ENZYME

ENZYME entry: EC 1.3.1.80

Accepted Name

Red chlorophyll catabolite reductase.

Alternative Name(s)

RCC reductase.

RCCR.

Red Chl catabolite reductase.

Reaction catalysed

Primary fluorescent chlorophyll catabolite + NADP(+) <=> red chlorophyll catabolite + NADPH

Comment(s)

Chlorophyll degradation is a characteristic symptom of leaf senescence and fruit ripening.
The reaction catalyzed by this enzyme requires reduced ferredoxin, which is generated either by NADPH through the pentose-phosphate pathway or by the action of photosystem I.
This reaction takes place without release of the substrate from EC 1.14.12.20.
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.
After modification and export, pFCCs are eventually imported into the vacuole, where the acidic environment causes their non-enzymic conversion into colorless breakdown products called non-fluorescent chlorophyll catabolites (NCCs).

Cross-references

BRENDA

EC2PDB

ExplorEnz

PRIAM enzyme-specific profiles

KEGG Ligand Database for Enzyme Nomenclature

IUBMB Enzyme Nomenclature