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福建柏叶片蛋白质双向电泳技术优化

Protocols optimization in two-dimensional electrophoresis of Fokienia hodginsii leaves total protein

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蛋白质双向电泳是蛋白质组学研究方法之一,但蛋白质双向电泳技术体系却因物种不同而有所差异,因而蛋白质双向电泳体系的建立是进行蛋白质分离、鉴定的首要步骤。本文对福建柏叶片蛋白质提取方法、IPG胶条、等电聚焦参数设定、丙烯酰胺分离胶浓度等因子进行单因素分析,对福建柏双向电泳技术进行优化。结果表明,采用三氯乙酸-丙酮提取福建柏叶片的蛋白点多且图像清晰, pH4~7的 IPG 胶条最适合福建柏叶片蛋白的分离,等电聚焦参数设定为20000 Vh,浓度为10%的分离胶进行福建柏双向电泳最好。本研究初步建立了福建柏叶片蛋白质双向电泳体系,为深入研究福建柏蛋白质组学提供依据。
In order to study the most efficient 2-DE protocol of Fokienia hodginsii proteomics, three different methods including TCA-acetone, phenol extraction method and TCA-phenol extraction method were tested in the experiment. Besides, three different IPG strips of pH3~10, pH5~8, pH4~7 combined with three different focusing parameter which showed 20 000, 25 000, 30 000 Vh respectively were performed in IEF. Finally, different concentration separation gel (10%,12.5%)were performed in all SDS-PAGE trial. The results indicated that more protein spots were detected on 2-DE gels by phenol extraction method, IPG strips of pH4~7, 25 000 Vh focusing parameter, and 10% separate gel were the best settings of the 2-DE protocol. The experiment preliminary established the 2-DE protocols of F. hodginsii leaves which would be beneficial for the further study of proteinmics.

two-dimensional electrophoresisFokienia hodginsiiproteomicsisoelectric focusingpH

杨德明、张娅欣、沈少炎、荣俊冬、何天友、郑郁善

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福建农林大学林学院,福建 福州350002

福建农林大学工业原料研究所,福建 福州350002

福建农林大学艺术园林学院,福建 福州350002

双向电泳 福建柏 蛋白质组 等电聚焦 pH

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K81MLV09A

2017

森林与环境学报
福建农林大学

森林与环境学报

CSTPCDCSCD北大核心
影响因子:0.964
ISSN:2096-0018
年,卷(期):2017.37(1)
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