
NGS Library Prep kits
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DNA-Seq
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RNA-Seq
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Single Cell-Seq
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Epigenetics
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Beads
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library Quantification
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cfDNA
Molecular Research
Drug Discovery
BCA Protein Quantification Kit
BCA Protein Quantification Kit
精准、快速的蛋白定量试剂
操作简单
高灵敏度
兼容性广
线性关系高的标准曲线
图1.使用BSA标准蛋白绘制标准曲线
BCA 蛋白浓度测定试剂盒(BCA Protein Quantification Kit),是目前灵敏度最高的蛋白质测定方法之一。在碱性条件下,蛋白质将Cu2+还原为Cu+,Cu+ 与独特的BCA Reagent A(含有BCA)相互作用产生敏感的颜色反应,形成紫色的络合物。该水溶性的复合物在A562 nm 处显示强烈的吸光性,吸光度和蛋白质浓度在广泛范围内有良好的线性关系,根据吸光值可以推算出蛋白浓度。因此,使用酶标仪测定其在A562 nm 处的吸收值,并与标准曲线对比,即可计算待测蛋白的浓度。
常用浓度的去垢剂SDS,Triton X-100,Tween-20等不影响检测结果, 但受螯合剂(EDTA,EGTA)、还原剂(DTT,巯基乙醇)和脂类的影响。实验中,若发现样品稀释液或裂解液本身背景值较高,可使用Bradford 蛋白浓度测定试剂盒。
组分 |
E112-01 (250 rxn) |
E112-02 (500 rxn) |
BSA Standard (1 mg/ml) |
2 × 1 ml |
4 × 1 ml |
BCA Reagent A |
50 ml |
100 ml |
BCA Reagent B |
1 ml |
2 ×1 ml |
BCA Reagent A/B 2-8°C 保存,BSA Standard -30-15°C 保存
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