Physiological function and regulation of ascorbate peroxidase isoforms
Kazuya Yoshimura,
Takahiro Ishikawa
Abstract:Ascorbate peroxidase (APX) reduces H2O2 to H2O by utilizing ascorbate as specific electron donor and constitutes the ascorbate-glutathione cycle in organelles of plants including chloroplasts, cytosol, mitochondria, and peroxisomes. It has been almost 40 years since APX was discovered as an important plant-specific H2O2 scavenging enzyme, during which time many research groups have conducted molecular physiological analyses. It is now clear that APX isoforms function not only just as antioxidant enzymes but al… Show more
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