Table 2.

Most common PDB header and SCOP fold for IDSB concentrations.

p[IDSB]	Header	Number of chains	% Total	SCOP fold	Number of chains	% of Found
0.7	Cell adhesion	3	60	Integrin-binding RGD peptide	2	40
0.8	Toxin	8	73	Conotoxins	5	71
0.9	Toxin	12	52	Knottins	10	50
1	Toxin	21	40	Knottins	29	62
1.1	Toxin	19	25	Knottins	28	46
1.2	Toxin	13	22	Knottins	18	38
1.3	Toxin	8	13	Knottins
	Growth factor	10	16		9	20
1.4	Hydrolase	6	12	Bifunctional inhibitor/lipid-transfer protein/seed storage 2S albumin
	Blood clotting	3	6		3	8
	Immune system	3	6
1.5	Immune system	6	12	IL8-like
	Hydrolase	5	10		4	14
	Transferase	5	10
1.6	Cytokine	11	14	IL8-like
	Hydrolase	16	21		7	12
1.7	Hydrolase	16	23	C-type lectin-like	5	8
				Trypsin-like serine proteases	5	8
1.8	Immune system	7	13	4-helical cytokines
	Hydrolase	7	13		5	15
1.9	Hydrolase	26	28	Trypsin-like serine proteases	7	13
2	Immune system	18	14	Immunoglobulin-like β-sandwich
	Hydrolase	31	24		16	20
2.1	Hydrolase	13	16	Immunoglobulin-like β-sandwich	9	16
2.2	Hydrolase	18	23	Lipocalins	6	10
2.3	Hydrolase	17	21	Concanavalin A-like lectins/glucanases	5	10
2.4	Hydrolase	26	38	Concanavalin A-like lectins/glucanases	4	10
				α/β-Hydrolases	4	10
2.5	Hydrolase	19	32	TIM β/α-barrel	4	11
2.6	Hydrolase	9	26	6/7-bladed β-propeller	2	13
2.7	Oxidoreductase	11	35
	Hydrolase	6	19
2.8	Toxin	2	15
	Hydrolase	2	15
	Oxidoreductase	2	15
	Glycosyltransferase	2	15
2.9	Oxidoreductase	3	38

“Number” represents the number of the chains in a concentration range having a particular header or fold. Concentration ranges with fewer than five chains were not shown. When two headers or folds were the most common in a concentration range, both were shown. As some of the chains were not found in the SCOP database, the “% of found” is the percentage of chains having a fold, in the SCOP database, in the concentration range.