Projects per year
Abstract
Predicting the binding mode of flexible polypeptides to proteins is an important task that falls outside the domain of applicability of most small molecule and protein−protein docking tools. Here, we test the small molecule flexible ligand docking program Glide on a set of 19 non-α-helical peptides and systematically improve pose prediction accuracy by enhancing Glide sampling for flexible polypeptides. In addition, scoring of the poses was improved by post-processing with physics-based implicit solvent MM- GBSA calculations. Using the best RMSD among the top 10 scoring poses as a metric, the success rate (RMSD ≤ 2.0 Å for the interface backbone atoms) increased from 21% with default Glide SP settings to 58% with the enhanced peptide sampling and scoring protocol in the case of redocking to the native protein structure. This approaches the accuracy of the recently developed Rosetta FlexPepDock method (63% success for these 19 peptides) while being over 100 times faster. Cross-docking was performed for a subset of cases where an unbound receptor structure was available, and in that case, 40% of peptides were docked successfully. We analyze the results and find that the optimized polypeptide protocol is most accurate for extended peptides of limited size and number of formal charges, defining a domain of applicability for this approach.
Original language | English |
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Journal | The Gerontologist |
Early online date | 25 Jun 2020 |
DOIs | |
Publication status | Published - 25 Jun 2020 |
Keywords
- Dementia
- Alzheimer's disease
- measurement
- Outcome
- core outcome set
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Dementia and Ageing Research Team (DART)
Keady, J., Pusey, H., Burrow, S., Kindell, J., Clark, A. & Elvish, R.
Project: Research
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Neighbourhoods and Dementia: A Mixed Methods Study.
Keady, J., Burns, A., Challis, D., Davies, L., Leroi, I., Nazroo, J., Pendleton, N., Reeves, D., Swarbrick, C., Tampubolon, G., Taylor, C. & Young, A.
1/01/14 → 31/10/19
Project: Research