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Phytochromobilin:ferredoxin oxidoreductase

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phytochromobilin:ferredoxin oxidoreductase
Identifiers
EC no.1.3.7.4
CAS no.138263-99-7
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IntEnzIntEnz view
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MetaCycmetabolic pathway
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In enzymology, a phytochromobilin:ferredoxin oxidoreductase (EC 1.3.7.4) is an enzyme that catalyzes the chemical reaction

(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

  • 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.