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EC 1.3.1.80 Details
show Brenda entryEC number
1.3.1.80
Accepted name
red chlorophyll catabolite reductase
Reaction
primary fluorescent chlorophyll catabolite + NADP+ = red chlorophyll catabolite + NADPH + H+
Other name(s)
RCCR,
RCC reductase,
red Chl catabolite reductase
Systematic name
primary fluorescent chlorophyll catabolite:NADP+ oxidoreductase
Comment
Chlorophyll degradation is a characteristic symptom of leaf senescence and fruit ripening. The reaction catalysed by this enzyme requires reduced ferredoxin, which is generated either by NADPH through the pentose-phosphate pathway or by the action of photosystem I [1,2]. This reaction takes place without release of the substrate from EC 1.14.12.20, 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].
History
created 2007, deleted 2016
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1 Oxidoreductases
1.1.1.70 created 1965, deleted 1978 1.1.1.74 created 1972, deleted 1976 1.1.1.89 created 1972, deleted 1976 1.1.1.109 created 1972, deleted 1976 1.1.1.139 created 1972, deleted 1978 1.1.1.155 created 1976, deleted 2004 1.1.1.171 created 1978, deleted 1984 1.1.1.180 created 1983, deleted 1984 1.1.1.182 created 1983, deleted 1990 1.1.1.204 created 1972 as EC 1.2.1.37, transferred 1984 to EC 1.1.1.204, modified 1989, deleted 2004 1.1.1.242 created 1992, deleted 2001 1.1.1.253 created 1999, deleted 2003
1.1.2 With a cytochrome as acceptor
