R: Two versions of an E. Coli network dataset

ecoli {ergm} | R Documentation

## Two versions of an E. Coli network dataset

### Description

This network data set comprises two versions of a biological network in which the nodes are operons in Escherichia Coli and a directed edge from one node to another indicates that the first encodes the transcription factor that regulates the second.

### Usage

    data(ecoli)

### Details

The network object `ecoli1` is directed, with 423 nodes and 519 arcs. The object `ecoli2` is an undirected version of the same network, in which all arcs are treated as edges and the five isolated nodes (which exhibit only self-regulation in `ecoli1`) are removed, leaving 418 nodes.

### Licenses and Citation

When publishing results obtained using this data set, the original authors (Salgado et al, 2001; Shen-Orr et al, 2002) should be cited, along with this `R` package.

### Source

The data set is based on the RegulonDB network (Salgado et al, 2001) and was modified by Shen-Orr et al (2002).

### References

Salgado et al (2001), Regulondb (version 3.2): Transcriptional Regulation and Operon Organization in Escherichia Coli K-12, Nucleic Acids Research, 29(1): 72-74.

Shen-Orr et al (2002), Network Motifs in the Transcriptional Regulation Network of Escerichia Coli, Nature Genetics, 31(1): 64-68.

[Package ergm version 3.8.0 Index]