It is also worth noting that coexpression networks built from randomly permuted expression vectors differ from the observed networks in not containing high-degree nodes (hubs) and thus cannot be claimed to possess scale-free properties with respect to their node degree distributions (data not shown).
While biological networks derived from high-throughput protein-protein interaction data, metabolism, or protein domains have been known for some time to possess scale-free topology (Barabasi and Oltvai, 2004; Titz et al. 2004), these studies have been carried out on networks making reference to structural properties of the biological entities.
12 An integrative analysis approach constructed an exon co-splicing network based on distances combined with matrix correlations and found that the co-splicing network was distinct and complementary to the co-expression network, although they both possess scale-free properties.
Our network also showed power law distribution (see Figures 5(b)- 6(b)) and hence it possesses "scale free" property.
Perhaps significantly, Oxyrrhis, which is a sister lineage to dinokaryotes (syn. "core" dinoflagellates), also possesses scales on the cell body and the flagella [11], [47] [49].
Most cypriniforms and characiforms possess cycloid scales (smooth, overlapping scales more or less circular in shape).
According to A. M. Best, the insurance-rating group, "the combined organization will possess significant scale and share in every market in which it operates".
Further, another common feature noted for genetic networks [ 35- 37] is that transcriptional regulatory networks possess the scale free nature of the network topologyd.
Orthodox Jews thus usually accept only fish with surficial ctenoid or cycloid types of scales and reject sturgeons, which possess ganoid scales (Donin 1972; Regenstein et al. 2003).
Just as the sharp rise in connectivity at a certain degree defines a degree "scale" that can be used to differentiate hubs from non-hubs, other centrality measures could possess characteristic scales in protein interaction networks.
