Efficiency of the immunome protein interaction network increases during evolution

Immunome Research

Table 1 Network parameters for the human immunome at the evolutionary levels of the corresponding subnetworks.

Evolutionary level	Taxon name	Nodes	Edges	α^a	SE(α)^a	-2logΛ^a
0	Homo sapiens	584	1349	2.226	0.0677	1713
1	Mammalia ancestors	577	1335	2.235	0.0683	1699
2	Amniota ancestors	453	1039	2.260	0.0790	1304
3	Tetrapoda ancestors	357	770	2.332	0.0950	970
4	Vertebrata ancestors	354	761	2.319	0.0950	957
5	Chordata ancestors	159	254	2.607	0.1924	303
6	Coelomata	145	223	2.725	0.2144	267
7	Bilateria ancestors	106	124	3.478	0.4107	115
8	Fungi/Metazoa ancestors	62	57	4.376	0.9953	29
9	Eukaryota ancestors	48	39	4.585	1.5668	12

^aEstimates for power law exponent (α) of the degree distributions are presented with the standard error [SE(α)] together and the log-likelihood ratios (-2logΛ) of the power law degree distributions.