Table 2. Specificity of scoring matrices in detecting -barrel membrane proteins.

e-value	bbTMall	bbTMin	bbTMout	Blosum62	Phat7573	Slim161	Pam250
10	0	0	0	0	0	0	0
10	0	0	0	0	0	0	0
10	0	0	0	0	0	0	0
10	0	0	0	0	0	20	0
10	0	0	0	0	0	52	0
10	0	0	0	0	0	142	5
10	0	0	0	0	5	319	42
10	0	0	0	0	45	689	181

Cumulative number of random sequences incorrectly identified as homologs of -barrel membrane proteins at different -value resulting from Blast searches against a database of 362 randomized membrane proteins sequences using as queries the concatenated transmembrane segments of 20 template -barrel membrane proteins.