Description
Three major IgG isotypes are found in camel: IgG1, IgG2, and IgG3. IgG1 resembles IgG from other species in that it is comprised of two heavy chains and two light chains. IgG2 and IgG3 each consist of two heavy chains but both lack light chains. The heavy chains of IgG2 and IgG3 lack the CH1 domain present in IgG1. The hinge region between the CH2 and VH domain is longer in IgG2, giving it a slightly higher molecular weight