Two-dimensional infrared spectroscopy reveals the complex behaviour of an amyloid fibril inhibitor

…, P Marek, P Cao, C Chiu, S Singh, AM Woys… - Nature …, 2012 - nature.com
Amyloid formation has been implicated in the pathology of over 20 human diseases, but the
rational design of amyloid inhibitors is hampered by a lack of structural information about …

Two-dimensional IR spectroscopy and segmental 13C labeling reveals the domain structure of human γD-crystallin amyloid fibrils

SD Moran, AM Woys, LE Buchanan… - Proceedings of the …, 2012 - National Acad Sciences
The structural eye lens protein γD-crystallin is a major component of cataracts, but its
conformation when aggregated is unknown. Using expressed protein ligation, we uniformly 13 C …

Residue-specific structural kinetics of proteins through the union of isotope labeling, mid-IR pulse shaping, and coherent 2D IR spectroscopy

CT Middleton, AM Woys, SS Mukherjee, MT Zanni - Methods, 2010 - Elsevier
We describe a methodology for studying protein kinetics using a rapid-scan technology for
collecting 2D IR spectra. In conjunction with isotope labeling, 2D IR spectroscopy is able to …

2DIR spectroscopy of human amylin fibrils reflects stable β-sheet structure

…, S Singh, AS Reddy, AM Woys… - Journal of the …, 2011 - ACS Publications
The aggregation of human amylin to form amyloid contributes to islet β-cell dysfunction in
type 2 diabetes. Studies of amyloid formation have been hindered by the low structural …

Parallel β-sheet vibrational couplings revealed by 2D IR spectroscopy of an isotopically labeled macrocycle: Quantitative benchmark for the interpretation of amyloid …

AM Woys, AM Almeida, L Wang, CC Chiu… - Journal of the …, 2012 - ACS Publications
Infrared spectroscopy is playing an important role in the elucidation of amyloid fiber formation,
but the coupling models that link spectra to structure are not well tested for parallel β-…

Efficient microwave-assisted synthesis of human islet amyloid polypeptide designed to facilitate the specific incorporation of labeled amino acids

P Marek, AM Woys, K Sutton, MT Zanni… - Organic letters, 2010 - ACS Publications
A cost-efficient, time-reducing solid-phase synthesis of the amyloidogenic, 37 residue islet
amyloid polypeptide (IAPP) is developed using two pseudoprolines (highlighted blue in …

2D IR line shapes probe ovispirin peptide conformation and depth in lipid bilayers

AM Woys, YS Lin, AS Reddy, W Xiong… - Journal of the …, 2010 - ACS Publications
We report a structural study on the membrane binding of ovispirin using 2D IR line shape
analysis, isotope labeling, and molecular dynamics simulations. Ovispirin is an antibiotic …

Multi-attribute Raman spectroscopy (MARS) for monitoring product quality attributes in formulated monoclonal antibody therapeutics

…, D McDaniel, E Kadaub, J Yang, M Saggu, A Woys… - MAbs, 2022 - Taylor & Francis
Rapid release of biopharmaceutical products enables a more efficient drug manufacturing
process. Multi-attribute methods that target several product quality attributes (PQAs) at one …

A strongly absorbing class of non-natural labels for probing protein electrostatics and solvation with FTIR and 2D IR spectroscopies

AM Woys, SS Mukherjee, DR Skoff… - The journal of …, 2013 - ACS Publications
A series of non-natural infrared probes is reported that consist of a metal-tricarbonyl
modified with a −(CH 2 ) n – linker and cysteine-specific leaving group. They can be site-specifically …

Adsorption of non-ionic surfactant and monoclonal antibody on siliconized surface studied by neutron reflectometry

Z Zhang, AM Woys, K Hong, C Grapentin… - Journal of Colloid and …, 2021 - Elsevier
The adsorption of monoclonal antibodies (mAbs) on hydrophobic surfaces is known to cause
protein aggregation and degradation. Therefore, surfactants, such as Poloxamer 188, are …