Comparison among Feature Encoding Techniques for HIV-1 Protease Cleavage Specificity

Year 2015, Volume: 3 Issue: 2, 62 - 66, 01.04.2015

Murat Gök , Uğur Turhal Aykut Durgut

https://doi.org/10.18201/ijisae.21005

Cited By: 1

Abstract

HIV-1 protease which is responsible for the generation of infectious viral particles by cleaving the virus polypeptides, play an indispensable role in the life cycle of HIV-1. Knowledge of the substrate specificity of HIV-1 protease will pave the way of development of efficacious HIV-1 protease inhibitors. In the prediction of HIV-1 protease cleavage site techniques, many efforts have been devoted. Last decade, several works have approached the prediction of HIV-1 protease cleavage site problem by applying a number of methods from the field of machine learning. However, it is still difficult for researchers to choose the best method due to the lack of an effective and up-to-date comparison. Here, we have made an extensive study on feature encoding techniques for the problem of HIV-1 protease specificity on diverse machine learning algorithms. Also, for the first time, we applied OEDICHO technique, which is a combination of orthonormal encoding and the binary representation of selected 10 best physicochemical properties of amino acids derived from Amino Acid index database, to predict HIV-1 protease cleavage sites.

Keywords

HIV-1 protease specificity, Feature extraction, Peptide classification, Machine learning algorithms, Amino acids

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