Publications

  1. Youssef, M. M.; Szot, C. W.; Ayad, M. F.; Hussein, L. A; Abdel-Ghany, M. F.; Bailey, R. C.; Mostafa, A. M.; Håkansson, K.* Mass Spectrometry and Enzyme Assays Refute Histone Tyrosine Sulfation. Nat. Chem Biol. 2025, 21, 1667-1670.
  2. DeFiglia, S. A.; Lee, T.; Mikawy, N. N.; Szot, C. W.; Håkansson, K.* Extraction Anode Lens Effects in Gas Phase Peptide Cation-Electron Reactions. Int. J. Mass Spectrom. 2025, 509, 117390 (invited, special issue in honor of Richard A. J. O’Hair).

    98.   Zhao, C. Y.; Borotto, N. B.; Schmidt, J.; Srivastava, K.; Lowell, A.; Håkansson, K.; Sherman, D. H.;      Ruotolo, B. T.* Gas-Phase Unfolding Reveals Stability Shifts Associated with Substrate Binding in           Modular Polyketide Synthases. J. Am. Soc. Mass Spectrom. 2025, 36, 241−246.

  1. Mikawy, N. N.; Rojas Ramirez, C.; DeFiglia, S. A.; Szot, C. W.; Le, J.; Lantz, C.; Wei, B.; Zenaidee, M. A.; Blakney, G. T.; Nesvizhskii, A. I.; Ruotolo, B. T.; Loo, J. A.; Shabanowitz, J.; Anderson, L. C.; Håkansson, K.* Are Internal Fragments Observable in Electron-Based Top-Down Mass Spectrometry? Mol. Cell Proteomics 2024, 23, 100814 (invited, special issue in honor of Donald F. Hunt).
  2. Youssef, M. M.; Szot, C. W.; Collier, L. M.; Kweon, H. K.; DeFiglia, S. A.; Ayad, M. F.; Hussein, L. A; Abdel-Ghany, M. F.; Håkansson, K.* Electron Capture vs. Transfer Dissociation for Site Determination of Tryptic Peptide Tyrosine Sulfation and Identification of an Unexpected Posttranslational Modification. J. Proteome Res. 2024, 23, 2386-2396.
  3. DeFiglia, S. A.; Szot, C. W.; Håkansson, K.* Negative-Ion Electron Capture Dissociation of MALDI-Generated Peptide Anions. Anal. Chem. 2024, 96, 8800-8806.
  4. Wang, N.; Dixit, S. M.; Lee, T.; DeFiglia, S. A.; Ruotolo, B. T.; Håkansson, K.* Salt-Bridged Peptide Anion Gaseous Structures Enable Efficient Negative Ion Electron Capture Dissociation. J. Am. Soc. Mass Spectrom. 2024, 35, 784-792 .
  5. Kweon, H. K.; Kong, A. T.; Hersberger, K. E.; Huang, S.; Nesvizhskii, A. I.; Wang, Y.*; Håkansson, K.*; Andrews, P. C.* Sulfoproteomics Workflow with Precursor Ion Accurate Mass Shift Analysis Reveals Novel Tyrosine Sulfoproteins in the Golgi. J. Proteome Res. 2024, 23, 71-83.
  6. Wang, Q; Borotto, N. B.; Håkansson, K.* Gas-Phase Hydrogen/Deuterium Scrambling in Negative-Ion Mode Tandem Mass Spectrometry J. Am. Soc. Mass Spectrom. 2019, 30, 855-863.
  7. Borotto, N. B.; Ileka, K. M.; Tom, C. M. B. T.; Martin, B. R.*; Håkansson, K.* Free Radical Initiated Peptide Sequencing for Direct Site Localization of Sulfation and Phosphorylation with Negative Ion Mode Mass Spectrometry. Anal. Chem. 2018, 90, 9682-9686.
  8. McClory, P. J.; Håkansson, K.* Corona Discharge Suppression in Negative Ion Mode Nanoelectrospray Ionization via Trifluoroethanol Addition. Anal. Chem. 2017, 89, 10188-10193.
