Table 1.

Data for the four proteins studied

Protein	Pdb	N	Rng (Å)	kf (sec−1)	Texp (°C)
Acylphosphatase	1aps	98	12.6	2.3 × 10−1	28
Chymotrypsin inhibitor 2	2ci2	64	10.8	4.8 × 101	25
Spliceosomal protein U1A	1urn	96	12.2	3.2 × 102	25
λ-repressor	1lmb	80	11.5	1.1 × 104	25

Protein databank id, pdb; number of amino acids, N; radius of gyration, Rⁿ_g; and experimental folding rate in water, k_f, determined at temperature T_exp (Jackson and Fersht 1991; Silow and Oliveberg 1997; van Nuland et al. 1998; Myers and Oas 1999).