NDLI: Feature Selection Approach for Quantitative Prediction of Transcriptional Activities

Content Provider	IEEE Xplore Digital Library
Author	Anand, A. Fogei, G. E. Ke Tang Suganthan, P.N.
Copyright Year	2006
Description	Author affiliation: Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore (Anand, A.)
Abstract	Protein-DNA interactions play a crucial role in transcriptional regulation and other biological processes. Quantitative predictive models of protein-DNA binding affinities can increase our understanding of molecular interaction and help validate putative transcription factor binding sites or other regulatory features. Such predictive models must take into account context-specific features associated with both DNA and proteins. Given the large complexity associated with such features, here we consider only the contextual features of DNA associated with binding affinity. Two types of features are considered in this paper: 1) features accounting for conformational and physico-chemical properties of nucleotide sequence and 2) another set of features accounting for conservation of evolutionary information in the form of position-specific weight matrices. A feature selection approach, named, leave-one-out sequential forward selection (LOOSFS), is presented. The feature selection method employs leave-one-out cross-validation error of the least square support vector machines (LS-SVM) to estimate the test error of quantitative prediction model. The method is used to identify important features possibly responsible for differences in transcriptional activities of 130 DNA sequences. These sequences were obtained by single base substitutions within promoter of the mouse beta-major globin gene. The selected features and predicted activity values correlate well with experimental results
Starting Page	1
Ending Page	6
File Size	142260
Page Count	6
File Format	PDF
ISBN	1424406234
DOI	10.1109/CIBCB.2006.331012
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-09-28
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Sequences DNA Biological system modeling Predictive models Stochastic processes Protein engineering Biological processes Testing Accuracy Biology computing
Content Type	Text
Resource Type	Article

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