  9. Borotto, N. B.; McClory, P. J.; Martin, B. R.*; Håkansson, K.* Targeted Annotation of S-Sulfonylated Peptides by Selective Infrared Multiphoton Dissociation Mass Spectrometry. Anal. Chem. 2017, 89, 8304-8310.
  10. Khare, D.; Hale, W. A.; Tripathi, A.; Gu, L.; Sherman, D. H.; Gerwick, W. H.; Håkansson, K.; Smith, J. L.* Structural Basis for Cyclopropanation by a Unique Enoyl-Acyl Carrier Protein Reductase. Structure, 2015, 23, 2213-2223.
  11. Whicher, J. R.; Dutta, S.; Hansen, D. A.; Hale, W. A.; Chemler, J. A.; Narayan, A. R.; Håkansson, K.*; Sherman, D. H.*; Smith, J. L.*; Skiniotis, G.* Structural Rearrangements of a Polyketide Synthase Module during its Catalytic Cycle. Nature, 2014, 510, 560–564.
  12. Dutta, S.; Whicher, J. R.; Hansen, D. A.; Hale, W. A.; Chemler, J. A.; Narayan, A. R.; Håkansson, K.; Sherman, D. H.; Smith, J. L.; Skiniotis, G.* Structure of a Modular Polyketide Synthase. Nature, 2014, 510, 512–517.
  13. Zhou, W.; Håkansson, K.* Electron Capture Dissociation of Divalent Metal-adducted Sulfated N-Glycans Released from Bovine Thyroid Stimulating Hormone. J. Am. Soc. Mass Spectrom. 2013, 24, 1798-1806.
  14. Kornacki, J. R. (undergraduate author); Adamson, J. T.; Håkansson, K.* Electron Detachment Dissociation of Underivatized Chloride-Adducted Oligosaccharides. J. Am. Soc. Mass Spectrom. 2012, 23, 2031-2042.
  15. Yoo, H. J.*; Håkansson, K. Phosphate-Containing Metabolite Enrichment with TiO2 Micro-tips. Bull. Kor. Chem. Soc. 2012, 33, 2475-2476.
  16. Hersberger, K. E.; Håkansson, K.* Characterization of O-sulfopeptides by Negative Ion Mode Tandem Mass Spectrometry: Superior Performance of Negative-Ion Electron Capture Dissociation. Anal. Chem. 2012, 84, 6370-6377 (accelerated article).
  17. Song, H.; Håkansson, K.* Electron Detachment Dissociation and Negative Ion Infrared Multiphoton Dissociation of Electrosprayed Intact Proteins. Anal. Chem. 2012, 84, 871–876.
  18. Zhou, W.; Håkansson, K.* Electron Detachment Dissociation of Fluorescently Labeled Sialylated Oligosaccharides. Electrophoresis 2011, 32, 3526-3535 (invited, special issue on Glycomics and Glycoproteomics).
  19. Yoo, H. J.; Wang, N.; Zhuang, S. (undergraduate author); Song, H.; Håkansson, K.* Negative Ion Electron Capture Dissociation: Radical-Driven Fragmentation of Charge-Increased Gaseous Peptide Anions. J. Am. Chem. Soc. 2011, 133, 16790–16793.
  20. Rath, C. M.; Janto, B.; Earl, J.; Ahmed, A.; Hu, F. Z.; Hiller, L.; Dahlgren, M.; Kreft, R.; Yu, F.; Wolff, J. J.; Kweon, H. K.; Christiansen, M. A.; Håkansson, K.; Williams, R.; Ehrlich, G.; Sherman, D. H.* Meta-omic Characterization of the Marine Invertebrate Microbial Consortium that Produces the Chemotherapeutic Natural product ET-743. ACS Chem. Biol. 2011, 6, 1244-1256.
