Insights into lignin primary structure and deconstruction from Arabidopsis thaliana COMT (caffeic acid O-methyl transferase) mutant Atomt1

…, CL Cardenas, KW Kim, D Zhang, LB Davin…

Index: Moinuddin, Syed G. A.; Jourdes, Michael; Laskar, Dhrubojyoti D.; Ki, Chanyoung; Cardenas, Claudia L.; Kim, Kye-Won; Zhang, Dianzhong; Davin, Laurence B.; Lewis, Norman G. Organic and Biomolecular Chemistry, 2010 , vol. 8, # 17 p. 3928 - 3946

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Citation Number: 18

Abstract

The Arabidopsis mutant Atomt1 lignin differs from native lignin in wild type plants, in terms of sinapyl (S) alcohol-derived substructures in fiber cell walls being substituted by 5- hydroxyconiferyl alcohol (5OHG)-derived moieties. During programmed lignin assembly, these engender formation of benzodioxane substructures due to intramolecular cyclization of their quinone methides that are transiently formed following 8-O-4′ radical-radical ...