推薦產品
生物源
Salmonella enterica (Serotype enteritidis)
品質等級
形狀
lyophilized powder
純化經由
gel-filtration chromatography
雜質
<1% Protein
顏色
white to faint yellow
溶解度
water: 4.90-5.10 mg/mL, cloudy to hazy, colorless to faintly yellow
運輸包裝
ambient
儲存溫度
2-8°C
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一般說明
本品是从肠炎沙门氏菌中提取，经凝胶过滤纯化而得。源菌株是ATCC 13076。肠炎沙门氏菌的脂多糖在鼠脾细胞中具有致突变性，并在这些细胞中引起噬菌斑形成反应。
應用
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。
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。
準備報告
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。
儲存類別代碼
11 - Combustible Solids
水污染物質分類（WGK）
WGK 3
閃點（°F）
Not applicable
閃點（°C）
Not applicable
分析證明 (COA)
輸入產品批次/批號來搜索 分析證明 (COA)。在產品’s標籤上找到批次和批號，寫有 ‘Lot’或‘Batch’.。
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