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. 2017 Oct 13;56(21):13293–13299. doi: 10.1021/acs.inorgchem.7b02073

Table 2. Absorbance Maxima of DTB-SQ Absorption Band Measured with LmrR_M89X and LmrR_M89X_V15E_F93D, in the Presence of Transition-Metal Ions.

  M89X
 M89X_V15E_F93D
  λmax(1) (nm) λmax(2) (nm) λmax(1) (nm) λmax(2) (nm)
Cu(II) 764 ∼850 765 ∼850
Zn(II) 739 789 733 801
Co(II) 733 780 732 788
Ni(II) 758 813 764 817
Fe(II)a n.d. n.d. 745 803
a

Protein incubated with an excess of Fe(II) followed by dialysis to remove the excess of metal ions.