7W26

monolignol ferulate transferase

Summary for 7W26

• Entry DOI: 10.2210/pdb7w26/pdb
• Descriptor: Ferulate monolignol transferase (2 entities in total)
• Functional Keywords: enzyme, plant protein, transferase
• Biological source: Angelica sinensis
• Total number of polymer chains: 2
• Total formula weight: 101623.95

Authors

Xi, L.,Shuliu, D.,Yue, F.,Yi, Z. (deposition date: 2021-11-22, release date: 2022-03-30, Last modification date: 2024-10-09)

Primary citation

Liu, X.,Dai, S.,Zhou, Y.,Liu, J.,Li, D.,Zhang, J.,Zhu, Y.,Zhao, Q.,Feng, Y.,Zhang, Y.
Crystal structure of the plant feruloyl-coenzyme A monolignol transferase provides insights into the formation of monolignol ferulate conjugates.
Biochem.Biophys.Res.Commun., 594:8-14, 2022

PubMed Abstract: Lignin is a highly complex phenolic polymer which is essential for plants, but also makes it difficult for industrial processing. Engineering lignin by introducing relatively labile linkages into the lignin backbone can render it more amenable to chemical depolymerization. It has been reported that introducing a feruloyl-coenzyme A monolignol transferase from Angelica sinensis (AsFMT) into poplar could incorporate monolignol ferulate conjugates (ML-FAs) into lignin polymers, suggesting a promising way to manipulate plants for readily deconstructing. FMT catalyzes a reaction between monolignols and feruloyl-CoA to produce ML-FAs and free CoA-SH. However, the mechanisms of substrate specificity and catalytic process of FMT remains poorly understood. Here we report the structure of AsFMT, which adopts a typical fold of BAHD acyltransferase family. Structural comparisons with other BAHD homologs reveal several unique structural features of AsFMT, different from those of the BAHD homologs. Further molecular docking studies showed that T375 in AsFMT may function as an oxyanion hole to stabilize the reaction intermediate and also proposed a role of H278 in the binding of the nucleophilic hydroxyl group of monolignols. Together, this study provides important structural insights into the reactions catalyzed by AsFMT and will shed light on its future application in lignin engineering.

PubMed: 35066379
DOI: 10.1016/j.bbrc.2022.01.037

Experimental method

X-RAY DIFFRACTION (2.43 Å)