Three regions (CDR1; CDR2 and CDR3) of amino acid sequence in the IMMUNOGLOBULIN VARIABLE REGION that are highly divergent. Together the CDRs from the light and heavy immunoglobulin chains form a surface that is complementary to the antigen. These regions are also present in other members of the immunoglobulin superfamily, for example, T-cell receptors (RECEPTORS, ANTIGEN, T-CELL).
Also Known As:
Complementarity Determining Region; Complementarity Determining Region 1; Complementarity Determining Region 2; Complementarity Determining Region 3; Complementarity Determining Region I; Complementarity Determining Region II; Complementarity Determining Region III; Complementarity-Determining Region; Complementarity-Determining Region 3; Hypervariable Region, Immunoglobulin; Hypervariable Regions, Immunoglobulin; Third Complementarity-Determining Region; Complementarity-Determining Region 3s; Complementarity-Determining Region, Third; Complementarity-Determining Regions; Complementarity-Determining Regions, Third; Immunoglobulin Hypervariable Region; Immunoglobulin Hypervariable Regions; Region, Complementarity Determining; Region, Immunoglobulin Hypervariable; Regions, Complementarity Determining; Regions, Complementarity-Determining; Regions, Immunoglobulin Hypervariable; Third Complementarity Determining Region; Third Complementarity-Determining Regions