. 2015 Apr 23;16:10. doi: 10.1186/s12858-015-0039-4

Table 1.

Metal contents and specific activities of selected batches of recombinant QueD proteins

Protein ^a	Metal content (equivalents per protein monomer)	Specific activity (U mg ⁻¹ )
Ni-QueD	0.70 Ni, 0.20 Fe, 0.03 Co, 0.06 Zn, 0.01 Mn	137
Co-QueD	0.51 Co, 0.07 Ni, 0.05 Fe, 0.02 Zn, 0.01 Mn, 0.01 Cu	30
Mn-QueD	0.44 Mn, 0.12 Zn, 0.08 Fe, 0.05 Ni, 0.01 Co, 0.01 Cu	18
Fe-QueD	0.72 Fe, 0.05 Ni, 0.02 Zn, 0.02 Cu, 0.01 Mn	8

^aThe designations of the QueD metal forms refer to the metal of interest and do not imply exclusive occupancy of the protein with this metal.

Metal ions which contribute to ≥0.01 equivalents per protein monomer are listed.