  21. Zhou, W.; Håkansson, K.* Structural Determination of Carbohydrates by Fourier Transform Tandem Mass Spectrometry. Curr. Proteomics 2011, 8, 297-308.
  22. Kalli, A.; Grigorean, G.; Håkansson, K.* Electron Induced Dissociation of Singly Deprotonated Peptides. J. Am. Soc. Mass Spectrom. 2011, 22, 2209-2221.
  23. Ding, Y.; Rath, C. M.; Bolduc, K. L.; Håkansson, K.; Sherman, D. H.* Chemoenzymatic Synthesis of Cryptophycin Anticancer Agents by an Ester Bond Forming Nonribosomal Peptide Synthetase Module. J. Am. Chem. Soc. 2011, 133, 14492–14495.
  24. Bonnett, S. A.; Rath, C. M.; Shareef, R.; Joels, J. R.; Chemler, J.; Håkansson, K; Reynolds, K.; Sherman, D. H.* Acyl-CoA Subunit Selectivity in the Terminal Pikromycin Polyketide Synthase Module: Steady-State Kinetics and Active-Site Occupancy Analysis by FTICR-MS. Chem. Biol. 2011, 18, 1075-1081.
  25. Liu H. C.; Håkansson, K.* Electron Capture Dissociation of Divalent Metal-Adducted Sulfated Oligosaccharides. Int. J. Mass Spectrom. 2011, 305, 170–177 (invited, special issue honoring Catherine E. Costello).
  26. 72. Yoo, J.; Håkansson, K.* Determination of Phospholipid Regiochemistry by Ag(I) Adduction and Tandem Mass Spectrometry. Anal. Chem. 2011, 83, 1275-1283.
  27. Håkansson, K.*; Klassen, J. S.* Ion Activation Methods for Tandem Mass Spectrometry. In Electrospray and MALDI Mass Spectrometry: Fundamentals, Instrumentation, Practicalities, and Biological Applications; Cole, R. B. Ed.; John Wiley & Sons: New York, 2010; pp 571-630.
  28. Buchholz, T. J.; Rath, C. M.; Lopanik, N. B.; Gardner, N. P.; Håkansson, K.; Sherman, D. H.* Polyketide -Branching in Bryostatin Biosynthesis: Identification of Surrogate Acetyl-ACP Donors for BryR, an HMG-ACP Synthase. Chem. Biol. 2010, 17, 1092-1100.
  29. Khare, D.; Wang, B.; Gu, L.; Razelun, J.; Sherman, D. H.; Gerwick, W. H.; Håkansson K.; Smith, J. L.* Crystal Structure of the Halogenase Domain in Curacin A Biosynthesis: Conformational Switch Triggered by α-Ketoglutarate. Proc. Natl. Acad. Sci. U.S.A. 2010, 107, 14099-14104.
  30. Yoo, H. J.; Håkansson, K.* Determination of Double Bond Location in Fatty Acids by Manganese Adduction and Electron Induced Dissociation. Anal. Chem. 2010, 82, 6940–6946.
  31. Kalli, A.; Håkansson, K.* Electron Capture Dissociation of Highly Charged Proteolytic Peptides from Lys N, Lys C and Glu C Digestion. Mol. Biosyst. 2010, 6, 1668-1681 (invited, special issue on Emerging Investigators).
  32. Yoon, M.; Song, H.; Håkansson, K.; Marsh, E. N. G.* Hydrogen Tunneling in Adenosylcobalamin-Dependent Glutamate Mutase: Evidence from Intrinsic Kinetic Isotope Effects Measured by Intra-molecular Competition. Biochemistry, 2010, 49, 3168-3173.
  33. Matson, J. S.; Yoo, H. J.; Håkansson, K.; DiRita, V. J.* Polymyxin B Resistance in El Tor Vibrio cholerae Requires Lipid Acylation Catalyzed by MsbB. J. Bacteriol. 2010, 192, 2044-2052.
