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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 With NAD+ or NADP+ as acceptor
1.1.3.1 created 1961, deleted 1984 1.1.3.25 created 1986, deleted 2005 1.1.3.26 created 1989, deleted 2002 1.1.3.31 created 1992, deleted 2003 1.1.3.32 created 1999, deleted 2002 1.1.3.33 created 1999, deleted 2002 1.1.3.34 created 1999, deleted 2002 1.1.3.35 created 1999, deleted 2002 1.1.3.36 created 1999, deleted 2002 1.1.99.15 created 1978, deleted 1980 1.1.99.17 created 1982, deleted 2003 1.3.1.23 created 1972, deleted 2005 1.3.1.50 created 1992, deleted 1999 1.3.1.55 created 1999, deleted 2004
