Title
GlycoMine: a machine learning-based approach for predicting N-, C- and O-linked glycosylation in the human proteome.
Abstract
Motivation: Glycosylation is a ubiquitous type of protein post-translational modification (PTM) in eukaryotic cells, which plays vital roles in various biological processes (BPs) such as cellular communication, ligand recognition and subcellular recognition. It is estimated that >50% of the entire human proteome is glycosylated. However, it is still a significant challenge to identify glycosylation sites, which requires expensive/laborious experimental research. Thus, bioinformatics approaches that can predict the glycan occupancy at specific sequons in protein sequences would be useful for understanding and utilizing this important PTM. Results: In this study, we present a novel bioinformatics tool called GlycoMine, which is a comprehensive tool for the systematic in silico identification of C-linked, N-linked, and O-linked glycosylation sites in the human proteome. GlycoMine was developed using the random forest algorithm and evaluated based on a well-prepared up-to-date benchmark dataset that encompasses all three types of glycosylation sites, which was curated from multiple public resources. Heterogeneous sequences and functional features were derived from various sources, and subjected to further two-step feature selection to characterize a condensed subset of optimal features that contributed most to the type-specific prediction of glycosylation sites. Five-fold cross-validation and independent tests show that this approach significantly improved the prediction performance compared with four existing prediction tools: NetNGlyc, NetOGlyc, EnsembleGly and GPP. We demonstrated that this tool could identify candidate glycosylation sites in case study proteins and applied it to identify many high-confidence glycosylation target proteins by screening the entire human proteome.
Year
DOI
Venue
2015
10.1093/bioinformatics/btu852
BIOINFORMATICS
Field
DocType
Volume
Human proteome project,Data mining,Glycosylation,Feature selection,Computer science,Java applet,Bioinformatics,Random forest,O-linked glycosylation,Glycan,In silico
Journal
31
Issue
ISSN
Citations 
9
1367-4803
20
PageRank 
References 
Authors
0.76
28
7
Name
Order
Citations
PageRank
Fuyi Li19711.25
Chen Li2686.46
Mingjun Wang3341.44
Geoffrey I. Webb43130234.10
Yang Zhang558047.16
James C Whisstock6937.90
Jiangning Song737441.93