The PI of AIF is 5. 0. The molecular weight of H and L subunit are 21kD and 19kD respectively. The purified AIF is shown to be highly homogeneous by analysis of PAGE.

• 经鉴定，所得酸性铁蛋白pI为5.；0，H亚基分子量为21kD，L亚基为19kD，PAGE分析呈单一区带。