  34. Yang, J.; Håkansson, K.* Tandem Mass Spectrometry of Nucleic Acids. In Mass Spectrometry of Nucleosides and Nucleic Acids; Banoub, J. H.; Limbach, P. A. Eds.; CRC Press: Boca Raton, 2009; pp 95-116.
  35. Gu, L.; Wang, B.; Kulkarni, A.; Gehret, J. J.; Lloyd, K.; Gerwick, L.; Gerwick, W. H.; Wipf, P.; Håkansson, K.; Smith, J. L.; Sherman, D. H.* Polyketide Decarboxylative Chain Termination Preceded by O-Sulfonation in Curacin A Biosynthesis. J. Am. Chem. Soc. 2009, 131, 16033-16035.
  36. Majmudar, C. Y.; Wang, B.; Lum, J. K.; Håkansson, K.*; Mapp, A. K.* A High Resolution Interaction Map of Three Transcriptional Activation Domains with an Essential Co-activator from Photo Cross-Linking and Multiplexed Mass Spectrometry. Angew. Chem. Int. Ed. 2009, 48, 7021-7024 (selected as VIP).
  37. Gu, L.; Wang, B.; Kulkarni, A.; Geders, T. W.; Grindberg, R. V.; Gerwick, L. G.; Håkansson, K.; Wipf, P.; Smith, J. L.; Gerwick, W. H.; Sherman, D. H.* Metamorphic Enzyme Assembly in Polyketide Diversification. Nature 2009, 459, 731-735.
  38. Yang, J.; Håkansson, K.* Characterization of Oligodeoxynucleotide Fragmentation Pathways in Infrared Multiphoton Dissociation and Electron Detachment Dissociation by Fourier Transform Ion Cyclotron Double Resonance. Eur. J. Mass Spectrom. 2009, 15, 293-304 (invited, special issue honoring Peter J. Derrick).
  39. Mo, J. J.; Todd, G. C.; Håkansson, K.* Characterization of Nucleic Acid Higher Order Structure by Gas-Phase H/D Exchange in a Quadrupole-FT-ICR Mass Spectrometer. Biopolymers 2009, 91, 256-264 (invited, special issue dedicated to advances in the investigation of nucleic acids and nucleic acid assemblies).
  40. Wilson-Stanford, S.; Kalli, A.; Håkansson, K.; Kastrantas, J.;.Orugunty, R. S.; Breukink, E.; Smith, L.* Oxidation of Lanthionines Renders the Lantibiotic Nisin Inactive. Appl. Environ. Microbiol. 2009, 75, 1381-1387.
  41. Ditzler, M. A.; Rueda, D.; Mo, J. J.; Håkansson, K.; Walter, N. G.* A Rugged Free Energy Landscape Separates Multiple Functional RNA Folds Throughout Denaturation. Nucleic Acids Res. 2008, 36, 7088-7099.
  42. Lopanik, N. B.; Shields, J. A.; Buchholz, T. J.; Rath, C. M.; Hothersall, J.; Haygood, M. G.; Håkansson, K.; Thomas, C. M.; Sherman, D. H.* In vivo and in vitro Trans-Acylation by BryP, the Putative Bryostatin Pathway Acyltransferase Derived from an Uncultured Marine Symbiont. Chem. Biol. 2008, 15, 1175-1186.
  43. Yang, J.; Håkansson, K.* Characterization and Optimization of Electron Detachment Dissociation Fourier Transform Ion Cyclotron Resonance Mass Spectrometry. Int. J. Mass Spectrom. 2008, 276, 144-148 (invited, special issue on ion-electron and ion-ion interactions).
  44. Kalli, A.; Håkansson, K.* Comparison of the Electron Capture Dissociation Fragmentation Behavior of Doubly- and Triply-protonated Peptides from Trypsin, Glu-C and Chymotrypsin Digestion. J. Proteome Res. 2008, 7, 2834-2844.
  45. Liu, H. C.; Yoo, H. J.; Håkansson, K.* Characterization of Phosphate-Containing Metabolites by Calcium Adduction and Electron Capture Dissociation. J. Am. Soc. Mass Spectrom. 2008, 19, 799-808 (invited, special issue honoring Roman A. Zubarev).
