Words similar to zn

Example sentences for: zn

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There is also another possible explanation for the varied number of tetracysteine motifs and requirement of Zn(II) for relaxation activity found in different type IA topoisomerases.
The inclusion of 100 μM ZnCl 2 in the assay buffer resulted in slightly lower values of K m and higher values for k cat [ 36 ] . The inclusion of higher concentrations of Zn(II) did not further affect the steady-state kinetic constants.
Apparently, the purified, recombinant enzyme does not bind its full complement of Zn(II); therefore, 100 μM Zn(II) was included in all subsequent kinetic studies.
The structure of this 67 kDa domain has been determined by X-ray crystallography to be torus-like, indicating the need for protein conformational change for strand passage to take place after DNA cleavage [ 4 ] . Relaxation activity requires the presence of the Zn(II) binding tetracysteine motifs [ 5 ] found between the 67 kDa N-terminal domain (Top67) and the 14 kDa C-terminal single-stranded DNA binding domain (Figure 1).
If the concentration of total organochlorine pesticides exceeds 0.l5 µg/g wet weight, or the concentration of the total organochlorine pesticides plus PCBs exceeds 0.30 µg/g wet weight, or toxic metals (Al, As, Cr, Co, Cu, Pb, Ni, Zn, expressed as total metal) exceed 20 µg/g wet weight, the food should not be used (for analytical methods see AOAC, 1990 and USDA, 1989).