In enzymology, a phytochromobilin:ferredoxin oxidoreductase (EC 1.3.7.4) is an enzyme that catalyzes the chemical reaction
| phytochromobilin:ferredoxin oxidoreductase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC no. | 1.3.7.4 | ||||||||
| CAS no. | 138263-99-7 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| Gene Ontology | AmiGO / QuickGO | ||||||||
| |||||||||
- (3Z)-phytochromobilin + oxidized ferredoxin biliverdin IXalpha + reduced ferredoxin
Thus, the two substrates of this enzyme are (3Z)-phytochromobilin and oxidized ferredoxin, whereas its two products are biliverdin IXalpha and reduced ferredoxin.
This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-CH group of donor with an iron-sulfur protein as acceptor. The systematic name of this enzyme class is (3Z)-phytochromobilin:ferredoxin oxidoreductase. Other names in common use include HY2, PPhiB synthase, and phytochromobilin synthase. This enzyme participates in porphyrin and chlorophyll metabolism.
References
edit- Frankenberg N, Mukougawa K, Kohchi T, Lagarias JC (2001). "Functional genomic analysis of the HY2 family of ferredoxin-dependent bilin reductases from oxygenic photosynthetic organisms". Plant Cell. 13 (4): 965–78. doi:10.1105/tpc.13.4.965. PMC 135530. PMID 11283349.
- McDowell MT, Lagarias JC (2001). "Purification and biochemical properties of phytochromobilin synthase from etiolated oat seedlings". Plant Physiol. 126 (4): 1546–54. doi:10.1104/pp.126.4.1546. PMC 117154. PMID 11500553.
- Terry MJ, Wahleithner JA, Lagarias JC (1993). "Biosynthesis of the plant photoreceptor phytochrome". Arch. Biochem. Biophys. 306 (1): 1–15. doi:10.1006/abbi.1993.1473. PMID 8215388.
