Pheophorbide a oxygenase
Pheophorbide A oxygenase (EC 1.14.12.20, pheide a monooxygenase, pheide a oxygenase, PAO) is an enzyme with systematic name pheophorbide-a,NADPH:oxygen oxidoreductase (biladiene-forming).[1][2][3][4][5][6] This enzyme catalyses the following chemical reaction
- Pheophorbide A + NADPH + H+ + O2 red chlorophyll catabolite + NADP+
Pheophorbide A oxygenase participates in chlorophyll degradation.
References
- ↑ Hörtensteiner, S., Wüthrich, K.L., Matile, P., Ongania, K.H. and Kräutler, B. (1998). "The key step in chlorophyll breakdown in higher plants. Cleavage of pheophorbide a macrocycle by a monooxygenase". J. Biol. Chem. 273 (25): 15335–15339. doi:10.1074/jbc.273.25.15335. PMID 9624113.
- ↑ Pružinská, A., Tanner, G., Anders, I., Roca, M. and Hörtensteiner, S. (2003). "Chlorophyll breakdown: pheophorbide a oxygenase is a Rieske-type iron-sulfur protein, encoded by the accelerated cell death 1 gene". Proc. Natl. Acad. Sci. USA 100 (25): 15259–15264. doi:10.1073/pnas.2036571100. PMC 299977. PMID 14657372.
- ↑ Chung, D.W., Pružinská, A., Hörtensteiner, S. and Ort, D.R. (2006). "The role of pheophorbide a oxygenase expression and activity in the canola green seed problem". Plant Physiol. 142 (1): 88–97. doi:10.1104/pp.106.084483. PMC 1557622. PMID 16844830.
- ↑ Rodoni, S., Mühlecker, W., Anderl, M., Kräutler, B., Moser, D., Thomas, H., Matile, P. and Hörtensteiner, S. (1997). "Chlorophyll breakdown in senescent chloroplasts. Cleavage of pheophorbide a in two enzymic steps". Plant Physiol. 115 (2): 669–676. doi:10.1104/pp.115.2.669. PMC 158527. PMID 12223835.
- ↑ Hörtensteiner, S. (2006). "Chlorophyll degradation during senescence". Annu. Rev. Plant Biol. 57: 55–77. doi:10.1146/annurev.arplant.57.032905.105212. PMID 16669755.
- ↑ Pružinská, A., Anders, I., Aubry, S., Schenk, N., Tapernoux-Lüthi, E., Müller, T., Kräutler, B. and Hörtensteiner, S. (2007). "In vivo participation of red chlorophyll catabolite reductase in chlorophyll breakdown". Plant Cell 19 (1): 369–387. doi:10.1105/tpc.106.044404. PMC 1820978. PMID 17237353.
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