aspartic and isoaspartic acids using electron transfer dissociation.
Journal of the American Society for Mass Spectrometry 2006;17(1):15-9.
2005: Yu Xia; Xiaorong Liang; Harsha Gunawardena
Pulsed dual electrospray ionization for ion/ion reactions.
Journal of the American Society for Mass Spectrometry 2005;16(11):1750-6.
2005: Sharon J Pitteri; Harsha Gunawardena
Recent developments in the ion/ion chemistry of high-mass multiply charged ions.
Mass spectrometry reviews 2005;24(6):931-58.
2005: Harsha Gunawardena; Min He; Paul A Chrisman; Sharon J Pitteri; Jason M Hogan; Brittany D M Hodges; Scott A McLuckey
Electron transfer versus proton transfer in gas-phase ion/ion reactions of polyprotonated peptides.
Journal of the American Chemical Society 2005;127(36):12627-39.
2005: Sharon J Pitteri; Paul A Chrisman; Harsha Gunawardena
Electron-transfer ion/ion reactions of doubly protonated peptides: effect of elevated bath gas temperature.
Analytical chemistry 2005;77(17):5662-9.
2005: Paul A Chrisman; Sharon J Pitteri; Jason M Hogan; Harsha Gunawardena
SO2-* electron transfer ion/ion reactions with disulfide linked polypeptide ions.
Journal of the American Society for Mass Spectrometry 2005;16(7):1020-30.
2005: Yu Xia; Xiaorong Liang; Harsha Gunawardena
Sonic spray as a dual polarity ion source for ion/ion reactions.
Analytical chemistry 2005;77(11):3683-9.
2005: Paul A Chrisman; Sharon J Pitteri; Harsha Gunawardena
Parallel ion parking: improving conversion of parents to first-generation products in electron transfer dissociation.
Analytical chemistry 2005;77(10):3411-4.
2005: Min He; Joshua F Emory; Harsha Gunawardena
Reagent anions for charge inversion of polypeptide/protein cations in the gas phase.
Analytical chemistry 2005;77(10):3173-82.
2005: Kelly A Newton; Ravi Amunugama; Harsha Gunawardena
Gas-phase ion/ion reactions of multiply protonated polypeptides with metal containing anions.
The journal of physical chemistry. A 2005;109(16):3608-16.
2005: Fang Yan; Min He; Jason M Hogan; Sandra S Rossie; Harsha Gunawardena
Targeted biomarker detection via whole protein ion trap tandem mass spectrometry: thymosin beta4 in a human lung cancer cell line.
Journal of mass spectrometry : JMS 2005;40(4):444-51.
2005: Sharon J Pitteri; Paul A Chrisman; Jason M Hogan; Harsha Gunawardena
Electron transfer ion/ion reactions in a three-dimensional quadrupole ion trap: reactions of doubly and triply protonated peptides with SO2*-.
Analytical chemistry 2005;77(6):1831-9.
2005: Jason M Hogan; Sharon J Pitteri; Paul A Chrisman; Harsha Gunawardena
Complementary structural information from a tryptic N-linked glycopeptide via electron transfer ion/ion reactions and collision-induced dissociation.
Journal of proteome research 2005;4(2):628-32.
2005: J Mitchell Wells; Harsha Gunawardena
Collision-induced dissociation (CID) of peptides and proteins.
Methods in enzymology 2005;402():148-85.
2005: Yu Xia; Jin Wu; Harsha Gunawardena; Frank A Londry; James W Hager
Mutual storage mode ion/ion reactions in a hybrid linear ion trap.
Journal of the American Society for Mass Spectrometry 2005;16(1):71-81.
2004: Kelly A Newton; Sharon J Pitteri; Michael Laskowski; Harsha Gunawardena
Effects of single amino acid substitution on the collision-induced dissociation of intact protein ions: Turkey ovomucoid third domain.
Journal of proteome research 2004;3(5):1033-41.
2004: Jin Wu; James W Hager; Yu Xia; Frank A Londry; Harsha Gunawardena
Positive ion transmission mode ion/ion reactions in a hybrid linear ion trap.
