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- 144Chemistry, Department of/Journal Articles (Chemistry)
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- 69Klassen, John S.
- 52Kitova, Elena N.
- 17Serpe, Michael J.
- 13Macauley, Matthew S.
- 12Liu, Lan
- 10El-Hawiet, Amr
- 20Electrospray ionization mass spectrometry
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Streptococcus pneumoniae endohexosaminidase D, structural and mechanistic insight into substrate-assisted catalysis in family 85 glycoside hydrolases
Download2009
Abbott, D. W., Boraston, Alisdair B. , Vocadlo, David J., Macauley, Matthew S.
Endo-β-d-glucosaminidases from family 85 of glycoside hydrolases (GH85 endohexosaminidases) act to cleave the glycosidic linkage between the two N-acetylglucosamine units that make up the chitobiose core of N-glycans. Endohexosaminidase D (Endo-D), produced by Streptococcus pneumoniae, is...
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2004
Okon, Mark, Schulman, Brenda A., Macauley, Matthew S., McIntosh, Lawrence P., Mackereth, Cameron D., Schärpf, Manuela, Errington, Wesley J.
Although sumoylation regulates a diverse and growing number of recognized biological processes, the molecular mechanisms by which the covalent attachment of the ubiquitin-like protein SUMO can alter the properties of a target protein remain to be established. To address this question, we have...
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Structural basis for antibody recognition in the receptor-binding domains of toxins A and B from Clostridium difficile
Download2014
Ng, Kenneth K. S., Tanha, Jamshid, Kitova, Elena N., Eugenio, Luiz, Murase, Tomohiko, Klassen, John S., Hussack, Greg, Schorr, Melissa
Clostridium difficile infection is a serious and highly prevalent nosocomial disease in which the two large, Rho-glucosylating toxins TcdA and TcdB are the main virulence factors. We report for the first time crystal structures revealing how neutralizing and non-neutralizing single-domain...
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Structure and stability of carbohydrate-lipid interactions: Methylmannose polysaccharide-fatty acid complexes
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Klassen, John S., Siuda, Iwona, Renaud, Justin, Tieleman, D. Peter, Kitova, Elena N., Liu, Lan, Mayer, Paul M., Richards, Michele R., Lowary, Todd L.
We report a detailed study of the structure and stability of carbohydrate–lipid interactions. Complexes of a methylmannose polysaccharide (MMP) derivative and fatty acids (FAs) served as model systems. The dependence of solution affinities and gas-phase dissociation activation energies (Ea) on FA...
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Structure and stability of carbohydrate-lipid interactions: Methylmannose polysaccharide-fatty acid complexes
Download2016
Mayer, Paul M., Richards, Michele R., Lowary, Todd L., Renaud, Justin, Klassen, John S., Tieleman, D. Peter, Kitova, Elena N., Liu, Lan, Siuda, Iwona
We report a detailed study of the structure and stability of carbohydrate–lipid interactions. Complexes of a methylmannose polysaccharide (MMP) derivative and fatty acids (FAs) served as model systems. The dependence of solution affinities and gas-phase dissociation activation energies (Ea) on FA...
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Synthesis of a homologous series of galactofuranose-containing mycobacterial arabinogalactan fragments
Download2019-01-31
Mycobacteria, including the human pathogen Mycobacterium tuberculosis the causative agent of tuberculosis, produce a complex cell wall structure made of carbohydrates and lipids. The major structural element of the mycobacterial cell wall is a glycoconjugate called the mycolic...
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Synthesis of the Campylobacter jejuni 81-176 strain capsular polysaccharide repeating unit reveals the absolute configuration of its O-methyl phosphoramidate motif
Download2019-01-30
V. Narasimharao Thota, Michael J. Ferguson, Ryan P. Sweeney, Todd L. Lowary
The O-methyl phosphoramidate (MeOPN) motif is a non-stoichiometric modification of capsular polysaccharides (CPS) in ~70% of all Campylobacter jejuni strains. Infections by C. jejuni lead to food-borne illnesses and the CPS they produce are key virulence factors. The MeOPN phosphorus atom in...
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2019-01-31
Chlorella viruses produce N-linked glycoproteins with carbohydrate moieties that differ in structure from all other N- linked glycans. In addition, unlike most viruses, these organisms do not hijack the biosynthetic machinery of the host to make glycocoproteins; instead, they produce their own...
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Synthetic Polyprenol-Pyrophosphate Linked Oligosaccharides Are Efficient Substrates for Mycobacterial Galactan Biosynthetic Enzymes
Download2019-01-31
Xiaochao Xue, Ruixiang Blake Zheng, Akihiko Koizumi, Ling Han, John S. Klassen, Todd L. Lowary
Mycobacteria, including the human pathogen Mycobacterium tuberculosis, produce a complex cell wall that is critical for their survival. The largest structural component of the cell wall, the mycolylarabinogalactanpeptidoglycan complex, has at its core a galactan domain composed of...
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2014
Marcondes, Maria C. G., Macauley, Matthew S., Pang, Poh-Choo, Bortell, Nikki, Arlian, Britni M., Rillahan, Cory D., Haslam, Stuart M., Dell, Anne , Paulson, James C.
Sialic acid terminates glycans of glycoproteins and glycolipids that play numerous biological roles in health and disease. Although genetic tools are available for interrogating the effects of decreased or abolished sialoside expression in mice, pharmacological inhibition of the sialyltransferase...