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A Scoring Algorithm for the Automated Analysis of Glycosaminoglycan MS/MS Data.

Duan J, Pepi L, Amster IJ.

J Am Soc Mass Spectrom. 2019 Dec;30(12):2692-2703. doi: 10.1007/s13361-019-02338-9. Epub 2019 Oct 31.


Structural Analysis of Urinary Glycosaminoglycans from Healthy Human Subjects.

Ha X, Sanderson P, Nesheiwat S, Lin L, Yu Y, Zhang F, Amster IJ, Linhardt RJ.

Glycobiology. 2019 Oct 16. pii: cwz088. doi: 10.1093/glycob/cwz088. [Epub ahead of print]


Measurement of residual dipolar couplings in methyl groups via carbon detection.

Williams RV, Yang JY, Moremen KW, Amster IJ, Prestegard JH.

J Biomol NMR. 2019 Apr;73(3-4):191-198. doi: 10.1007/s10858-019-00245-5. Epub 2019 Apr 30.


Structural Characterization of Glycosaminoglycan Carbohydrates Using Ultraviolet Photodissociation.

Klein DR, Leach FE 3rd, Amster IJ, Brodbelt JS.

Anal Chem. 2019 May 7;91(9):6019-6026. doi: 10.1021/acs.analchem.9b00521. Epub 2019 Apr 11.


Investigation of electrospray for a capillary electrophoresis-mass spectrometry interface in reverse polarity and negative ion mode.

Stickney M, Xia Q, Amster IJ.

Eur J Mass Spectrom (Chichester). 2019 Feb;25(1):157-163. doi: 10.1177/1469066719828192.


Paramagnetic Tag for Glycosylation Sites in Glycoproteins: Structural Constraints on Heparan Sulfate Binding to Robo1.

Moure MJ, Eletsky A, Gao Q, Morris LC, Yang JY, Chapla D, Zhao Y, Zong C, Amster IJ, Moremen KW, Boons GJ, Prestegard JH.

ACS Chem Biol. 2018 Sep 21;13(9):2560-2567. doi: 10.1021/acschembio.8b00511. Epub 2018 Aug 16.


A Traveling Wave Ion Mobility Spectrometry (TWIMS) Study of the Robo1-Heparan Sulfate Interaction.

Zhao Y, Yang JY, Thieker DF, Xu Y, Zong C, Boons GJ, Liu J, Woods RJ, Moremen KW, Amster IJ.

J Am Soc Mass Spectrom. 2018 Jun;29(6):1153-1165. doi: 10.1007/s13361-018-1903-4. Epub 2018 Mar 8.


Controlled Chemoenzymatic Synthesis of Heparan Sulfate Oligosaccharides.

Lu W, Zong C, Chopra P, Pepi LE, Xu Y, Amster IJ, Liu J, Boons GJ.

Angew Chem Int Ed Engl. 2018 May 4;57(19):5340-5344. doi: 10.1002/anie.201800387. Epub 2018 Mar 30.


Heparin/heparan sulfate analysis by covalently modified reverse polarity capillary zone electrophoresis-mass spectrometry.

Sanderson P, Stickney M, Leach FE 3rd, Xia Q, Yu Y, Zhang F, Linhardt RJ, Amster IJ.

J Chromatogr A. 2018 Apr 13;1545:75-83. doi: 10.1016/j.chroma.2018.02.052. Epub 2018 Feb 24.


How many human proteoforms are there?

Aebersold R, Agar JN, Amster IJ, Baker MS, Bertozzi CR, Boja ES, Costello CE, Cravatt BF, Fenselau C, Garcia BA, Ge Y, Gunawardena J, Hendrickson RC, Hergenrother PJ, Huber CG, Ivanov AR, Jensen ON, Jewett MC, Kelleher NL, Kiessling LL, Krogan NJ, Larsen MR, Loo JA, Ogorzalek Loo RR, Lundberg E, MacCoss MJ, Mallick P, Mootha VK, Mrksich M, Muir TW, Patrie SM, Pesavento JJ, Pitteri SJ, Rodriguez H, Saghatelian A, Sandoval W, Schlüter H, Sechi S, Slavoff SA, Smith LM, Snyder MP, Thomas PM, Uhlén M, Van Eyk JE, Vidal M, Walt DR, White FM, Williams ER, Wohlschlager T, Wysocki VH, Yates NA, Young NL, Zhang B.

Nat Chem Biol. 2018 Feb 14;14(3):206-214. doi: 10.1038/nchembio.2576.


Structural elucidation of fucosylated chondroitin sulfates from sea cucumber using FTICR-MS/MS.