Analytical chemistry 2004;76(17):5006-15.
2004: Min He; Harsha Gunawardena
Increasing the negative charge of a macroanion in the gas phase via sequential charge inversion reactions.
Analytical chemistry 2004;76(14):4189-92.
2004: Harsha Gunawardena; Scott A McLuckey
Synthesis of multi-unit protein hetero-complexes in the gas phase via ion-ion chemistry.
Journal of mass spectrometry : JMS 2004;39(6):630-8.
2004: Kelly A Newton; Harsha Gunawardena
Generation and manipulation of sodium cationized peptides in the gas phase.
Journal of the American Society for Mass Spectrometry 2004;15(4):607-15.
2004: Peng Pan; Harsha Gunawardena; Yu Xia; Scott A McLuckey
Nanoelectrospray ionization of protein mixtures: solution pH and protein pI.
Analytical chemistry 2004;76(4):1165-74.
2004: Ravi Amunugama; Jason M Hogan; Kelly A Newton; Harsha Gunawardena
Whole protein dissociation in a quadrupole ion trap: identification of an a priori unknown modified protein.
Analytical chemistry 2004;76(3):720-7.
2004: Min He; Harsha Gunawardena
Tandem mass spectrometry of half-generation PAMAM dendrimer anions.
Rapid communications in mass spectrometry : RCM 2004;18(9):960-72.
2004: Sharon J Pitteri; Gavin E Reid; Harsha Gunawardena
Affecting proton mobility in activated peptide and whole protein ions via lysine guanidination.
Journal of proteome research 2004;3(1):46-54.
2003: Jason M Hogan; Sharon J Pitteri; Harsha Gunawardena
Phosphorylation site identification via ion trap tandem mass spectrometry of whole protein and peptide ions: bovine alpha-crystallin A chain.
Analytical chemistry 2003;75(23):6509-16.
2003: Peng Pan; Harsha Gunawardena
The effect of small cations on the positive electrospray responses of proteins at low pH.
Analytical chemistry 2003;75(20):5468-74.
2003: Kelly A Newton; Harsha Gunawardena
Gas-phase peptide/protein cationizing agent switching via ion/ion reactions.
Journal of the American Chemical Society 2003;125(41):12404-5.
2003: Min He; Harsha Gunawardena
Two ion/ion charge inversion steps to form a doubly protonated peptide from a singly protonated peptide in the gas phase.
Journal of the American Chemical Society 2003;125(26):7756-7.
2003: J Mitchell Wells; Paul A Chrisman; Harsha Gunawardena
Formation and characterization of protein-protein complexes in vacuo.
Journal of the American Chemical Society 2003;125(24):7238-49.
2003: Peng Pan; Harsha Gunawardena
Electrospray ionization of protein mixtures at low pH.
Analytical chemistry 2003;75(6):1491-9.
2003: Jason M Hogan; Harsha Gunawardena
Charge state dependent collision-induced dissociation of native and reduced porcine elastase.
Journal of mass spectrometry : JMS 2003;38(3):245-56.
2002: Ethan R Badman; Paul A Chrisman; Harsha Gunawardena
A quadrupole ion trap mass spectrometer with three independent ion sources for the study of gas-phase ion/ion reactions.
Analytical chemistry 2002;74(24):6237-43.
2002: Paul A Chrisman; Harsha Gunawardena
Dissociations of disulfide-linked gaseous polypeptide/protein anions: ion chemistry with implications for protein identification and characterization.
Journal of proteome research 2002;1(6):549-57.
2002: Min He; Gavin E Reid; Hao Shang; Gil U Lee; Harsha Gunawardena
Dissociation of multiple protein ion charge states following a single gas-phase purification and concentration procedure.
Analytical chemistry 2002;74(18):4653-61.
2002: Gavin E Reid; Harsha Gunawardena
'Top down' protein characterization via tandem mass spectrometry.
Journal of mass spectrometry : JMS 2002;37(7):663-75.
2002: Gavin E Reid; Hao Shang; Jason M Hogan; Gil U Lee; Harsha Gunawardena
Gas-phase concentration, purification, and identification of whole proteins from complex mixtures.
