View source for Phytochromobilin:ferredoxin oxidoreductase

{{infobox enzyme
| Name       = phytochromobilin:ferredoxin oxidoreductase
| EC_number  = 1.3.7.4
| CAS_number = 138263-99-7
| GO_code    = 0050619
| image      =
| width      = 
| caption    =  
}}
In [[enzymology]], a '''phytochromobilin:ferredoxin oxidoreductase''' ({{EC number|1.3.7.4}}) is an [[enzyme]] that [[catalysis|catalyzes]] the [[chemical reaction]]

:(3Z)-phytochromobilin + oxidized ferredoxin <math>\rightleftharpoons</math> biliverdin IXalpha + reduced ferredoxin

Thus, the two [[substrate (biochemistry)|substrates]] of this enzyme are [[(3Z)-phytochromobilin]] and oxidized [[ferredoxin]], whereas its two [[product (chemistry)|products]] are [[biliverdin IXalpha]] and reduced [[ferredoxin]].

This enzyme belongs to the family of [[oxidoreductase]]s, specifically those acting on the CH-CH group of donor with an iron-sulfur protein as acceptor.  The [[List of enzymes|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==
{{reflist|1}}
* {{cite journal | vauthors = Frankenberg N, Mukougawa K, Kohchi T, Lagarias JC | date = 2001 | title = Functional genomic analysis of the HY2 family of ferredoxin-dependent bilin reductases from oxygenic photosynthetic organisms | journal = Plant Cell  | volume = 13 | pages = 965&ndash;78  | pmid = 11283349 | doi = 10.1105/tpc.13.4.965 | issue = 4 | pmc = 135530 }}
* {{cite journal | vauthors = McDowell MT, Lagarias JC | date = 2001 | title = Purification and biochemical properties of phytochromobilin synthase from etiolated oat seedlings | journal = Plant Physiol.  | volume = 126 | pages = 1546&ndash;54  | pmid = 11500553 | doi = 10.1104/pp.126.4.1546 | issue = 4 | pmc = 117154 }}
* {{cite journal | vauthors = Terry MJ, Wahleithner JA, Lagarias JC | date = 1993 | title = Biosynthesis of the plant photoreceptor phytochrome | journal = Arch. Biochem. Biophys.  | volume = 306 | pages = 1&ndash;15  | pmid = 8215388 | doi = 10.1006/abbi.1993.1473 | issue = 1 }}

{{CH-CH oxidoreductases}}
{{Enzymes}}
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[[Category:EC 1.3.7]]
[[Category:Enzymes of unknown structure]]


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