|Superclasses:||Reactions Classified By Conversion Type → Simple Reactions → Chemical Reactions|
|Reactions Classified By Substrate → Small-Molecule Reactions|
In Pathway: chlorophyll a degradation II
The direction shown, i.e. which substrates are on the left and right sides, is in accordance with the direction in which it was curated.
Most BioCyc compounds have been protonated to a reference pH value of 7.3. Please see the PGDB Concepts Guide for more information.
Mass balance status: Balanced.
Standard Gibbs Free Energy (ΔrG'° in kcal/mol): -10.110001 [Latendresse13]
Dechelation of Mg2+ in chlorophyll a to form pheophytin a has been observed in parsley leaves [AmirShapira87], olives [MinguezMosquera94], and cabbage in coleslaw [Heaton96]. Dephytolization to form pheophorbide a was observed in coleslaw cabbage, but not in olives or parsley.
Unification Links: KEGG:R08584
AmirShapira87: Amir-Shapira D, Goldschmidt EE, Altman A (1987). "Chlorophyll catabolism in senescing plant tissues: In vivo breakdown intermediates suggest different degradative pathways for Citrus fruit and parsley leaves." Proc Natl Acad Sci U S A 84(7);1901-1905. PMID: 16593821
MinguezMosquera94: Minguez-Mosquera MI, Grandul-Rojas BG, Minguez-Mosquera J (1994). "Mechanism and kinetics of the degradation of chlorophylls during the processing of green table olives." Journal of Agricultural and Food Chemistry 42:1089-1095.
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