. Author manuscript; available in PMC: 2020 Aug 1.

Published in final edited form as: Int J Biol Macromol. 2019 May 10;134:445–457. doi: 10.1016/j.ijbiomac.2019.05.060

Table 1.

Stern-Volmer constant for the quenching of HSA by various PP. Under the assumption of static quenching these constants are identical to the apparent binding constant.

Quencher	K_S-V [K_b]	Atomic radius/ Coordination number
PPIX	0.85 ± 0.08 × 10⁶ M⁻¹	0
ZnPPIX	0.11 ± 0.05 × 10⁶ M⁻¹	1.31/4
FePPIX	1.55 ± 0.09 × 10⁶ M⁻¹	1.25/6 or 4
MgPPIX	0.60 ± 0.06 × 10⁶ M⁻¹	1.30/6
MnPPIX	2.13 ± 0.07 × 10⁶ M⁻¹	1.39/6
SnPPIX	0.43 ± 0.07 × 10⁶ M⁻¹	1.45/4