硫醇单一活化Cyanine3 dye。该染料用于向包含半胱氨酸残基的蛋白、多肽以及硫醇化的分子(比如含硫醇的寡核苷酸)标记Cyanine3荧光团(Cy3®的类似物)。 胱氨酸应该在标记前先使用TCEP(tris-carboxyethylphosphine)或其他还原剂进行还原反应。 使用Cyanine3 maleimide进行的标记反应是有选择性的,有效的。 我们推荐使用水溶的Sulfo-Cyanine3 maleimide标记抗体和其他敏感蛋白。
推荐手册:
蛋白与其他硫醇分子的马来酰亚胺标记
Cy® is a trademark of GE Healthcare.
General properties
Appearance:
red powder
Molecular weight:
615.20
Molecular formula:
C36H43ClN4O3
Solubility:
soluble in organic solvents (DMF, DMSO, dichloromethane), insoluble in water
Quality control:
NMR 1H (95%) and 13C, TLC, functional testing
Storage conditions:
Storage: 24 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Avoid prolonged exposure to light. Desiccate.
MSDS:
Download
Spectral properties
Excitation maximum, nm:
555
Extinction coefficient at excitation maximum, Lmol-1cm-1:
150000
Emission maximum, nm:
570
Fluorescence quantum yield:
0.31
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