Ramadhian, Muhammad Ricky (2015) Telmisartan menghambat peningkatan kadar TGF-β1 aorta tikus (Rattus norvegicus) yang diinduksi NaCl 8%. Seminar Nasional Sains dan Teknologi VI UNILA. ISSN 1098-6596

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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.

Item Type:	Article
Subjects:	R Medicine > R Medicine (General) R Medicine > RS Pharmacy and materia medica
Divisions:	Fakultas Kedokteran (FK) > Prodi Pendidikan Dokter
Depositing User:	MSc Muhammad Ricky Ramadhian
Date Deposited:	03 Sep 2016 08:08
Last Modified:	15 Sep 2016 03:17
URI:	http://repository.lppm.unila.ac.id/id/eprint/529

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