Agyekum I, Pepi L, Yu Y, Li J, Yan L, Linhardt RJ, Chen S, Amster IJ.

Eur J Mass Spectrom (Chichester). 2018 Feb;24(1):157-167. doi: 10.1177/1469066717731900. Epub 2017 Sep 19.


Sequencing the Dermatan Sulfate Chain of Decorin.

Yu Y, Duan J, Leach FE 3rd, Toida T, Higashi K, Zhang H, Zhang F, Amster IJ, Linhardt RJ.

J Am Chem Soc. 2017 Nov 22;139(46):16986-16995. doi: 10.1021/jacs.7b10164. Epub 2017 Nov 13.


Multiparticle Simulations of Quadrupolar Ion Detection in an Ion Cyclotron Resonance Cell with Four Narrow Aperture Detection Electrodes.

Driver JA, Nagornov KO, Kozhinov AN, Tsybin YO, Kharchenko A, Amster IJ.

J Am Soc Mass Spectrom. 2018 Jan;29(1):51-62. doi: 10.1007/s13361-017-1817-6. Epub 2017 Oct 16.


Negative Electron Transfer Dissociation Sequencing of Increasingly Sulfated Glycosaminoglycan Oligosaccharides on an Orbitrap Mass Spectrometer.

Leach FE 3rd, Riley NM, Westphall MS, Coon JJ, Amster IJ.

J Am Soc Mass Spectrom. 2017 Sep;28(9):1844-1854. doi: 10.1007/s13361-017-1709-9. Epub 2017 Jun 6.


Single Stage Tandem Mass Spectrometry Assignment of the C-5 Uronic Acid Stereochemistry in Heparan Sulfate Tetrasaccharides using Electron Detachment Dissociation.

Agyekum I, Zong C, Boons GJ, Amster IJ.

J Am Soc Mass Spectrom. 2017 Sep;28(9):1741-1750. doi: 10.1007/s13361-017-1643-x. Epub 2017 Apr 7.


Structural Analysis of Heparin-Derived 3-O-Sulfated Tetrasaccharides: Antithrombin Binding Site Variants.

Chen Y, Lin L, Agyekum I, Zhang X, St Ange K, Yu Y, Zhang F, Liu J, Amster IJ, Linhardt RJ.

J Pharm Sci. 2017 Apr;106(4):973-981. doi: 10.1016/j.xphs.2016.11.023. Epub 2016 Dec 20.


Gas-Phase Analysis of the Complex of Fibroblast GrowthFactor 1 with Heparan Sulfate: A Traveling Wave Ion Mobility Spectrometry (TWIMS) and Molecular Modeling Study.

Zhao Y, Singh A, Xu Y, Zong C, Zhang F, Boons GJ, Liu J, Linhardt RJ, Woods RJ, Amster IJ.

J Am Soc Mass Spectrom. 2017 Jan;28(1):96-109. doi: 10.1007/s13361-016-1496-8. Epub 2016 Sep 23.


Integrated Approach to Identify Heparan Sulfate Ligand Requirements of Robo1.

Zong C, Huang R, Condac E, Chiu Y, Xiao W, Li X, Lu W, Ishihara M, Wang S, Ramiah A, Stickney M, Azadi P, Amster IJ, Moremen KW, Wang L, Sharp JS, Boons GJ.

J Am Chem Soc. 2016 Oct 5;138(39):13059-13067. Epub 2016 Sep 27.


Analysis of heparin oligosaccharides by capillary electrophoresis-negative-ion electrospray ionization mass spectrometry.

Lin L, Liu X, Zhang F, Chi L, Amster IJ, Leach FE 3rd, Xia Q, Linhardt RJ.

Anal Bioanal Chem. 2017 Jan;409(2):411-420. doi: 10.1007/s00216-016-9662-1. Epub 2016 Jun 20.


Differentiating chondroitin sulfate glycosaminoglycans using collision-induced dissociation; uronic acid cross-ring diagnostic fragments in a single stage of tandem mass spectrometry.

Kailemia MJ, Patel AB, Johnson DT, Li L, Linhardt RJ, Amster IJ.

Eur J Mass Spectrom (Chichester). 2015;21(3):275-85. doi: 10.1255/ejms.1366.


Investigating changes in the gas-phase conformation of Antithrombin III upon binding of Arixtra using traveling wave ion mobility spectrometry (TWIMS).

Zhao Y, Singh A, Li L, Linhardt RJ, Xu Y, Liu J, Woods RJ, Amster IJ.

Analyst. 2015 Oct 21;140(20):6980-9. doi: 10.1039/c5an00908a.


The Interaction of Heparin Tetrasaccharides with Chemokine CCL5 Is Modulated by Sulfation Pattern and pH.

