Biology:Pheophorbidase
From HandWiki
| Pheophorbidase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC number | 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 | ||||||||
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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 [math]\displaystyle{ \rightleftharpoons }[/math] pyropheophorbide a + methanol + CO2 (overall reaction)
- (1a) pheophorbide a + H2O [math]\displaystyle{ \rightleftharpoons }[/math] C-132-carboxypyropheophorbide a + methanol
- (1b) C-132-carboxypyropheophorbide a [math]\displaystyle{ \rightleftharpoons }[/math] pyropheophorbide a + CO2 (spontaneous)
This enzyme participates in the chlorophyll degradation in higher plants and algae.
References
- ↑ "Two enzymatic reaction pathways in the formation of pyropheophorbide a". Photosynthesis Research 74 (2): 225–33. 2002. doi:10.1023/A:1020919929608. PMID 16228561.
- ↑ "Characterization and cloning of the chlorophyll-degrading enzyme pheophorbidase from cotyledons of radish". Plant Physiology 140 (2): 716–25. February 2006. doi:10.1104/pp.105.071290. PMID 16384908.
- ↑ "Chlorophyll degradation during senescence". Annual Review of Plant Biology 57: 55–77. 2006. doi:10.1146/annurev.arplant.57.032905.105212. PMID 16669755.
External links
- Pheophorbidase at the US National Library of Medicine Medical Subject Headings (MeSH)
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