Establishing computational approaches towards identifying malarial allosteric modulators: a case study of plasmodium falciparum hsp70s
- Authors: Amusengeri, Arnold , Astl, Lindy , Lobb, Kevin A , Verkhivker, Gennady M , Tastan Bishop, Özlem
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/163000 , vital:41003 , https://doi.org/10.3390/ijms20225574
- Description: Combating malaria is almost a never-ending battle, as Plasmodium parasites develop resistance to the drugs used against them, as observed recently in artemisinin-based combination therapies. The main concern now is if the resistant parasite strains spread from Southeast Asia to Africa, the continent hosting most malaria cases. To prevent catastrophic results, we need to find non-conventional approaches. Allosteric drug targeting sites and modulators might be a new hope for malarial treatments. Heat shock proteins (HSPs) are potential malarial drug targets and have complex allosteric control mechanisms. Yet, studies on designing allosteric modulators against them are limited. Here, we identified allosteric modulators (SANC190 and SANC651) against P. falciparum Hsp70-1 and Hsp70-x, affecting the conformational dynamics of the proteins, delicately balanced by the endogenous ligands. Previously, we established a pipeline to identify allosteric sites and modulators. This study also further investigated alternative approaches to speed up the process by comparing all atom molecular dynamics simulations and dynamic residue network analysis with the coarse-grained (CG) versions of the calculations. Betweenness centrality (BC) profiles for PfHsp70-1 and PfHsp70-x derived from CG simulations not only revealed similar trends but also pointed to the same functional regions and specific residues corresponding to BC profile peaks.
- Full Text:
- Date Issued: 2019
In silico study of Plasmodium 1-deoxy-d-xylulose 5-phosphate reductoisomerase (DXR) for identification of novel inhibitors from SANCDB:
- Authors: Diallo, Bakary N , Lobb, Kevin A , Tastan Bishop, Özlem
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/162687 , vital:40973 , https://doi.org/10.21955/aasopenres.1114960.1
- Description: In this study, we intended to find potential 1-deoxy-D-xylulose 5-phosphate reductoisomerase (DXR) inhibitors as antimalarial drugs from the South African National Compound Database (SANCDB; https://sancdb.rubi.ru.ac.za) using computational tools.
- Full Text:
- Date Issued: 2019
Novel potential antimalarials through drug repurposing and multitargeting: a Computational Approach
- Authors: Diallo, Bakary N , Lobb, Kevin A , Tastan Bishop, Özlem
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/162676 , vital:40972 , https://doi.org/10.21955/aasopenres.1114955.1
- Description: This study aims to identify potential antimalarials from Food and Drug Administration (FDA) approved drugs.
- Full Text:
- Date Issued: 2019