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Merck

L5391

Sigma-Aldrich

来自西非单叶豆加纳籽)的凝集素

Isolectin B4 (BSI-B4), peroxidase conjugate, lyophilized powder

别名:

西非单叶豆 凝集素, BS-I

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About This Item

分類程式碼代碼:
12352202
NACRES:
NA.32

生物源

Bandieraea simplicifolia

品質等級

共軛

peroxidase conjugate

化驗

≥90% protein basis (Warburg-Christian)

形狀

lyophilized powder

效力

<200 μg per mL agglutination activity (using human blood group B erythrocytes)

peroxidase activity

40-160 units/mg protein

成份

Protein, ~95% modified Warburg-Christian

技術

blood typing: suitable
fractionation: suitable

儲存溫度

−20°C

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應用

通用蛋白质印迹方案:
  • 糖蛋白样品规格:500ng
  • 凝集素浓度: 0.1ug/ml

  1. 每条泳道上样500 ng糖蛋白样品
  2. 进行4-20% Bis-Tris SDS page凝胶
  3. 转膜凝胶至PVDF膜上
  4. 用于RIPA缓冲液(R0278 Sigma)在室温对膜进行封闭1小时
  5. 在室温用RIPA缓冲液以0.1 ug/ml孵育HRP凝集素2小时
  6. 用25ml RIPA缓冲液洗膜 5 x 5分钟
  7. 用化学发光底物(CPS1-120)进行检测

生化/生理作用

BS-I对末端α-D-半乳糖残基具有主要亲和力,对末端N-乙酰基-α-D-半乳糖胺残基具有二级亲和力。

其他說明

BS-I是一种四聚体凝集素,由两种类型的亚基A和B组成。存在由不同亚基组成的五种BS-I同工凝集素:BSI-B4、BSI-AB3、BSI-A2B2、BSI-A3B、以及BSI-A4。BSI-B4 是血型B特异的,其对末端α-D-半乳糖残基具有独特的亲和力,而BSI-A4 具有血型A特异性,其对末端N-乙酰基-α-D-半乳糖胺残基具有主要亲和力。

單位定義

在20℃、pH值为6.0条件下,1个单位的连苯三酚在20 s内会形成1 mg红棓酚。

外觀

含柠檬酸钠缓冲盐和氯化钙

準備報告

使用O′Sullivan等人的方法的改进,由VI型过氧化物酶制备。偶联后通过亲和层析重新纯化。

分析報告

凝集活性以 μg/mL表示,并且使用磷酸盐缓冲盐水(pH6.8)对1mg/mL溶液进行连续稀释液来测定,对于每种凝集素,所含有钙、镁和锰的浓度不同。该活性是在25℃孵育1小时后,对2%合适的红细胞悬浮液进行凝集所需的最低浓度。

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

個人防護裝備

Eyeshields, Gloves, type N95 (US)


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