Singh A, Kett WC, Severin IC, Agyekum I, Duan J, Amster IJ, Proudfoot AE, Coombe DR, Woods RJ.

J Biol Chem. 2015 Jun 19;290(25):15421-36. doi: 10.1074/jbc.M115.655845. Epub 2015 Apr 23.


The unexpected formation of [M - H]+ species during MALDI and dopant-free APPI MS analysis of novel antineoplastic curcumin analogues.

Awad H, Stoudemayer MJ, Usher L, Amster IJ, Cohen A, Das U, Whittal RM, Dimmock J, El-Aneed A.

J Mass Spectrom. 2014 Nov;49(11):1139-47. doi: 10.1002/jms.3434.


Oligosaccharide analysis by mass spectrometry: a review of recent developments.

Kailemia MJ, Ruhaak LR, Lebrilla CB, Amster IJ.

Anal Chem. 2014 Jan 7;86(1):196-212. doi: 10.1021/ac403969n. Epub 2013 Dec 16. Review. No abstract available.


High-field asymmetric-waveform ion mobility spectrometry and electron detachment dissociation of isobaric mixtures of glycosaminoglycans.

Kailemia MJ, Park M, Kaplan DA, Venot A, Boons GJ, Li L, Linhardt RJ, Amster IJ.

J Am Soc Mass Spectrom. 2014 Feb;25(2):258-68. doi: 10.1007/s13361-013-0771-1. Epub 2013 Nov 20.


Structurally informative tandem mass spectrometry of highly sulfated natural and chemoenzymatically synthesized heparin and heparan sulfate glycosaminoglycans.

Kailemia MJ, Li L, Xu Y, Liu J, Linhardt RJ, Amster IJ.

Mol Cell Proteomics. 2013 Apr;12(4):979-90. doi: 10.1074/mcp.M112.026880. Epub 2013 Feb 21.



Leach FE 3rd, Arungundram S, Al-Mafraji K, Venot A, Boons GJ, Amster IJ.

Int J Mass Spectrom. 2012 Dec 15;330-332:152-159.


Hexuronic acid stereochemistry determination in chondroitin sulfate glycosaminoglycan oligosaccharides by electron detachment dissociation.

Leach FE 3rd, Ly M, Laremore TN, Wolff JJ, Perlow J, Linhardt RJ, Amster IJ.

J Am Soc Mass Spectrom. 2012 Sep;23(9):1488-97. doi: 10.1007/s13361-012-0428-5. Epub 2012 Jul 24.


Complete mass spectral characterization of a synthetic ultralow-molecular-weight heparin using collision-induced dissociation.

Kailemia MJ, Li L, Ly M, Linhardt RJ, Amster IJ.

Anal Chem. 2012 Jul 3;84(13):5475-8. doi: 10.1021/ac3015824. Epub 2012 Jun 21.



Leach FE 3rd, Xiao Z, Laremore TN, Linhardt RJ, Amster IJ.

Int J Mass Spectrom. 2011 Dec 1;308(2-3):253-259.


The proteoglycan bikunin has a defined sequence.

Ly M, Leach FE 3rd, Laremore TN, Toida T, Amster IJ, Linhardt RJ.

Nat Chem Biol. 2011 Oct 9;7(11):827-33. doi: 10.1038/nchembio.673.


Electrospray ionization Fourier transform mass spectrometric analysis of intact bikunin glycosaminoglycan from normal human plasma.

Laremore TN, Leach FE 3rd, Amster IJ, Linhardt RJ.

Int J Mass Spectrom. 2011 Aug 15;305(2-3):109-115.


Negative electron transfer dissociation Fourier transform mass spectrometry of glycosaminoglycan carbohydrates.

Leach FE 3rd, Wolff JJ, Xiao Z, Ly M, Laremore TN, Arungundram S, Al-Mafraji K, Venot A, Boons GJ, Linhardt RJ, Amster IJ.

Eur J Mass Spectrom (Chichester). 2011;17(2):167-76. doi: 10.1255/ejms.1120.


Novel pathway for assimilation of dimethylsulphoniopropionate widespread in marine bacteria.

Reisch CR, Stoudemayer MJ, Varaljay VA, Amster IJ, Moran MA, Whitman WB.

Nature. 2011 May 12;473(7346):208-11. doi: 10.1038/nature10078.


Multivariate analysis of electron detachment dissociation and infrared multiphoton dissociation mass spectra of heparan sulfate tetrasaccharides differing only in hexuronic acid stereochemistry.

Oh HB, Leach FE 3rd, Arungundram S, Al-Mafraji K, Venot A, Boons GJ, Amster IJ.

