Types of motifs of order n = 2 and n = 3 for the mixed transcription and protein-protein network. The motifs shown here are those whose abundance patterns in the real network of the yeast Saccharomyces cerevisiae strongly deviate from the typical values found in randomized versions thereof. The green directed links with arrows represent transcriptional links, while two dashed lines with contacting circles represent an undirected protein-protein interaction.
Mazurie et al. Genome Biology 2005 6:R35 doi:10.1186/gb-2005-6-4-r35