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Combinatorial Chemistry & High Throughput Screening

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ISSN (Print): 1386-2073
ISSN (Online): 1875-5402

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Research Article

Protein-protein Interaction and Molecular Dynamics of Iturin A Gene on Effector Proteins of Phytophthora infestans

Author(s): Bhimanagoud Kumbar*, Shivananda Kandagalla, Basavapattana Rudresh Bharath, Belenahalli Shekarappa Sharath and Riaz Mahmood

Volume 24, Issue 2, 2021

Published on: 19 July, 2020

Page: [259 - 268] Pages: 10

DOI: 10.2174/1386207323666200720012054

Price: $65

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Abstract

Aim And Objectives: Phytophthora infestans (Mont.) de Bary, the fungal pathogen causes late blight, which results in devastating economic loss among the Solanaceae. The bacillus lipopeptides show the antagonistic activity against the many plant pathogens, among bacillus lipopeptides reported as the antifungal gene. Hence, to understand the in silico antifungal activity, we have selected gene iturin A (AXN89987) produced by Bacillus spp to check the molecular dynamics study with the effector proteins of the P. infestanse. In this concern, known effector proteins of P. infestans were subjected to the protein-protein interaction followed by simulation.

Materials and Methods: Iturin A gene was amplified using the soil bacterium Bacillus subtilis with gene-specific primers, cloned into pTZ 57R/T vector and confirmed by sequencing. To get better insights, the protein model was developed for Iturin A using Modeller 9.17, using PDB structure of ID 4MRT (Phosphopantetheine transferase Sfp) and 1QR0 (4'-phosphopantetheinyl moiety of coenzyme A) as a template, it shared the identity 72% and expected P-value: 3e-121, respectively. The model quality was assessed using ProSA and PROCHECK programs.

Results: The potency of modelled protein against effector proteins of P. infestans were evaluated in silico using the HADDOCK server and the results showed the high affinity of towards the effector protein Host ATG8 (PDB-5L83). Finally, the simulation was performed to the docked conformation of with Host ATG8 to further understand the stability of the complex using the Desmond program.

Conclusion: Altogether, the protein-protein interaction and simulation study propose a new methodology and to uncover possible antifungal activity of iturin A against effector proteins of P. infestans.

Keywords: Bacillus, Phytophthora infestans, iturin A, protein interaction, HADDOCK, modeller v9.17.

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