性能描述

type    Grade X 
form    amorphous powder 
impurities    histone, free (Millon test) 
color    white 
solubility    H2O: soluble10 mg/mL 

Application
May be used for the removal of DNA from protein samples or for the purification of DNA binding proteins. It may be used as an alternative to polybrene in retroviral-mediated gene transfer.

Protamine in the form of solid lipid nanoparticles (SLN) promoted transfection with plasmid DNA more efficiently and with less cytotoxicity than comparable SLNs composed of Esterquat-1.

Protamine in the form of solid lipid nanoparticles (SLN) promoted transfection with plasmid DNA more efficiently and with less cytotoxicity than comparable SLNs composed of Esterquat-1.

Biochem/physiol Actions
Protamine sulfate is a small cationic protein that binds and precipitates DNA. Neutralizes the anticoagulant activity of heparin. Inhibits lipoprotein lipase.
 
溶解性：易溶于水，不溶于乙醇、氯仿或乙醚中。

硫酸鱼精蛋白是一种强碱，能与强酸性肝素钠或肝素钙形成稳定的盐而使肝素失去抗凝作用。本品作用迅速，静脉给药5分钟内即发生中和肝素的作用。但部分肝素可从复合物中再次解离。中和1单位不同来源的肝素所需鱼精蛋白量略有不同，1mg本品可中和90单位自牛肺制备的肝素钠或115单位自猪肠黏膜制备的肝素钠，或100单位自猪肠制备的肝素钙。鱼精蛋白—肝素复合物在体内代谢转化过程尚未被阐明。鱼精蛋白也是一种弱抗凝剂，过量可引起凝血时间指标短暂轻度延长。