Table 1. Dependence of Crotamine - d(CCG)₈C Association Constants on [NaCl]^*.

[NaCl], M	[Na+], M	K, M−1
0.010	0.020	2.1±0.2×106
0.050	0.060	3.1±0.3×105
0.075	0.085	1.1±0.1×105
0.100	0.110	4.3±0.4×104

^*Titrations were performed in 0.02 M Hepes, pH. 7.7, 0.0001 M Na₂EDTA, and the indicated concentration of NaCl. The [Na⁺] includes the contribution from the buffer (0.01 M).