testing sets
	Non OB_Fold negative samples	...	50 proteins that don't contain domain from OB-Fold family
	OB_Fold proteins		...	100 proteins from 5 different OB-Fold families. 
						OB-Fold family is specified in filename by inserting PFam name of the family as prefix.
	Telo_bind positive samples	...	50 proteins with Telo_bind domain