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词条 Chlorophyllide-a oxygenase
释义

  1. References

  2. External links

{{Infobox enzyme
| Name = Chlorophyllide-a oxygenase
| EC_number = 1.14.13.122
| CAS_number = 216503-73-0
| IUBMB_EC_number = 1/14/13/122
| GO_code =
| image =
| width =
| caption =
}}Chlorophyllide-a oxygenase ({{EC number|1.14.13.122}}, chlorophyllide a oxygenase, chlorophyll-b synthase, CAO) is an enzyme with systematic name chlorophyllide-a:oxygen 7-oxidoreductase.[1][2][3][4] This enzyme catalyses the following chemical reaction

(1) chlorophyllide a + O2 + NADPH + H+ 7-hydroxychlorophyllide a + H2O + NADP+

(2) 7-hydroxychlorophyllide a + O2 + NADPH + H+ chlorophyllide b + 2 H2O + NADP+

This enzyme contains a mononuclear iron centre.

References

1. ^{{cite journal | vauthors = Espineda CE, Linford AS, Devine D, Brusslan JA | title = The AtCAO gene, encoding chlorophyll a oxygenase, is required for chlorophyll b synthesis in Arabidopsis thaliana | journal = Proceedings of the National Academy of Sciences of the United States of America | volume = 96 | issue = 18 | pages = 10507–11 | date = August 1999 | pmid = 10468639 | pmc = 17919 | doi = 10.1073/pnas.96.18.10507 }}
2. ^{{cite journal | vauthors = Oster U, Tanaka R, Tanaka A, Rüdiger W | title = Cloning and functional expression of the gene encoding the key enzyme for chlorophyll b biosynthesis (CAO) from Arabidopsis thaliana | journal = The Plant Journal | volume = 21 | issue = 3 | pages = 305–10 | date = February 2000 | pmid = 10758481 | doi = 10.1046/j.1365-313x.2000.00672.x }}
3. ^{{cite journal | vauthors = Eggink LL, LoBrutto R, Brune DC, Brusslan J, Yamasato A, Tanaka A, Hoober JK | title = Synthesis of chlorophyll b: localization of chlorophyllide a oxygenase and discovery of a stable radical in the catalytic subunit | journal = BMC Plant Biology | volume = 4 | pages = 5 | date = April 2004 | pmid = 15086960 | pmc = 406501 | doi = 10.1186/1471-2229-4-5 }}
4. ^{{cite journal | vauthors = Porra RJ, Schäfer W, Cmiel E, Katheder I, Scheer H | title = The derivation of the formyl-group oxygen of chlorophyll b in higher plants from molecular oxygen. Achievement of high enrichment of the 7-formyl-group oxygen from 18O2 in greening maize leaves | journal = European Journal of Biochemistry | volume = 219 | issue = 1-2 | pages = 671–9 | date = January 1994 | pmid = 8307032 | doi = 10.1111/j.1432-1033.1994.tb19983.x }}

External links

  • {{MeshName|Chlorophyllide-a+oxygenase}}
{{Dioxygenases}}{{Enzymes}}{{Portal bar|Molecular and Cellular Biology|border=no}}

1 : EC 1.14.13

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