Merck
CN

L2762

Sigma-Aldrich

脂多糖 来源于大肠杆菌 026:B6

purified by gel-filtration chromatography

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别名:
LPS
EC 号:
MDL编号:
NACRES:
NA.25

生物来源

Escherichia coli (O26:B6)

质量水平

形式

lyophilized powder

纯化方式

gel-filtration chromatography

杂质

<5% Protein

颜色

white to faint yellow

溶解性

water: 4.90-5.10 mg/mL, cloudy to hazy, colorless to faintly yellow

运输

ambient

储存温度

2-8°C

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一般描述

该产品是从大肠杆菌血清型 O26:B6中提取的,并已通过凝胶过滤进行纯化。源菌株是ATCC 12795。来自血清型 026的LPS:B6是来自大肠杆菌的唯一 LPS,其在SDS-PAGE 上表现出短链长行为。该 LPS的短链长度接近突变粗糙株 LPS的短链长。该LPS血清型已经以1 μg/ml用于刺激中性粒细胞。

应用

脂多糖(LPS)是革兰氏阴性细菌细胞壁的特征成分。LPS及其脂质A部分通过Toll样受体4(TLR4)刺激先天免疫系统的细胞,TLR4是Toll样受体蛋白家族的成员,该家族可识别常见的病原体相关分子模式(PAMP)。

生化/生理作用

脂多糖(LPS)位于膜的外层,并且暴露在无包膜菌株的细胞表面。它们有助于维持外层膜的完整性,并保护细胞免受胆汁盐和亲脂性抗生素的破坏。

制备说明

本品溶于水(5 mg/ml)或细胞培养基(1 mg/ml),得到浑浊的淡黄色溶液。以盐水为溶剂时,经过涡旋并加热至70-80 oC后,得到浓度更高但仍然浑浊的溶液(20 mg/ml)。脂多糖分子可在各种溶剂中形成胶束。在水和磷酸盐缓冲盐水中,可观察到混浊的溶液。使用有机溶剂不会得到更澄清的溶液。以甲醇为溶剂将得到含漂浮物的混浊悬浮液,而以水为溶剂将得到均匀的混浊溶液。

其他说明

为了全面了解我们针对客户研究提供的各种脂多糖产品,建议您访问我们的碳水化合物分类页面。

象形图

Skull and crossbones

警示用语:

Danger

危险声明

危险分类

Acute Tox. 2 Oral

储存分类代码

6.1A - Combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 3

闪点(°F)

Not applicable

闪点(°C)

Not applicable


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