Journal
PLOS ONE
Volume 7, Issue 8, Pages -Publisher
PUBLIC LIBRARY SCIENCE
DOI: 10.1371/journal.pone.0042612
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Funding
- Higher Education Commission (HEC) Pakistan
- Deutsche Forschungsgemeinschaft
- Karlsruhe Institute of Technology
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Cyclin-dependent kinases (CDKs) play a key role in the cell cycle and are important anti-cancer drug targets. The natural product fascaplysin inhibits CDK4 with surprising selectivity (IC50 = 0.4 mu M) compared to the close homolog CDK2 (IC50 = 500 mu M). Free energy calculations of the positively charged fascaplysin and an uncharged iso-electronic derivative in the CDK2 and CDK4 inhibitor complexes indicate that the positive charge of fascaplysin is crucial for selectivity. This finding will guide further improvements in the design of fascaplysin-based selective inhibitors for CDK4.
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