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Open Access Publications from the University of California

Two members of the DUF579 family are responsible for arabinogalactan methylation in Arabidopsis.

  • Author(s): Temple, Henry
  • Mortimer, Jenny C
  • Tryfona, Theodora
  • Yu, Xiaolan
  • Lopez-Hernandez, Federico
  • Sorieul, Mathias
  • Anders, Nadine
  • Dupree, Paul
  • et al.

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All members of the DUF579 family characterized so far have been described to affect the integrity of the hemicellulosic cell wall component xylan: GXMs are glucuronoxylan methyltransferases catalyzing 4-O-methylation of glucuronic acid on xylan; IRX15 and IRX15L, although their enzymatic activity is unknown, are required for xylan biosynthesis and/or xylan deposition. Here we show that the DUF579 family members, AGM1 and AGM2, are required for 4-O-methylation of glucuronic acid of a different plant cell wall component, the highly glycosylated arabinogalactan proteins (AGPs).

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