SPA-Cys long Recombinant produced in E.Coli is a single non-glycosylated polypeptide chain with a Cys on C-terminus. SPA-Cys is comprised of 5 IgG-binding domains E-D-A-B-C aligned in series containing 423 amino acids and having a molecular mass of 46.7kDa containing little or no carbohydrate.

• Storage and shipping:Store in -20°c for long term storage. After reconstitution, store in 4°c for short term usage within a few days. Avoid freeze-thaw cycles.
• Notes:this product is available in other size, 10mg, 100mg, 1gram, please contact us for more information.