STRUCTURE OF PLANT-CELL WALLS .11. GLUCURONOARABINOXYLAN, A 2ND HEMICELLULOSE IN THE PRIMARY-CELL WALLS OF SUSPENSION-CULTURED SYCAMORE CELLS
STRUCTURE OF PLANT-CELL WALLS .11. GLUCURONOARABINOXYLAN, A 2ND HEMICELLULOSE IN THE PRIMARY-CELL WALLS OF SUSPENSION-CULTURED SYCAMORE CELLS
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DOI：
10.1104/pp.66.6.1135
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发表时间：
1980-01-01
期刊：
影响因子：
7.4
通讯作者：
ALBERSHEIM, P
中科院分区：
文献类型：
--
作者：
DARVILL, JE;MCNEIL, M;ALBERSHEIM, P
本文报道了双子叶植物初生细胞壁中一种未被发现的葡萄糖醛酸阿拉伯木聚糖的分离、纯化和部分性质。的glucuronoarabinoxylan构成悬浮培养的西卡莫尔细胞的初生壁的约5%。这种glucuronoarabinoxylan具有许多类似多糖的结构特征，这些多糖已从单子叶植物的初生和次生细胞壁以及双子叶植物的次生细胞壁中分离出来。初生双子叶植物细胞壁的葡糖醛酸阿拉伯木聚糖具有线性β-葡糖醛酸葡糖醛酸阿拉伯木聚糖。1，4-连接的D-吡喃木糖基主链，其具有沿其长度沿着间隔连接的中性和酸性侧链。酸性侧链以葡萄糖醛酸基或4-O-甲基葡萄糖醛酸基残基终止，而中性侧链由阿拉伯糖基和/或木糖基残基组成。
The isolation, purification and partial characterization of a glucuronoarabinoxylan, a previously unobserved component of the primary cell walls of dicotyledonous plants, were described. The glucuronoarabinoxylan constituted approximately 5% of the primary walls of suspension-cultured sycamore cells. This glucuronoarabinoxylan possessed many of the structural characteristics of analogous polysaccharides that have been isolated from the primary and secondary cell walls of monocots as well as from the secondary cell walls of dicots. The glucuronoarabinoxylan of primary dicot cell walls had a linear .beta.-1,4-linked D-xylopyranosyl backbone with both neutral and acidic sidechains attached at intervals along its length. The acidic sidechains were terminated with glucuronosyl or 4-O-methyl glucuronosyl residues, whereas the neutral sidechains were composed of arabinosyl and/or xylosyl residues.