Journal of the American Chemical Society 2002;124(25):7353-62.
2002: J Mitchell Wells; Paul A Chrisman; Harsha Gunawardena
"Dueling" ESI: instrumentation to study ion/ion reactions of electrospray-generated cations and anions.
Journal of the American Society for Mass Spectrometry 2002;13(6):614-22.
2002: Harsha Gunawardena; Jin Wu; Jonathan Bundy; James L Stephenson; Gregory B Hurst
Oligonucleotide mixture analysis via electrospray and ion/ion reactions in a quadrupole ion trap.
Analytical chemistry 2002;74(5):976-84.
2002: James L Stephenson; Harsha Gunawardena; Gavin E Reid; J Mitchell Wells; Jonathan Bundy
Ion/ion chemistry as a top-down approach for protein analysis.
Current opinion in biotechnology 2002;13(1):57-64.
2002: Gavin E Reid; James L Stephenson; Harsha Gunawardena
Tandem mass spectrometry of ribonuclease A and B: N-linked glycosylation site analysis of whole protein ions.
Analytical chemistry 2002;74(3):577-83.
2002: Harsha Gunawardena; Gavin E Reid; J Mitchell Wells
Ion parking during ion/ion reactions in electrodynamic ion traps.
Analytical chemistry 2002;74(2):336-46.
2001: J Mitchell Wells; Paul A Chrisman; Harsha Gunawardena
Formation of protein-protein complexes in vacuo.
Journal of the American Chemical Society 2001;123(49):12428-9.
2001: Gavin E Reid; Jin Wu; Paul A Chrisman; J Mitchell Wells; Harsha Gunawardena
Charge-state-dependent sequence analysis of protonated ubiquitin ions via ion trap tandem mass spectrometry.
Analytical chemistry 2001;73(14):3274-81.
2001: J Mitchell Wells; Gavin E Reid; B J Engel; Peng Pan; Harsha Gunawardena
Dissociation reactions of gaseous ferro-, ferri-, and apo-cytochrome c ions.
Journal of the American Society for Mass Spectrometry 2001;12(7):873-6.
2001: Benjamin J Cargile; Harsha Gunawardena; James L Stephenson
Identification of bacteriophage MS2 coat protein from E. coli lysates via ion trap collisional activation of intact protein ions.
Analytical chemistry 2001;73(6):1277-85.
2001: Paul A Chrisman; Kelly A Newton; Gavin E Reid; J Mitchell Wells; Harsha Gunawardena
Loss of charged versus neutral heme from gaseous holomyoglobin ions.
Rapid communications in mass spectrometry : RCM 2001;15(23):2334-40.
2000: Douglas C Duckworth; Douglas E Goeringer; Harsha Gunawardena
Measurement of collision-induced dissociation rates for tantalum oxide ions in a quadrupole ion trap.
Journal of the American Society for Mass Spectrometry 2000;11(12):1072-8.
2000: T Gregory Schaaff; Benjamin J Cargile; James L Stephenson; Harsha Gunawardena
Ion trap collisional activation of the (M + 2H)2+ - (M + 17H)17+ ions of human hemoglobin beta-chain.
Analytical chemistry 2000;72(5):899-907.
2000: T Gregory Schaaff; James L Stephenson; Harsha Gunawardena
Gas phase H/D exchange kinetics: DI versus D2O.
Journal of the American Society for Mass Spectrometry 2000;11(2):167-71.
1999: James L Stephenson; T Gregory Schaaff; Harsha Gunawardena
Hydroiodic acid attachment kinetics as a chemical probe of gaseous protein ion structure: bovine pancreatic trypsin inhibitor.
Journal of the American Society for Mass Spectrometry 1999;10(6):552-6.
1999: James L Stephenson; Benjamin J Cargile; Harsha Gunawardena
Ion trap collisional activation of disulfide linkage intact and reduced multiply protonated polypeptides.
Rapid communications in mass spectrometry : RCM 1999;13(20):2040-8.
