Pheophorbidase
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| Pheophorbidase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC no. | 3.1.1.82 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| |||||||||
Pheophorbidase (EC 3.1.1.82, phedase, PPD) is an enzyme with systematic name pheophorbide-a hydrolase.[1][2][3] It catalyses the following reaction:
- pheophorbide a + H2O pyropheophorbide a + methanol + CO2 (overall reaction)
- (1a) pheophorbide a + H2O C-132-carboxypyropheophorbide a + methanol
- (1b) C-132-carboxypyropheophorbide a pyropheophorbide a + CO2 (spontaneous)
This enzyme participates in the chlorophyll degradation in higher plants and algae.
References
- ^ Suzuki Y, Doi M, Shioi Y (2002). "Two enzymatic reaction pathways in the formation of pyropheophorbide a". Photosynthesis Research. 74 (2): 225–33. doi:10.1023/A:1020919929608. PMID 16228561.
- ^ Suzuki Y, Amano T, Shioi Y (February 2006). "Characterization and cloning of the chlorophyll-degrading enzyme pheophorbidase from cotyledons of radish". Plant Physiology. 140 (2): 716–25. doi:10.1104/pp.105.071290. PMC 1361337. PMID 16384908.
- ^ Hörtensteiner S (2006). "Chlorophyll degradation during senescence". Annual Review of Plant Biology. 57: 55–77. doi:10.1146/annurev.arplant.57.032905.105212. PMID 16669755.
External links
- Pheophorbidase at the U.S. National Library of Medicine Medical Subject Headings (MeSH)
