Recombinant HBsAg-preS2 (Recombinant Hepatitis B Surface Antigen preS2; rHBsAg-preS2);重组乙型肝炎表面抗原preS2
Synonyms
Middle surface antigen; PreS2
Purity
>95% by SDS-PAGE and HPLC analyses.
Biological Activity
N/A
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Formulation
Lyophilized from a 0.2μm filtered concentrated solution in 20mM PB, pH7.4, 50mM NaCl.
Endotoxin
Less than 1EU/μg of rHBsAg-preS2 as determined by LAL method.
Reconstitution
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0mg/ml. Stock solutions should be apportioned into working aliquots and stored at <-20℃. Further dilutions should be made in appropriate buffered solutions.
Category
Others
Background
Hepatitis B virus (HBV) is a human pathogen, causing serious liver disease. The HBV surface protein antigens (HBsAg) are comprised of three carboxyl co terminal HBs proteins termed large (LHBs), middle (MHBs) and small (SHBs, also called major) protein. LHBs and MHBs also share the highly hydrophobic, repetitive, membrane spanning S domain. In addition, MHBs has a 55 amino acid region called preS2.