  46. Kweon H. K.; Håkansson, K.* Metal Oxide-Based Enrichment Combined with Gas-Phase Ion-Electron Reactions for Improved Mass Spectrometric Characterization of Protein Phosphorylation. J. Proteome Res. 2008, 7, 749-755.
  47. Adamson, J. T.; Håkansson, K.* Electrospray Ionization Fourier Transform Ion Cyclotron Resonance Mass Spectrometry for Lectin Analysis. In Lectins: Analytical Technologies; Nilsson, C. L. Ed.; Elsevier: Amsterdam, 2007; pp 343-371.
  48. Geders, T. W.; Gu, L.; Mowers, J. C.; Liu, H. C.; Gerwick, W. H.; Håkansson, K.; Sherman, D. H.*; Smith, J. L.* Crystal Structure of the ECH2 Catalytic Domain of CurF from Lyngbya majuscula: Insights into a Decarboxylase Involved in Polyketide Chain b-branching. J. Biol. Chem. 2007, 282, 35954–35963.
  49. Adamson, J. T.; Håkansson, K.* Electron Detachment Dissociation of Neutral and Sialylated Oligosaccharides. J. Am. Soc. Mass Spectrom. 2007, 18, 2162-2172.
  50. Goldstein, I. J.*; Winter, H. C.; Aurandt, J.; Confer, L.; Adamson, J. T.; Håkansson, K.; Remmer, H. A New a-Galactosyl-Binding Protein from the Mushroom Lyophyllum decastes. Arch. Biochem. Biophys. 2007, 467, 268–274.
  51. Gu, L.; Geders, T. W.; Wang, B.; Gerwick, W. H.; Håkansson, K.; Smith, J. L.; Sherman, D. H.* GNAT-Like Strategy for Polyketide Chain Initiation. Science 2007, 318, 970-974.
  52. Yoon, M.; Kalli, A.; Lee, H. Y.; Håkansson, K.; Marsh, E. N. G.* Intrinsic Deuterium Kinetic Isotope Effects in Glutamate Mutase Measured by an Intramolecular Competition Experiment. Angew. Chem. Int. Ed. 2007, 46, 8455-8459.
  53. Liu, H. C.; Håkansson, K.* Abundant b-Type Ions Produced in Electron Capture Dissociation of Peptides without Basic Amino Acid Residues. J. Am. Soc. Mass Spectrom. 2007, 18, 2007-2013.
  54. Mo, J. J.; Håkansson, K.* Oligonucleotide Gas-Phase Hydrogen/Deuterium Exchange with D2S in the Collision Cell of a Quadrupole-Fourier Transform Ion Cyclotron Resonance Mass Spectrometer. Anal. Chem. 2007, 79, 7893-7898.
  55. Yoo, H. J.; Liu, H. C.; Håkansson, K.* Infrared Multiphoton Dissociation and Electron-Induced Dissociation as Alternative MS/MS Strategies for Metabolite Identification. Anal. Chem. 2007, 79, 7858-7866.
  56. Liu, H. C.; Lee, J. Y; Sherman, D. H.; Håkansson, K.* Collision Activated Dissociation, Infrared Multiphoton Dissociation, and Electron Capture Dissociation of the Bacillus anthracis Siderophore Petrobactin and its Metal Ion Complexes. J. Am. Soc. Mass Spectrom. 2007, 18, 842-849.
  57. Kalli, A.; Håkansson, K.* Preferential Cleavage of S-S and C-S Bonds in Electron Detachment Dissociation and Infrared Multiphoton Dissociation of Disulfide-Linked Peptide Anions. Int. J. Mass Spectrom. 2007, 263, 71-81.
  58. Adamson, J. T.; Håkansson, K.* Electron Capture Dissociation of Oligosaccharides Ionized with Alkali, Alkaline Earth, and Transition Metals. Anal. Chem. 2007, 79, 2901-2910.
