An algorithm for network motif discovery in biological networks
by Guimin Qin; Lin Gao
International Journal of Data Mining and Bioinformatics (IJDMB), Vol. 6, No. 1, 2012

Abstract: Network motif discovery is a key problem in analysis of biological networks. In this paper, we present an efficient algorithm for detecting consensus motifs. First, we extend subgraph searching algorithm Enumerate Subgraphs (ESU) to efficiently search non-treelike subgraphs of which the probability of occurrence in random networks is small. Then, we classify isomorphic subgraphs into different groups. Finally, we use hierarchical clustering method to cluster subgraphs, and derive a consensus motif from the clusters. Our algorithm is applied to the Protein-Protein Interaction (PPI) networks and the transcriptional regulatory networks of E. coli and S. cerevisiae. The experiment results show that the algorithm can efficiently discover motifs, which are consistent with current biology knowledge. And, it can also detect several consensus motifs with a given size, which may help biologists go further into cellular process.

Online publication date: Wed, 17-Dec-2014

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Data Mining and Bioinformatics (IJDMB):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com