Abstract：
:We introduce TICRA (transplant-insert-constrain-relax-assemble), a method for modeling the structure of unknown protein-ligand complexes using the X-ray crystal structures of homologous proteins and ligands with known activity. We present results from modeling the structures of protein kinase-inhibitor complexes using p38 and Lck as examples. These examples show that the TICRA method may be used prospectively to create and refine models for protein kinase-inhibitor complexes with an overall backbone rmsd of less than 0.75 Å for the kinase domain, when compared to published X-ray crystal structures. Further refinement of the models of the kinase domains of p38 and Lck in complex with their cognate ligands from the published crystal structures was able to improve the rmsd's of the model complexes to below 0.5 Å. Our results show that TICRA is a useful approach to the problem of structure-based drug design in cases where little structural information is available for the target proteins and the binding mode of active compounds is unknown.
journal_name
J Chem Inf Modeljournal_title
Journal of chemical information and modelingauthors
Meshkat S,Klon AE,Zou J,Wiseman JS,Konteatis Zdoi
10.1021/ci100256usubject
Has Abstractpub_date
2011-01-24 00:00:00pages
52-60issue
1eissn
1549-9596issn
1549-960Xjournal_volume
51pub_type
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