The effect of changing the amount of external added Co(trp)n and pH values on the interaction of Cu2Zn2 SOD with organic metal compound (Cobalt(II)-Tryptophane) have been studied by means of ICP, VIS and measurement of enzyme activity. It has found that in aqueous solution, there exists a direct interaction of the metal ions of the active center in the metalloenzyme (Cu2Zn2 SOD) with external added Co(Trp)n. As a result, part of the metal ions in metalloenzyme were replaced and the corresponding metalloenzyme derivatives (Co(II)-substituted derivatives of SOD) were produced and the catalytic activity of enzyme were affected. It has also studied the intensity of interactions in different molar ratios (Cobalt(II)-Tryptophane) and pH values and got some results under the effect of corresponding factors.
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[Study on the interaction of copper-zinc superoxide dismutase with cobalt(II)-tryptophane by spectral analysis].
Guang Pu Xue Yu Guang Pu Fen Xi
June 2000
Department of Bioengineering, Dalian University of Technology, Department of Chemistry and Chemical Engineering, Dalian University, Dalian.
The effect of changing the amount of external added Co(trp)n and pH values on the interaction of Cu2Zn2 SOD with organic metal compound (Cobalt(II)-Tryptophane) have been studied by means of ICP, VIS and measurement of enzyme activity. It has found that in aqueous solution, there exists a direct interaction of the metal ions of the active center in the metalloenzyme (Cu2Zn2 SOD) with external added Co(Trp)n. As a result, part of the metal ions in metalloenzyme were replaced and the corresponding metalloenzyme derivatives (Co(II)-substituted derivatives of SOD) were produced and the catalytic activity of enzyme were affected.
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