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Chemistry
使用酶法,化学(甲基化)和物理(质谱,核磁共振)技术,植物墙Heteroxylans测序
使用酶法,化学(甲基化)和物理(质谱,核磁共振)技术,植物墙Heteroxylans测序
JoVE Journal
Chemistry
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JoVE Journal Chemistry
Sequencing of Plant Wall Heteroxylans Using Enzymic, Chemical (Methylation) and Physical (Mass Spectrometry, Nuclear Magnetic Resonance) Techniques

使用酶法,化学(甲基化)和物理(质谱,核磁共振)技术,植物墙Heteroxylans测序

Full Text
8,045 Views
11:49 min
March 24, 2016

DOI: 10.3791/53748-v

Sunil Ratnayake1, Kristina Ford1, Antony Bacic1

1ARC Centre of Excellence in Plant Cell Walls, School of BioSciences,University of Melbourne

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Please note that some of the translations on this page are AI generated. Click here for the English version.

该协议描述了用于杂木聚糖还原端 (RE) 和内部区域糖基序列结构表征的具体技术,方法是在酶促(内多聚糖酶)水解之前用 2 氨基苯甲酰胺标记 RE,然后使用质谱 (MS) 和核磁共振 (NMR) 分析所得的寡糖。

总体目标是通过标记水溶性 heravenaxylans 的原始还原端糖残基并用内木聚糖酶处理以生成标记 dolara 糖类混合物来表征杂木聚糖的还原末端和内部区域糖基序列。这种方法可以帮助回答糖组学领域中的关键问题,例如寡糖或多糖精细结构的改变,以响应计划的生长发育,以及非生物和生物压力源。该方法的主要优点是它描述了对任何聚糖或多糖的还原 n 序列以及内部再生序列进行测序的综合方法。

在 1 毫升水中制备 1 摩尔的氰基硼氢化钠溶液。然后,通过在 65 摄氏度下加热并将反应混合物的 pH 值调节至 pH 5.5,用 10% 的乙酸将 27.2 毫克 2AB 试剂溶解在氰基硼氢化钠溶液中。在带盖的玻璃管中将 200 微升反应混合物加入 1 毫克水溶性阿拉伯木聚糖中,并使用涡旋混合器混合。

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