Table 1.

Natural substrates that interact with GroEL

NB, min*	GroES pattern matches
	6†	5	4
2	69 (27%)	181 (72%)	237 (94%)
4	12 (5%)	81 (32%)	199 (79%)

The complete list of 284 proteins, including 32 nonspecific interacting SPs, with GroES-type SPBM is given in Table 4, which is published as supporting information on the PNAS web site. The number of motifs is calculated without regard to the separation between them.

*Minimum number of SPBM found in the protein sequence.

^†Number of GroES-type binding contacts, N_C.