Question

Parts of the V domains of immunoglobulins and T-cell receptors that determine their antigen specificity and make contact with the specific ligand. These are the most variable part of antigen receptor, and contribute to the diversity of these proteins. There are three such regions CDR1, CDR2, and CDR3 in each V domain

Accepted Answer

complementarity-determining regions CDRs

Front	Parts of the V domains of immunoglobulins and T-cell receptors that determine their antigen specificity and make contact with the specific ligand. These are the most variable part of antigen receptor, and contribute to the diversity of these proteins. There are three such regions CDR1, CDR2, and CDR3 in each V domain
Back	complementarity-determining regions CDRs

V Antigen Regions Parts Domains Immunoglobulins T Cell Receptors