Volume 37, Issue 11 pp. 759-766

Fast Fourier Transform-based Support Vector Machine for Prediction of G-protein Coupled Receptor Subfamilies

Yan-Zhi GUO

Yan-Zhi GUO

College of Chemistry, Sichuan University, Chengdu 610064, China

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Meng-Long LI

Corresponding Author

Meng-Long LI

College of Chemistry, Sichuan University, Chengdu 610064, China

*Tel, 86-28-89005151; Fax, 86-28-85412356; E-mail, [email protected]Search for more papers by this author
Ke-Long WANG

Ke-Long WANG

College of Chemistry, Sichuan University, Chengdu 610064, China

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Zhi-Ning WEN

Zhi-Ning WEN

College of Chemistry, Sichuan University, Chengdu 610064, China

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Min-Chun LU

Min-Chun LU

College of Chemistry, Sichuan University, Chengdu 610064, China

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Li-Xia LIU

Li-Xia LIU

College of Chemistry, Sichuan University, Chengdu 610064, China

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Lin JIANG

Lin JIANG

College of Chemistry, Sichuan University, Chengdu 610064, China

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First published: 15 November 2005
Citations: 3

Abstract

Abstract Although the sequence information on G-protein coupled receptors (GPCRs) continues to grow, many GPCRs remain orphaned (i.e. ligand specificity unknown) or poorly characterized with little structural information available, so an automated and reliable method is badly needed to facilitate the identification of novel receptors. In this study, a method of fast Fourier transform-based support vector machine has been developed for predicting GPCR subfamilies according to protein's hydrophobicity. In classifying Class B, C, D and F subfamilies, the method achieved an overall Matthew's correlation coefficient and accuracy of 0.95 and 93.3%, respectively, when evaluated using the jackknife test. The method achieved an accuracy of 100% on the Class B independent dataset. The results show that this method can classify GPCR subfamilies as well as their functional classification with high accuracy. A web server implementing the prediction is available at http://chem.scu.edu.cn/blast/Pred-GPCR.

Edited by Lu-Hua LAI

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