What question did this study set out to answer?

Determine the nuclearity and electronic structure of the manganese active center in Lactobacillus plantarum catalase using electron paramagnetic resonance spectroscopy.

October 1, 1988Journal of the American Chemical Society

EPR spectral evidence for a dinuclear active site in the Lactobacillus plantarum manganese catalase

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Determine the nuclearity and electronic structure of the manganese active center in Lactobacillus plantarum catalase using electron paramagnetic resonance spectroscopy.
Applied low-temperature electron paramagnetic resonance (EPR) spectroscopy to analyze the catalytic metal site in purified manganese catalase.
Evaluated magnetic exchange interactions and spectral multiline patterns to assess coordination between manganese centers.
Observed characteristic multiline EPR spectral signals arising from magnetic exchange coupling between adjacent manganese ions.
Demonstrated that the active site comprises a coupled dinuclear manganese center rather than isolated mononuclear metal ions.

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Implication

Biophysical analysis demonstrates a dinuclear active site in Lactobacillus plantarum manganese catalase, indicating a paired-metal mechanism for cellular peroxide detoxification.

Cite This Study

Fronko et al. (1988) studied this question.

synapsesocial.com/papers/6a87bdd991c33485a1fe77b3 https://doi.org/10.1021/ja00230a055

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Implication

Biophysical analysis demonstrates a dinuclear active site in Lactobacillus plantarum manganese catalase, indicating a paired-metal mechanism for cellular peroxide detoxification.

EPR spectral evidence for a dinuclear active site in the Lactobacillus plantarum manganese catalase

Key Points

Discussion

Implication

Cite This Study

EPR spectral evidence for a dinuclear active site in the Lactobacillus plantarum manganese catalase

Key Points

Discussion

Implication

Cite This Study

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