词条 | Chlorophyll(ide) b reductase |
释义 |
| Name = Chlorophyll(ide) b reductase | EC_number = 1.1.1.294 | CAS_number = | IUBMB_EC_number = 1/1/1/294 | GO_code = | image = | width = | caption = }}Chlorophyll(ide) b reductase ({{EC number|1.1.1.294}}, chlorophyll b reductase, Chl b reductase) is an enzyme with systematic name 71-hydroxychlorophyllide-a:NAD(P)+ oxidoreductase.[1][2][3][4][5] This enzyme catalyses the following chemical reaction 71-hydroxychlorophyllide a + NAD(P)+ chlorophyllide b + NAD(P)H + H+ This enzyme carries out the first step in the conversion of chlorophyll b to chlorophyll a. It is involved in chlorophyll degradation, which occurs during leaf senescence, and it also forms part of the chlorophyll cycle, which interconverts chlorophyll a and b in response to changing light conditions. References1. ^{{cite journal | vauthors = Scheumann V, Ito H, Tanaka A, Schoch S, Rüdiger W | title = Substrate specificity of chlorophyll(ide) b reductase in etioplasts of barley (Hordeum vulgare L.) | journal = European Journal of Biochemistry | volume = 242 | issue = 1 | pages = 163–70 | date = November 1996 | pmid = 8954166 | doi = 10.1111/j.1432-1033.1996.0163r.x }} 2. ^{{cite journal | vauthors = Scheumann V, Schoch S, Rüdiger W | title = Chlorophyll a formation in the chlorophyll b reductase reaction requires reduced ferredoxin | journal = The Journal of Biological Chemistry | volume = 273 | issue = 52 | pages = 35102–8 | date = December 1998 | pmid = 9857045 | doi = 10.1074/jbc.273.52.35102 }} 3. ^{{cite journal | vauthors = Hörtensteiner S | title = Chlorophyll degradation during senescence | journal = Annual Review of Plant Biology | volume = 57 | pages = 55–77 | year = 2006 | pmid = 16669755 | doi = 10.1146/annurev.arplant.57.032905.105212 }} 4. ^{{cite journal | vauthors = Ito H, Ohtsuka T, Tanaka A | title = Conversion of chlorophyll b to chlorophyll a via 7-hydroxymethyl chlorophyll | journal = The Journal of Biological Chemistry | volume = 271 | issue = 3 | pages = 1475–9 | date = January 1996 | pmid = 8576141 | doi = 10.1074/jbc.271.3.1475 }} 5. ^{{cite journal | vauthors = Rüdiger W | title = Biosynthesis of chlorophyll b and the chlorophyll cycle | journal = Photosynthesis Research | volume = 74 | issue = 2 | pages = 187–93 | year = 2002 | pmid = 16228557 | doi = 10.1023/A:1020959610952 }} External links
1 : EC 1.1.1 |
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