Table 2. Performance of alignment algorithms for 4-way alignments of synthetic PPI networks (CG = crystal growth model, DMC = duplication-mutation-complementation model, DMR = duplication with random mutations model).

	CG			DMC			DMR
	SPE	CN	MNE	SPE	CN	MNE	SPE	CN	MNE
GASOLINE	92.75%	10400	0.059	87.62%	10421	0.101	88.74%	9934	0.091
SMETANA	90.41%	14154	0.073	91.06%	15495	0.07	93.15%	15255	0.055
NetworkBLAST-M	31.72%	9747	0.639	44.01%	7336	0.514	56.06%	6916	0.395
IsoRankN	62.46%	5793	0.302	74.83%	8856	0.195	74.64%	9077	0.195