  59. Lee, J. Y.; Janes, B. K.; Passalacqua, K. D.; Pfleger, B.; Bergman, N. H.; Liu, H. C.; Håkansson, K.; Somu, R. V.; Aldrich, C. C.; Cendrowski, S.; Hanna, P.; Sherman, D. H.* Biosynthetic Analysis of the Petrobactin Siderophore Pathway from Bacillus anthracis. J. Bacteriol. 2007, 189, 1698-1710.
  60. Liu, H. C.; Håkansson, K.* Divalent Metal Ion-Peptide Interactions Probed by Electron Capture Dissociation of Trications. J. Am. Soc. Mass Spectrom. 2006, 17, 1731-1741.
  61. Liu, H. C.; Håkansson, K.* Electron Capture Dissociation of Tyrosine O-Sulfated Peptides Complexed with Divalent Metal Cations. Anal. Chem. 2006, 78, 7570-7576.
  62. Yang, J.; Håkansson, K.* Fragmentation of Oligoribonucleotides from Gas-Phase Ion-Electron Reactions. J. Am. Soc. Mass Spectrom. 2006, 17, 1369-1375 (invited, special issue honoring James A. McCloskey).
  63. Mo, J. J.; Håkansson, K.* Characterization of Nucleic Acid Higher Order Structure by Tandem High Resolution Mass Spectrometry. Anal. Bioanal. Chem. 2006, 386, 675-681 (invited, Young Investigators issue).
  64. Gu, L.; Jia, J.; Liu, H. C.; Håkansson, K.; Gerwick, W. H.; Sherman, D. H.* Metabolic Coupling of Dehydration in the Curacin A Pathway: Functional Identification of a Mechanistically Diverse Enzyme Pair. J. Am. Chem. Soc. 2006, 128, 9014-9015.
  65. Kweon, H. K.; Håkansson, K.* Selective Zirconium Dioxide-Based Enrichment of Phosphorylated Peptides for Mass Spectrometric Analysis. Anal. Chem. 2006, 78, 1743-1749 (accelerated article, featured as a 2006 Most-Cited Article for that journal, and as an ACS “hot paper” in January 2008).
  66. Adamson, J. T.; Håkansson, K.* Infrared Multiphoton Dissociation and Electron Capture Dissociation of High Mannose-Type Glycopeptides. J. Proteome Res. 2006, 5, 493-501.
  67. Kweon, H. K.; Håkansson, K.* Site-Specific Amide Hydrogen Exchange in Melittin Probed by Electron Capture Dissociation Fourier Transform Ion Cyclotron Resonance Mass Spectrometry. Analyst 2006, 131, 275-280 (invited, special issue on Emerging Investigators).
  68. Yang, J.; Mo, J. J.; Adamson, J. T.; Håkansson, K.* Characterization of Oligodeoxynucleotides by Electron Detachment Dissociation Fourier Transform Ion Cyclotron Resonance Mass Spectrometry. Anal. Chem. 2005, 77, 1876-1882.
  69. Cooper, H. J.; Håkansson, K.; Marshall, A. G.* The Role of Electron Capture Dissociation in Biomolecular Analysis. Mass Spectrom. Rev. 2005, 24, 201-222 (2005-2006 second most cited article for that journal).
  70. Schultz, K. N.; Håkansson, K.* Rapid Electron Capture Dissociation of Mass-Selectively Accumulated Oligonucleotide Dications. Int. J. Mass Spectrom. 2004, 234, 123-130.
  71. Hurd, T. W.; Fan, S.; Liu, A.; Kweon, H. K.; Håkansson, K.; Margolis, B.* Phosphorylation-dependent Binding of 14-3-3 to the Polarity Protein Par3 Regulates Cell Polarity in Mammalian Epithelia. Curr. Biol. 2003, 13, 2082-2090.

