1.3.7.12: red chlorophyll catabolite reductase

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For detailed information about red chlorophyll catabolite reductase, go to the full flat file.

Word Map on EC 1.3.7.12

1.3.7.12

oxygenase

pheophorbide

pao

macrocycle

porphyrin

pheide

chlorophyllase

colorless

pheophytinase

phototoxic

nonfluorescent

light-dependent

ferredoxin-dependent

dark-induced

stay-green

bilin

degreening

chl-binding

postharvest

agriculture

Reaction

primary fluorescent chlorophyll catabolite

+ 2 oxidized ferredoxin [iron-sulfur] cluster =

+ 2 reduced ferredoxin [iron-sulfur] cluster + 2 H+

Synonyms

ACD2 protein, At-RCCR, AtRCCR, BoRCCR, BrRCCR, CaRCCR, EC 1.3.1.80, HvRCCR, PHAVU_008G280300g, RCC reductase, RCCR, RCCR-1, RCCR-2, red Chl catabolite reductase, red chlorophyll catabolite reductase, red-chlorophyll-catabolite reductase

ECTree

1 Oxidoreductases

1.3 Acting on the CH-CH group of donors

1.3.7 With an iron-sulfur protein as acceptor

1.3.7.12 red chlorophyll catabolite reductase

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Results	in table
2	Activating Compound
17	AA Sequence
1	Application
1	CAS Registry Number
15	Cloned(Commentary)
40	Cofactor
4	Crystallization (Commentary)
10	Expression
69	General Information
11	Inhibitors
1	KM Value [mM]
69	Localization
16	Metals/Ions
8	Molecular Weight [Da]
47	Natural Substrates/ Products (Substrates)
56	Organism
7	Oxidation Stability
4	Pathway
2	pH Optimum
1	Posttranslational Modification
15	Protein Variants
9	Purification (Commentary)
8	Reaction
2	Reaction Type
56	Reference
67	Source Tissue
2	Specific Activity [micromol/min/mg]
88	Substrates and Products (Substrate)
7	Subunits
83	Synonyms
1	Systematic Name
2	Temperature Optimum [°C]

Systematic Name

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Systematic Name on EC 1.3.7.12 - red chlorophyll catabolite reductase

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primary fluorescent chlorophyll catabolite + 2 oxidized ferredoxin [iron-sulfur] cluster = red chlorophyll catabolite + 2 reduced ferredoxin [iron-sulfur] cluster + 2 H+

The enzyme participates in chlorophyll degradation, which occurs during leaf senescence and fruit ripening in higher plants. The reaction requires reduced ferredoxin, which is generated from NADPH produced either through the pentose-phosphate pathway or by the action of photosystem I [1,2]. This reaction takes place while red chlorophyll catabolite is still bound to EC 1.14.15.17, pheophorbide a oxygenase [3]. Depending on the plant species used as the source of enzyme, one of two possible C-1 epimers of primary fluorescent chlorophyll catabolite (pFCC), pFCC-1 or pFCC-2, is normally formed, with all genera or species within a family producing the same isomer [3,4]. After modification and export, pFCCs are eventually imported into the vacuole, where the acidic environment causes their non-enzymic conversion into colourless breakdown products called non-fluorescent chlorophyll catabolites (NCCs) [2].