产品名称
脂多糖 来源于肠沙门氏菌 肠炎血清型, purified by phenol extraction
biological source
Salmonella enterica (Serotype enteritidis)
form
lyophilized powder
purified by
phenol extraction
impurities
<3% Protein (Lowry)
color
white to faint yellow
solubility
water: 0.90-1.10 mg/mL, slightly hazy to turbid, colorless to faintly yellow
shipped in
ambient
storage temp.
2-8°C
Quality Level
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Application
脂多糖 (LPS) 是革兰氏阴性菌细胞壁的特征性成分。LPS 及其脂质 A 部分通过 Toll 样受体 4 (TLR4) 刺激天然免疫系统的细胞。
Biochem/physiol Actions
脂多糖（LPS）位于膜的外层，并且在非包封的菌株中，其暴露于细胞表面。它们有助于外膜的完整性，并可保护细胞免受胆汁盐和亲脂性抗生素的作用。
General description
本品为肠炎沙门菌中提取的苯酚。来源菌株为 ATCC 13076。肠炎沙门氏菌的脂多糖在小鼠脾细胞中具有致突变性，并在这些细胞中引起空斑形成反应。
Preparation Note
该产品可溶于水（5mg / ml）或细胞培养基（1mg / ml），产生浑浊的淡黄色溶液。当涡旋并升温至70-80 oC后，在盐水中可获得更高浓度的溶液（20mg/ml），但仍然是浑浊的溶液。脂多糖是一种在各种溶剂中都形成胶束的分子。在水和磷酸盐缓冲盐水中可观察到浑浊的溶液。有机溶剂无法使溶液变澄清。甲醇会产生含有漂浮物的混浊悬浮液，而水会产生均匀的混浊溶液。
存储类别
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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