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Product Overview
Product Name 5 nm Colloidal Protein G (Gold)
Catalog Number orb623912
Hazard InformationNon-Toxic
Target 5 nm Colloidal Protein G (Gold)
Product Properties
Form/Appearance Concentrated, Liquid
Storage Store at 4°C for one year
Note For research use only.
Product Description

Protein G is an immunoglobulin-binding protein expressed in group C and G Streptococcal bacteria much like Protein A but with differing binding specificities. It is a 65-kDa (G148 protein G) and a 58 kDa (C40 protein G) cell surface protein that has found application in purifying antibodies through its binding to the Fab and Fc region. The native molecule also binds albumin, but because serum albumin is a major contaminant of antibody sources, the albumin binding site has been removed from recombinant forms of Protein G. Protein G is conjugated to 5 nm colloidal gold. This gold conjugated protein G generates electron dense particles that are visible using electron microscopy.

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