Antibody -

: The two arms that bind to antigens.

: It consists of two identical heavy chains (~50 kDa each) and two identical light chains (~25 kDa each), held together by disulfide bonds. antibody

The canonical antibody structure (typically IgG) is composed of four polypeptide chains: : The two arms that bind to antigens

: The tail of the "Y" that communicates with immune cells to trigger a response. 2. The Five Classes of Antibodies Antibody Structure | Request PDF - ResearchGate antibody