Interaction of Small Zinc Complexes with Globular Proteins and Free Tryptophan

Table 2

Summary of the Stern-Volmer constant, , and the bimolecular quenching constant, , for BSA, HSA, lysozyme, and free Trp.

Complex	BSA		HSA		Lysozyme		Free Trp
	/M^−1 (×10^4)	/M^−1 s^−1 (×10^12)	/M^−1 (×10^4)	/M^−1 s^−1 (×10^12)	/M^−1 (×10^4)	/M^−1 s^−1 (×10^12)	/M^−1 (×10^4)	/M^−1 s^−1 (×10^12)
3	1.3	1.3	1.4	1.4	1.5	1.5	—	—
4	—	—	0.94	0.94	0.69	0.69	3.0	3.0
5	2.0	2.0	2.4	2.4	0.62	0.62	—	—
6	0.22	0.22	—	—	—	—	—	—