J Am Soc Mass Spectrom. 2011 Mar;22(3):582-90. doi: 10.1007/s13361-010-0047-y. Epub 2011 Jan 28.


An integrated transcriptomic and computational analysis for biomarker identification in gastric cancer.

Cui J, Chen Y, Chou WC, Sun L, Chen L, Suo J, Ni Z, Zhang M, Kong X, Hoffman LL, Kang J, Su Y, Olman V, Johnson D, Tench DW, Amster IJ, Orlando R, Puett D, Li F, Xu Y.

Nucleic Acids Res. 2011 Mar;39(4):1197-207. doi: 10.1093/nar/gkq960. Epub 2010 Oct 21.


Glycosaminoglycan characterization by electrospray ionization mass spectrometry including fourier transform mass spectrometry.

Laremore TN, Leach FE 3rd, Solakyildirim K, Amster IJ, Linhardt RJ.

Methods Enzymol. 2010;478:79-108. doi: 10.1016/S0076-6879(10)78003-4.


Overexpression of ST6GalNAcV, a ganglioside-specific alpha2,6-sialyltransferase, inhibits glioma growth in vivo.

Kroes RA, He H, Emmett MR, Nilsson CL, Leach FE 3rd, Amster IJ, Marshall AG, Moskal JR.

Proc Natl Acad Sci U S A. 2010 Jul 13;107(28):12646-51. doi: 10.1073/pnas.0909862107. Epub 2010 Jun 28.


Negative electron transfer dissociation of glycosaminoglycans.

Wolff JJ, Leach FE 3rd, Laremore TN, Kaplan DA, Easterling ML, Linhardt RJ, Amster IJ.

Anal Chem. 2010 May 1;82(9):3460-6. doi: 10.1021/ac100554a.


Modular synthesis of heparan sulfate oligosaccharides for structure-activity relationship studies.

Arungundram S, Al-Mafraji K, Asong J, Leach FE 3rd, Amster IJ, Venot A, Turnbull JE, Boons GJ.

J Am Chem Soc. 2009 Dec 2;131(47):17394-405. doi: 10.1021/ja907358k.


Comparison of particle-in-cell simulations with experimentally observed frequency shifts between ions of the same mass-to-charge in Fourier transform ion cyclotron resonance mass spectrometry.

Leach FE 3rd, Kharchenko A, Heeren RM, Nikolaev E, Amster IJ.

J Am Soc Mass Spectrom. 2010 Feb;21(2):203-8. doi: 10.1016/j.jasms.2009.10.001. Epub 2009 Oct 6.


Electron capture dissociation, electron detachment dissociation and infrared multiphoton dissociation of sucrose octasulfate.

Wolff JJ, Laremore TN, Leach Ii FE, Linhardt RJ, Amster IJ.

Eur J Mass Spectrom (Chichester). 2009;15(2):275-81. doi: 10.1255/ejms.951.


The Sac10b homolog in Methanococcus maripaludis binds DNA at specific sites.

Liu Y, Guo L, Guo R, Wong RL, Hernandez H, Hu J, Chu Y, Amster IJ, Whitman WB, Huang L.

J Bacteriol. 2009 Apr;191(7):2315-29. doi: 10.1128/JB.01534-08. Epub 2009 Jan 23.


Electron-induced dissociation of glycosaminoglycan tetrasaccharides.

Wolff JJ, Laremore TN, Aslam H, Linhardt RJ, Amster IJ.

J Am Soc Mass Spectrom. 2008 Oct;19(10):1449-58. doi: 10.1016/j.jasms.2008.06.024. Epub 2008 Jul 2.


Influence of charge state and sodium cationization on the electron detachment dissociation and infrared multiphoton dissociation of glycosaminoglycan oligosaccharides.

Wolff JJ, Laremore TN, Busch AM, Linhardt RJ, Amster IJ.

J Am Soc Mass Spectrom. 2008 Jun;19(6):790-8. doi: 10.1016/j.jasms.2008.03.010. Epub 2008 Apr 3.


Structural analysis of bikunin glycosaminoglycan.

Chi L, Wolff JJ, Laremore TN, Restaino OF, Xie J, Schiraldi C, Toida T, Amster IJ, Linhardt RJ.

J Am Chem Soc. 2008 Feb 27;130(8):2617-25. doi: 10.1021/ja0778500. Epub 2008 Feb 5.


Improved mass accuracy for higher mass peptides by using SWIFT excitation for MALDI-FTICR mass spectrometry.

Jing L, Li C, Wong RL, Kaplan DA, Amster IJ.

J Am Soc Mass Spectrom. 2008 Jan;19(1):76-81. Epub 2007 Oct 30.

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