Two members of the DUF579 family are responsible for arabinogalactan methylation in Arabidopsis
Two members of the DUF579 family are responsible for arabinogalactan methylation in Arabidopsis
复制标题
DUF579 家族的两个成员负责拟南芥中的阿拉伯半乳聚糖甲基化
作者：
Henry Temple;J. Mortimer;T. Tryfona;Xiaolan Yu;Federico Lopez;Mathias Sorieul;Nadine Anders;P. Dupree
迄今为止所鉴定的DUF579家族的所有成员都被描述为影响半纤维素细胞壁成分木聚糖的完整性：GXMs是葡萄糖醛酸甲基转移酶，催化葡萄糖醛酸在木聚糖上的4‐o甲基化；IRX15和IRX15L，虽然它们的酶活性未知，但它们是木聚糖生物合成和/或木聚糖沉积所必需的。在这里，我们发现DUF579家族成员AGM1和AGM2是一种不同植物细胞壁成分葡糖醛酸的4‐0甲基化所必需的，这种成分是高度糖基化的阿拉伯半乳糖蛋白（AGPs）。
Abstract 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).
影响因子：
7.2
作者：
Brown, David;Wightman, Raymond;Turner, Simon
通讯作者：
Turner, Simon