Title
Explore the hidden treasure in protein-protein interaction networks - an iterative model for predicting protein functions.
Abstract
Protein-protein interaction networks constructed by high throughput technologies provide opportunities for predicting protein functions. A lot of approaches and algorithms have been applied on PPI networks to predict functions of unannotated proteins over recent decades. However, most of existing algorithms and approaches do not consider unannotated proteins and their corresponding interactions in the prediction process. On the other hand, algorithms which make use of unannotated proteins have limited prediction performance. Moreover, current algorithms are usually one-off predictions. In this paper, we propose an iterative approach that utilizes unannotated proteins and their interactions in prediction. We conducted experiments to evaluate the performance and robustness of the proposed iterative approach. The iterative approach maximally improved the prediction performance by 50%-80% when there was a high proportion of unannotated neighborhood protein in the network. The iterative approach also showed robustness in various types of protein interaction network. Importantly, our iterative approach initially proposes an idea that iteratively incorporates the interaction information of unannotated proteins into the protein function prediction and can be applied on existing prediction algorithms to improve prediction performance.
Year
DOI
Venue
2015
10.1142/S0219720015500262
JOURNAL OF BIOINFORMATICS AND COMPUTATIONAL BIOLOGY
Keywords
Field
DocType
PPI network,algorithm,protein function prediction,iterative model
Data mining,Computer science,Robustness (computer science),Prediction algorithms,Artificial intelligence,Throughput,Protein protein interaction network,Iterative and incremental development,Interaction network,Interaction information,Bioinformatics,Protein function prediction,Machine learning
Journal
Volume
Issue
ISSN
13
SP5
0219-7200
Citations 
PageRank 
References 
2
0.37
18
Authors
2
Name
Order
Citations
PageRank
Derui Wang120.37
Jingyu Hou218116.93