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Your query returned 1 entry. Printable version
EC | 1.14.13.122 | ||||||||
Accepted name: | chlorophyllide-a oxygenase | ||||||||
Reaction: | chlorophyllide a + 2 O2 + 2 NADPH + 2 H+ = chlorophyllide b + 3 H2O + 2
NADP+ (overall reaction) (1a) chlorophyllide a + O2 + NADPH + H+ = 71-hydroxychlorophyllide a + H2O + NADP+ (1b) 71-hydroxychlorophyllide a + O2 + NADPH + H+ = chlorophyllide b + 2 H2O + NADP+ |
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Other name(s): | chlorophyllide a oxygenase; chlorophyll-b synthase; CAO | ||||||||
Systematic name: | chlorophyllide-a:oxygen 71-oxidoreductase | ||||||||
Comments: | Chlorophyll b is required for the assembly of stable light-harvesting complexes (LHCs) in the chloroplast of green algae, cyanobacteria and plants [2,3]. Contains a mononuclear iron centre [3]. The enzyme catalyses two successive hydroxylations at the 7-methyl group of chlorophyllide a. The second step yields the aldehyde hydrate, which loses H2O spontaneously to form chlorophyllide b [2]. Chlorophyll a and protochlorophyllide a are not substrates [2]. | ||||||||
Links to other databases: | BRENDA, EXPASY, Gene, KEGG, MetaCyc, CAS registry number: 216503-73-0 | ||||||||
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