POSTDOCTORAL PUBLICATIONS

  1. Chalmers, M. J.; Håkansson, K.; Johnson, R.; Smith, R.; Shen, J.; Emmett, M. R.; Marshall, A. G. Characterization of Protein Kinase A Phosphorylation with Tandem Fourier Transform Ion Cyclotron Resonance Mass Spectrometry. Proteomics 2004, 4, 970-981.
  2. He, F.; Emmett, M. R.; Håkansson, K.; Hendrickson, C. L.; Marshall, A. G. Theoretical and Experimental Prospects for Protein Identification Based Solely on Accurate Mass Measurement. J. Proteome Res. 2004, 3, 61-67.
  3. Håkansson, K.; Emmett, M. R.; Marshall, A. G.; Davidsson, P.; Nilsson, C. L. Structural Analysis of Gel-Separated Glycoproteins from Human Cerebrospinal Fluid by Tandem High Resolution Mass Spectrometry. J. Proteome Res. 2003, 2, 581-588.
  4. Håkansson, K.; Cooper, H. J.; Hudgins, R. R.; Nilsson, C. L. High Resolution Tandem Mass Spectrometry for Structural Biochemistry. Curr. Org. Chem. 2003, 7, 1503-1525.
  5. Cooper, H. J.; Håkansson, K.; Marshall, A. G.; Hudgins, R. R.; Haselmann, K. F.; Kjeldsen, F.; Budnik, B. A.; Polfer, N. C.; Zubarev, R. A. The Diagnostic Value of Amino Acid Side-chain Losses in Electron Capture Dissociation of Polypeptides. Eur. J. Mass Spectrom. 2003, 9, 221-222.
  6. Cooper, H. J.; Hudgins, R. R.; Håkansson, K.; Marshall, A. G. Secondary Fragmentation of Linear Peptides in Electron Capture Dissociation. Int. J. Mass Spectrom. 2003, 228, 723-728.
  7. Håkansson, K.; Chalmers, M. J.; Quinn, J. P.; McFarland, M. A.; Hendrickson, C. L.; Marshall, A. G. Combined Electron Capture and Infrared Multiphoton Dissociation for Multistage MS/MS in an FT-ICR Mass Spectrometer. Anal. Chem. 2003, 75, 3256-3262.
  8. Fagerquist, C. K.; Hudgins, R. R.; Emmett, M. R.; Håkansson, K.; Marshall, A. G. An Antibiotic Linked to Peptides and Proteins is Released by Electron Capture Dissociation Fourier Transform Ion Cyclotron Resonance Mass Spectrometry. J. Am. Soc. Mass Spectrom. 2003, 14, 302-310.
  9. Håkansson, K.; Hudgins, R. R.; Marshall, A. G.; O’Hair, R. A. J. Electron Capture Dissociation and Infrared Multiphoton Dissociation of Oligodeoxynucleotide Dications. J. Am. Soc. Mass Spectrom. 2003, 14, 23-41.
  10. Håkansson, K.; Quenzer, T. L.; Marshall, A. G.; Emmett, M. R. Fourier Transform Ion Cyclotron Resonance Mass Spectrometry for Peptide Analysis. In Mass Spectrometry and Hyphenated Techniques in Neuropeptide Research; Ekman, R.; Silberring, J., Eds.; Wiley: New York, 2002; pp 323-343.
  11. Nilsson, C. L.; Cooper, H. J.; Håkansson, K.; Marshall, A. G.; Östberg, Y.; Lavrinovicha, M.; Bergström, S. Characterization of the P13 Membrane Protein of Borrelia burgdorferi by Mass Spectrometry. J. Am. Soc. Mass Spectrom. 2002, 13, 295-299.
  12. Cooper, H. J.; Hudgins, R. R.; Håkansson, K.; Marshall, A. G. Characterization of Amino Acid Side Chain Losses in Electron Capture Dissociation. J. Am. Soc. Mass Spectrom. 2002, 13, 241-249.
