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Predicting protein structural class by incorporating patterns of over-represented k-mers into the general form of Chou's PseAAC.

Identifieur interne : 001E08 ( PubMed/Corpus ); précédent : 001E07; suivant : 001E09

Predicting protein structural class by incorporating patterns of over-represented k-mers into the general form of Chou's PseAAC.

Auteurs : Yu-Fang Qin ; Chun-Hua Wang ; Xiao-Qing Yu ; Jie Zhu ; Tai-Gang Liu ; Xiao-Qi Zheng

Source :

RBID : pubmed:22316305

English descriptors

Abstract

Computational prediction of protein structural class based on sequence data remains a challenging problem in current protein science. In this paper, a new feature extraction approach based on relative polypeptide composition is introduced. This approach could take into account the background distribution of a given k-mer under a Markov model of order k-2, and avoid the curse of dimensionality with the increase of k by using a T-statistic feature selection strategy. The selected features are then fed to a support vector machine to perform the prediction. To verify the performance of our method, jackknife cross-validation tests are performed on four widely used benchmark datasets. Comparison of our results with existing methods shows that our method provides satisfactory performance for structural class prediction.

DOI: 10.2174/092986612799789350
PubMed: 22316305

Links to Exploration step

pubmed:22316305

Le document en format XML

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