Ascorbate peroxidase
From Proteopedia
(Difference between revisions)
| Line 14: | Line 14: | ||
APX is part of plants antioxidant defense. APX converts H2O2 to water using ascorbate as an electron donor. APX is used in electron microscopy as a genetic tag which can be stained independently of light activation. | APX is part of plants antioxidant defense. APX converts H2O2 to water using ascorbate as an electron donor. APX is used in electron microscopy as a genetic tag which can be stained independently of light activation. | ||
| + | |||
| + | == Structural highlights == | ||
| + | |||
| + | The heme-containing active site of APX contains a His residue which coordinates with the heme and confers stability to the Fe state in the heme. | ||
==3D structures of ascorbate peroxidase== | ==3D structures of ascorbate peroxidase== | ||
Revision as of 10:36, 5 November 2015
Template:STRUCTURE 1oaf
Contents |
Function
Ascorbate peroxidase (APX) catalyzes the conversion of ascorbate and hydrogen peroxide to dehydroascorbate and water thus detoxifying hydrogen peroxide. APX is involved in the glutathione-ascorbate cycle. APX is accumulated in plants in response to heat and drought stress. APX contains a heme group.
Relevance
APX is part of plants antioxidant defense. APX converts H2O2 to water using ascorbate as an electron donor. APX is used in electron microscopy as a genetic tag which can be stained independently of light activation.
Structural highlights
The heme-containing active site of APX contains a His residue which coordinates with the heme and confers stability to the Fe state in the heme.
3D structures of ascorbate peroxidase
Updated on 05-November-2015
