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What is the molecular weight (mw) of Immunoglobulin G (IgG)?
Posted January 25, 2018
IgGmolecular weightmouserabbithumangoat
Answer
150 kDa
 
While the molecular weight of IgG varies depending on the species, the typical value cited is 150,000 daltons, which is equivalent to 150,000 g/mol. This number comes from IgG's tetrametric structure. IgG contains two heavy chains (50 kDa each) and two light chains (23.5 kDa).
50 + 50 + 23.5 +23.5 = 150
Additional resources
THE COVALENT STRUCTURE OF AN ENTIRE yG IMMUNOGLOBULIN MOLECULE

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