A review on direct electrochemistry of catalase for electrochemical sensors.

Sensors
Periasamy Arun PrakashShen-Ming Chen

Abstract

Catalase (CAT) is a heme enzyme with a Fe((III/II)) prosthetic group at its redox centre. CAT is present in almost all aerobic living organisms, where it catalyzes the disproportionation of H(2)O(2) into oxygen and water without forming free radicals. In order to study this catalytic mechanism in detail, the direct electrochemistry of CAT has been investigated at various modified electrode surfaces with and without nanomaterials. The results show that CAT immobilized on nanomaterial modified electrodes shows excellent catalytic activity, high sensitivity and the lowest detection limit for H(2)O(2) determination. In the presence of nanomaterials, the direct electron transfer between the heme group of the enzyme and the electrode surface improved significantly. Moreover, the immobilized CAT is highly biocompatible and remains extremely stable within the nanomaterial matrices. This review discusses about the versatile approaches carried out in CAT immobilization for direct electrochemistry and electrochemical sensor development aimed as efficient H(2)O(2) determination. The benefits of immobilizing CAT in nanomaterial matrices have also been highlighted.

References

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Citations

Sep 28, 2014·Biotechnology Advances·Balwinder Singh SoochMunish Puri
Nov 3, 2010·Biophysical Chemistry·Preety VatsyayanPranab Goswami
Nov 17, 2009·Biosensors & Bioelectronics·Parvaneh RahimiMohammad Reza Ganjali
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Apr 4, 2021·Sensors·Ricardo Matias TrujilloRossana Elena Madrid
May 1, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Félix Leao Rodríguez-FierrosIsrael Pérez-Torres

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Methods Mentioned

BETA
biosensing
circular dichroism
AFM
fluorescence spectroscopy
biosensors
biosensor
scanning electron microscopy

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