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2016

Kitova, Elena N., Klassen, John S., Fan, Xuxin, Privé, Gilbert G., Cairo, Christopher W., Xiong, Zi Jian, Ng, Kenneth K. S., Zou, Chunxia, Eugenio, Luiz, Li, Jun

An electrospray ionization mass spectrometry (ESI-MS) assay for screening carbohydrate libraries against lectins is described. The assay is based on the proxy protein ESI-MS method, which combines direct ESI-MS protein–ligand binding measurements and competitive protein binding, to simultaneously...

2016

Privé, Gilbert G., Ng, Kenneth K. S., Xiong, Zi Jian, Klassen, John S., Kitova, Elena N., Fan, Xuxin, Li, Jun, Zou, Chunxia, Eugenio, Luiz, Cairo, Christopher W.

An electrospray ionization mass spectrometry (ESI-MS) assay for screening carbohydrate libraries against lectins is described. The assay is based on the proxy protein ESI-MS method, which combines direct ESI-MS protein–ligand binding measurements and competitive protein binding, to simultaneously...

2014

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...

2016

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...

2016

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...

2013

Deng, Lu, Klassen, John S., Kitova, Elena N., Sinelnikov, Igor

The results of time-resolved blackbody infrared radiative dissociation experiments performed on gaseous protonated ions, at charge states +15, +16 and +17, of the homotetramer streptavidin (S4) are reported. Evidence is found for three dissociation pathways involving (i) the loss of a single...

2013

Klassen, John S., Sinelnikov, Igor, Kitova, Elena N., Deng, Lu

The results of time-resolved blackbody infrared radiative dissociation experiments performed on gaseous protonated ions, at charge states +15, +16 and +17, of the homotetramer streptavidin (S4) are reported. Evidence is found for three dissociation pathways involving (i) the loss of a single...

2015

Zhong, Weiming, Quigley, Christina, Klassen, John S., Fang, Hao, Jiang, Xi, Wei, Chao, Tan, Ming, Xia, Ming, Huang, Pengwei, Fan, Qiang, Zhang, Xufu

The recent discovery that human noroviruses (huNoVs) recognize sialic acids (SAs) in addition to histo-blood group antigens (HBGAs) pointed to a new direction in studying virus-host interactions during calicivirus infection. HuNoVs remain difficult to study due to the lack of an effective cell...