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- 详细信息
- 文献和实验
- 技术资料
- 保存条件:
冷冻-20℃
- 英文名:
1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[carboxy(polyethylene glycol)-3400, NHS ester] sodium salt
- 库存:
999+
- 供应商:
上海维亦特生物科技有限公司
- CAS号:
2410279-87-5
别名:1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[carboxy(polyethylene glycol)-3400, NHS ester] sodium salt
分子式:C199H388N2NaO89P
分子量:4287.18
稳定性:1 year
存储:冷冻-20°C
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文献和实验Synthesis, Characterization, and Functionalization of Gold Nanoparticles for Cancer Imaging
(polyethylene glycol), and cancer-specific mAb F19 was attached by means of NHS-EDC coupling chemistry taking advantage of a carboxylic acid group on the heterobifunctional PEG. These conjugates were completely stable and were characterized by a variety
修饰,常有几个氨基被修饰,导致多态混合物的产生,即使只结合一个聚乙二醇,也可能结合在不同的氨基位点上,产生位点异构体。由于蛋白质只有一个末端氨基,因此对它的修饰可以减少多态混合物和位点异构体的产生,但修饰末端氨基的聚乙二醇反应时需使用硼氢氰化钠,有一定的毒性。氨基修饰最常用的修饰剂为SS-PEG、SC-PEG、SPA-PEG、NHS-PEG2和ALD-PEG等。 巯基修饰 活化半胱氨酸的巯基往往处于蛋白质的活性中心部位,位于蛋白质表面的自由巯基远少于氨基,因此修饰效率低下,修饰后蛋白活性损失较大
Determination of Protein Contacts by Chemical Cross‐Linking With EDC and Mass Spectrometry
and the resulting peptides recovered. Chemically bonded peptides are distinct from the multitude of unmodified single peptides by the presence of two carboxy?terminal ends. The protocol also describes incorporation of 18 O at the carboxy?terminal ends
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