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Article

Atypical endo-β-1,4-mannanases are necessary for normal glucomannan synthesis in Arabidopsis.

Plant physiology - 6 May 2026

Kikuchi Aina, Sato Eriko, Yoshimi Yoshihisa, Takasaki Hironori, Nishigaki Naho, Atsuzawa Kimie, Kaneko Yasuko, Yamaguchi Masatoshi, Takahashi Daisuke, Dupree Paul, Kotake Toshihisa

Abstract excerpt

The molecular mechanisms underlying the synthesis of large cell wall polysaccharides in plant cells are not fully understood. Here, we report that 2 atypical endo-β-1,4-mannanases (MANs), which are not secreted and do not degrade glucomannan in the cell wall, play a role in glucomannan synthesis. Among the 6 MANs in Arabidopsis (Arabidopsis thaliana), AtMAN2 and AtMAN5 contain a transmembrane domain at their...

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PMID: 42008521
DOI: 10.1093/plphys/kiag174
PMCID: PMC13181414

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