The invention belongs to the technical field of
biology, and particularly relates to a dissolving and purifying method of an
HBx protein inclusion body derived from
Hepatitis B
Virus HBV. The preparation method comprises the following steps: expressing
HBx by using a
recombinant expression system; collecting cells containing the
HBx protein which has been subjected to
recombinant expression, breaking the cells by using a
lysis buffer solution under a cooling condition, and collecting a part containing an HBx
protein inclusion body; adding a
dissolution buffer solution into the obtained part containing the HBx protein inclusion body for resuspension and denaturation; performing renaturationon on the product, removing
nucleic acid, performing purification, and obtaining HBx protein; whereinthe steps are completed under the environmental condition of less than or equal to 10 DEG C. By using the method provided by the invention, a stable and uniform
monomer HBx sample can be obtained, andthe concentration can reach 15mg / ml. The protein sample can be used as a scientific research
reagent, and a
monoclonal antibody of HBx can be prepared by using the protein sample.