Assessing a Mixture Model for Clustering with the Integrated Completed Likelihood
IEEE Transactions on Pattern Analysis and Machine Intelligence
Handbook of Mathematical Functions, With Formulas, Graphs, and Mathematical Tables,
Handbook of Mathematical Functions, With Formulas, Graphs, and Mathematical Tables,
Pattern Recognition and Machine Learning (Information Science and Statistics)
Pattern Recognition and Machine Learning (Information Science and Statistics)
A Hidden Markov Model applied to the protein 3D structure analysis
Computational Statistics & Data Analysis
International Journal of Data Mining and Bioinformatics
Prediction of Protein Secondary Structure with two-stage multi-class SVMs
International Journal of Data Mining and Bioinformatics
Exploring alternative knowledge representations for protein secondary-structure prediction
International Journal of Data Mining and Bioinformatics
PRTAD: A database for protein residue torsion angle distributions
International Journal of Data Mining and Bioinformatics
Mining the Protein Data Bank with CReF to predict approximate 3-D structures of polypeptides
International Journal of Data Mining and Bioinformatics
International Journal of Data Mining and Bioinformatics
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In protein structure prediction, backbone fragment bias information can narrow down the conformational space of the whole polypeptide chain significantly. Unlike existing methods that use fragments as building blocks, the paper presents a probabilistic sampling approach for protein backbone torsion angles by modelling angular correlation of Φ, ψ with a directional statistics distribution. Given a protein sequence and secondary structure information, this method samples backbone fragments conformations by using a backtrack sampling algorithm for the hidden Markov model with multiple inputs and a single output. The proposed approach is applied to a fragment library, and some well-known structural motifs are sampled very well on the optimal path. Computational results show that the method can help to obtain native-like backbone fragments conformations.