1998: Harsha Gunawardena; James L Stephenson
Ion/ion chemistry of high-mass multiply charged ions.
Mass spectrometry reviews 1998;17(6):369-407.
1998: James L Stephenson; Harsha Gunawardena
Simplification of product ion spectra derived from multiply charged parent ions via ion/ion chemistry.
Analytical chemistry 1998;70(17):3533-44.
1998: James L Stephenson; Harsha Gunawardena
Charge manipulation for improved mass determination of high-mass species and mixture components by electrospray mass spectrometry.
Journal of mass spectrometry : JMS 1998;33(7):664-72.
1998: James L Stephenson; Harsha Gunawardena
Ion/ion reactions for oligopeptide mixture analysis: application to mixtures comprised of 0.5-100 kDa components.
Journal of the American Society for Mass Spectrometry 1998;9(6):585-96.
1998: Harsha Gunawardena; James L Stephenson; Keiji G Asano
Ion/ion proton-transfer kinetics: implications for analysis of ions derived from electrospray of protein mixtures.
Analytical chemistry 1998;70(6):1198-202.
1997: James L Stephenson; Harsha Gunawardena
Counting basic sites in oligopeptides via gas-phase ion chemistry.
Analytical chemistry 1997;69(3):281-5.
1997: James L Stephenson; Harsha Gunawardena
Charge reduction of oligonucleotide anions via gas-phase electron transfer to xenon cations.
Rapid communications in mass spectrometry : RCM 1997;11(8):875-80.
1996: James L Stephenson; Harsha Gunawardena
Ion/ion proton transfer reactions for protein mixture analysis.
Analytical chemistry 1996;68(22):4026-32.
1996: Harsha Gunawardena; W J Herron; James L Stephenson; D E Goeringer
Cation attachment to multiply charged anions of oxidized bovine insulin A-chain.
Journal of mass spectrometry : JMS 1996;31(10):1093-100.
1996: W J Herron; D E Goeringer; Harsha Gunawardena
Product ion charge state determination via ion/ion proton transfer reactions.
Analytical chemistry 1996;68(2):257-62.
1995: Mitchel J Doktycz; Gregory B Hurst; S Habibi-Goudarzi; Harsha Gunawardena; K Tang; Chung-Hsuan Chen; M Uziel; K B Jacobson; R P Woychik; Michelle V Buchanan
Analysis of polymerase chain reaction-amplified DNA products by mass spectrometry using matrix-assisted laser desorption and electrospray: current status.
Analytical biochemistry 1995;230(2):205-14.
1995: Harsha Gunawardena; D E Goeringer
Ion/molecule reactions for improved effective mass resolution in electrospray mass spectrometry.
Analytical chemistry 1995;67(14):2493-7.
1994: Mitchel J Doktycz; S Habibi-Goudarzi; Harsha Gunawardena
Accumulation and storage of ionized duplex DNA molecules in a quadrupole ion trap.
Analytical chemistry 1994;66(20):3416-22.
1994: Harsha Gunawardena; G J Van Berkel; D E Goeringer; G L Glish
Ion trap mass spectrometry. Using high-pressure ionization.
Analytical chemistry 1994;66(14):737A-743A.
1993: R S Ramsey; D E Goeringer; Harsha Gunawardena
Active chemical background and noise reduction in capillary electrophoresis/ion trap mass spectrometry.
Analytical chemistry 1993;65(23):3521-4.
1992: Harsha Gunawardena; D E Goeringer; G L Glish
Collisional activation with random noise in ion trap mass spectrometry.
Analytical chemistry 1992;64(13):1455-60.
1991: K B Jacobson; H F Arlinghaus; Michelle V Buchanan; Chung-Hsuan Chen; G L Glish; R L Hettich; Harsha Gunawardena
Applications of mass spectrometry to DNA sequencing.
Genetic analysis, techniques and applications 1991;8(8):223-9.
1991: Harsha Gunawardena; G L Glish; G J Van Berkel
Charge determination of product ions formed from collision-induced dissociation of multiply protonated molecules via ion/molecule reactions.
Analytical chemistry 1991;63(18):1971-8.