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Membrane-binding domains define REMORIN phylogeny and provide a predicted structural basis for distinctive membrane nano-environments

Authors: Biermann, D., Gronnier, J.

Date: 2025-12-23 · Version: 1
DOI: 10.64898/2025.12.22.695504

Category: Plant Biology

Model Organism: General

AI Summary

The study reveals that REMORIN protein evolution is primarily driven by diversification of their conserved C-terminal domain, defining four major clades. Structural bioinformatics predicts a common membrane‑binding interface with diverse curvatures and lengths, and suggests that some REMs can form C‑terminal‑mediated oligomers, adding complexity to membrane organization.

REMORIN proteins C-terminal domain membrane nano-organization phylogenetic analysis structural bioinformatics

Impaired methyl recycling induces substantial shifts in sulfur utilization in Arabidopsis

Authors: Tremblay, B. J.-M., Adeel, S. A., Saechao, M., Dong, Y., Andrianasolo, E., Steele, J. M., Traa, A., Yogadasan, N., Waduwara-Jayabahu, I., Katzenback, B. A., Hell, R., Wirtz, M., Moffatt, B. A.

Date: 2025-03-13 · Version: 1
DOI: 10.1101/2025.03.09.642221

Category: Plant Biology

Model Organism: General

AI Summary

Reduced activity of methylthioadenosine (MTA) nucleosidase causes MTA over‑accumulation in reproductive tissues, leading to lowered cysteine, methionine, and S‑adenosylmethionine levels and altered sulfur and energy metabolism. These metabolic disturbances trigger misregulation of cell‑cycle progression, widespread down‑regulation of developmental genes, and genome‑wide changes in DNA methylation patterns, highlighting the extensive role of MTA recycling in plant growth and methyl‑index maintenance.

sulfur metabolism methylthioadenosine nucleosidase methionine/S‑adenosylmethionine biosynthesis DNA methylation reproductive development