The use of SPG is extremely wide, and can be used for separation and purification or removal of IgG from serum, purification of monoclonal antibodies, separation of antigen-antibody complexes, and the like. After SPG is combined with agarose gel, affinity resin can be prepared for antibody purification, and different subtypes of IgG can be isolated and purified from serum, ascites, cell culture supernatant, etc.
Native SPG has both albumin and cell surface binding domains in addition to the IgG binding domain. Recombinant SPG removes albumin and cell surface binding domain to reduce non-specific binding, it has greater affinity than native SPG and SPA.


Size: 1 mg, 10 mg, 100 mg, 500 mg
Formulation: Freeze dried powder; buffer system 5 mM PB(pH 7.4) before lyophilization
Mol. Wt.: 28 kDa
Theory pI: 4.79
Resources: Escherichia coli (E. coli)
Absorbance index: UV absorption method, extinction coefficient E(0.1% at 280 nm) = 1.342
Activity: ≥ 1600 U/mg protein
Purity: ≥95% by SDS-PAGE analysis
Storage Condition: -20℃
Conditions of transport: Ambient Temp
Storage Duration: 3 years