Bio-knowledge-based filters improve residue-residue contact prediction accuracy

Bioinformatics
Pawel P WozniakMalgorzata Kotulska

Abstract

Residue-residue contact prediction through direct coupling analysis has reached impressive accuracy, but yet higher accuracy will be needed to allow for routine modelling of protein structures. One way to improve the prediction accuracy is to filter predicted contacts using knowledge about the particular protein of interest or knowledge about protein structures in general. We focus on the latter and discuss a set of filters that can be used to remove false positive contact predictions. Each filter depends on one or a few cut-off parameters for which the filter performance was investigated. Combining all filters while using default parameters resulted for a test set of 851 protein domains in the removal of 29% of the predictions of which 92% were indeed false positives. All data and scripts are available at http://comprec-lin.iiar.pwr.edu.pl/FPfilter/. Supplementary data are available at Bioinformatics online.

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Citations

Jul 23, 2019·PeerJ·Adam J Hockenberry, Claus O Wilke

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