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. Author manuscript; available in PMC: 2010 Feb 1.
Published in final edited form as: J Biol Inorg Chem. 2008 Oct 16;14(2):179–191. doi: 10.1007/s00775-008-0436-x

Table 1.

Dissociation constants at 25°C for ligand complexes of NP1 and H60C_NP

NP1 H60C_NP1
Histamine 17 ± 2 × 10-9 M 40 ± 10 × 10-6 M
Imidazole 255 ± 5 × 10-9 M 120 ± 10 × 10-6 M
N-(n-Butyl)imidazole 52 ± 3 × 10-9 M 7 ± 1 × 10-6 M
4-Methylimidazole 182 ± 4 ×10-9 M 560 ± 50 × 10-6 M