  13. Håkansson, K.; Cooper, H. J.; Emmett, M. R.; Costello, C. E.; Marshall, A. G.; Nilsson, C. L. Electron Capture Dissociation and Infrared Multiphoton Dissociation MS/MS of an N-Glycosylated Tryptic Peptide To Yield Complementary Sequence Information. Anal. Chem. 2001, 73, 4530-4536.
  14. Håkansson, K.; Emmett, M. R.; Hendrickson, C. L.; Marshall, A. G. High Sensitivity Tandem Electron Capture Dissociation FTICR Mass Spectrometry of Microelectrosprayed Peptides. Anal. Chem. 2001, 73, 3605-3610.

GRADUATE STUDENT PUBLICATIONS

  1. Hagman, C.; Håkansson, P.; Buijs, J.; Håkansson, K. Inter-Molecular Migration During Collisional Activation Monitored by Hydrogen/Deuterium Exchange FT-ICR Tandem Mass Spectrometry. J. Am. Soc. Mass Spectrom. 2004, 15, 639-646.
  2. Buijs, J.; Hagman, C.; Håkansson, K.; Richter, J. H.; Håkansson, P.; Oscarsson, S. Inter- and Intra-molecular Migration of Peptide Amide Hydrogens during Electrospray Ionization. J. Am. Soc. Mass Spectrom. 2001, 12, 410-419.
  3. Palmblad, M.; Håkansson, K.; Håkansson, P.; Feng, X. D.; Cooper, H. J.; Giannakopulos, A. E.; Green, P. S.; Derrick, P. J. A 9.4 T Fourier Transform Ion Cyclotron Resonance Mass Spectrometer: Description and Performance. Eur. J. Mass Spectrom. 2000, 6, 267-275.
  4. Buijs, J.; Håkansson, K.; Hagman, C.; Håkansson, P.; Oscarsson, S. A New Method for the Accurate Determination of the Isotopic State of Single Amide Hydrogens within Peptides using Fourier Transform Ion Cyclotron Resonance Mass Spectrometry. Rapid Commun. Mass Spectrom. 2000, 14, 1751-1756.
  5. Håkansson, K.; Coorey, R. V.; Zubarev, R. A.; Talrose, V. L.; Håkansson, P. Low Mass Ions Observed in Plasma Desorption Mass Spectrometry of High Explosives. J. Mass Spectrom. 2000, 35, 337-346.
  6. Håkansson, K.; Axelsson, J.; Palmblad, M.; Håkansson, P. Mechanistic Studies of Multipole Storage Assisted Dissociation. J. Am. Soc. Mass Spectrom. 2000, 11, 210-217.
  7. Håkansson, K.; Zubarev, R. A.; Håkansson, P.; Laiko, V.; Dodonov, A. F. Design and Performance of an Electrospray Ionization Time-of-flight Mass Spectrometer. Rev. Sci. Instrum. 2000, 71, 36-41.
  8. Blomqvist, M.; Bergquist, J.; Westman, A.; Håkansson, K.; Håkansson, P.; Fredman, P.; Ekman, R. Identification of Defensins in Human Lymphocyte Nuclei. Eur. J. Biochem. 1999, 263, 312-318.
  9. Axelsson, J.; Håkansson, K.; Palmblad, M.; Håkansson, P. A Method to Significantly Lessen the Sample Contamination of the Vacuum Interface of an On-axis Electrospray Ion Source by Adding a Mechanical Shutter. Rapid Commun. Mass Spectrom. 1999, 13, 1550-1550.
  10. Håkansson, K.; Zubarev, R. A.; Coorey, R. V.; Talrose, V. L.; Håkansson, P. Interaction between Explosive- and Analyte Layers in Explosive-Matrix Assisted Plasma Desorption Mass Spectrometry. Rapid Commun. Mass Spectrom. 1999, 13, 1169-1174.
  11. Axelsson, J.; Palmblad, M.; Håkansson, K.; Håkansson, P. Electron Capture Dissociation of Substance-P using a Commercially Available FT-ICR Mass Spectrometer. Rapid Commun. Mass Spectrom. 1999, 13, 474-477.
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