Micromilli - 生物技术资讯

 cystal of ice will form that can mechanically shear the protein.the same as DNA.
for storage of DNA, it is better to be stored in buffer to avoid such mechanical shearing and hydrolysis, if you concern about EDTA, you can use Tris-HCl (pH 8.0).
    Here is some general guide for storage of purified proteins:
    For short term storage (up to 24 h), most proteins can be kept at 4C.