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Skip to Search Results- 69Klassen, John S.
- 52Kitova, Elena N.
- 17Serpe, Michael J.
- 13Macauley, Matthew S.
- 12Liu, Lan
- 10El-Hawiet, Amr
- 20Electrospray ionization mass spectrometry
- 12Affinity
- 11Complexes
- 10Carbohydrates
- 8Binding
- 8Etalons
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Measuring positive cooperativity using the direct ESI-MS assay: Cholera toxin B subunit homopentamer binding to GM1 pentasaccharide
Download2014
Kitova, Elena N., Lin, Hong, Klassen, John S.
Direct electrospray ionization mass spectrometry (ESI-MS) assay was used to investigate the stepwise binding of the GM1 pentasaccharide β-D-Galp-(1→3)-β-D-GalpNAc-(1→4)[α-D-Neu5Ac-(2→3)]-β-D-Galp-(1→4)-β-D-Glcp (GM1os) to the cholera toxin B subunit homopentamer (CTB5) and to establish...
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Metabolism of vertebrate amino sugars with N-glycolyl groups: Intracellular β-O-linked N-glycolylglucosamine (GlcNGc), UDP-GlcNGc,and the biochemical and structural rationale for the substrate tolerance of β-O-linked& beta;-N-acetylglucosaminidase
Download2012
Vocadlo, David J. , Chan, Jefferson, Whitworth, Garrett A., Macauley, Matthew S., Stubbs, Keith A., Varki, Ajit, Davies, Gideon J., Yuzwa, Scott, Zandberg, Wesley, Bennet, Andrew J., He, Yuan
The O-GlcNAc modification involves the attachment of single β-O-linked N-acetylglucosamine residues to serine and threonine residues of nucleocytoplasmic proteins. Interestingly, previous biochemical and structural studies have shown that O-GlcNAcase (OGA), the enzyme that removes O-GlcNAc from...
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Modular Construction of Photoanodes with Covalently Bonded Ru- and Ir-Polypyridyl Visible Light Chromophores
Download2018-07-01
Chao Wang, Mona Amiri, Riley T. Endean, Octavio Martinez Perez, Samuel Varley, Ben Rennie, Loorthuraja Rasu, Steven H. Bergens
1,10-phenanthroline is grafted to indium tin oxide (ITO) and titanium dioxide nanoparticle (TiO2) semiconductors by electroreduction of 5-diazo-1,10-phenanthroline in 0.1 M H2SO4. The lower and upper potential limits (-0.20 and 0.15 VSCE, respectively) were set to avoid reduction and oxidation of...
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Molecular dynamics simulations of viral neuraminidase inhibitors with the human neuraminidase enzymes: Insights into isoenzyme selectivity
Download2018-05-16
Richards, Michele R, Guo, Tianlin, Hunter, Carmanah D, Cairo, Christopher W.
Inhibitors of viral neuraminidase enzymes have been previously developed as therapeutics. Humans can express multiple forms of neuraminidase enzymes (NEU1, NEU2, NEU3, NEU4) that share a similar active site and enzymatic mechanism with their viral counterparts. Using a panel of purified human...
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Nonspecific interactions between proteins and charged biomolecules in electrospray ionization mass spectrometry
Download2010
Soya, Naoto, Klassen, John S., Kitova, Elena N., Sun, Nian
An investigation of the nonspecific association of small charged biomolecules and proteins in electrospray ionization mass spectrometry (ES-MS) is described. Aqueous solutions containing pairs of proteins and a small acidic or basic biomolecule that does not interact specifically with either of...
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Nonspecific interactions between proteins and charged biomolecules in electrospray ionization mass spectrometry
Download2010
Kitova, Elena N., Sun, Nian, Klassen, John S., Soya, Naoto
An investigation of the nonspecific association of small charged biomolecules and proteins in electrospray ionization mass spectrometry (ES-MS) is described. Aqueous solutions containing pairs of proteins and a small acidic or basic biomolecule that does not interact specifically with either of...
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O-GlcNAcase uses substrate-assisted catalysis Kinetic analysis and development of highly selective mechanism-inspired inhibitors
Download2005
Vocadlo, David J., Whitworth, Garrett E., Macauley, Matthew S., Debowski, Aleksandra W., Chin, Danielle
The post-translational modification of serine and threonine residues of nucleocytoplasmic proteins with 2-acetamido-2-deoxy-d-glucopyranose (GlcNAc) is a reversible process implicated in multiple cellular processes. The enzyme O-GlcNAcase catalyzes the cleavage of β-O-linked GlcNAc (O-GlcNAc)...
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P. aeruginosa SGNH hydrolase-like proteins AlgJ and AlgX have similar topology but separate and distinct roles in alginate acetylation
Download2014
Howell, P. Lynne, Klassen, John S., Robinson, Howard, Kitova, Elena N., Dawson, Karen, Clarke, Anthony J., Little, Dustin J., Walvoort, Marthe T., Weadge, Joel T., Codee, Jeroen D. C., Baker, Perrin, Whitney, John C., Ohman, Dennis E., Ricer, Tyler, Moynihan, Patrick J.
The O-acetylation of polysaccharides is a common modification used by pathogenic organisms to protect against external forces. Pseudomonas aeruginosa secretes the anionic, O-acetylated exopolysaccharide alginate during chronic infection in the lungs of cystic fibrosis patients to form the major...
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Photothermally induced optical property changes of poly(N-isopropylacrylamide) microgel-based etalons
Download2015
Islam, Molla R., Irvine, Jessica, Serpe, Michael J.
Poly(N-isopropylacrylamide) microgel-based optical devices were designed such that they can be stimulated to change their optical properties in response to light produced by a light-emitting diode (LED). The devices were fabricated by sandwiching the synthesized microgels between two Cr/Au layers...
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2015
Klassen, John S., Cairo, Christopher W.Xiong, Zi Jian, Li, Jun, Privé, Gilbert G., Leney, Aneika C., Kitova, Elena N., Darestani, Reza Rezaei, Zou, Chunxia, Nikjah, Sanaz
Protein interactions with glycolipids are implicated in diverse cellular processes. However, the study of protein–glycolipid complexes remains a significant experimental challenge. Here, we describe a powerful new assay that combines electrospray ionization mass spectrometry (ESI-MS) and...