That region of the immunoglobulin molecule that varies in its amino acid sequence and composition, and comprises the binding site for a specific antigen. It is located at the N-terminus of the Fab fragment of the immunoglobulin. It includes hypervariable regions (COMPLEMENTARITY DETERMINING REGIONS) and framework regions.
Also Known As:
Framework Region, Immunoglobulin; Fv Antibody Fragments; Fv Fragments; Ig Framework Region; Ig Variable Region; Immunoglobulin Framework Region; Immunoglobulin Fv Fragments; Immunoglobulin V; Antibody Fragment, Fv; Antibody Fragments, Fv; Fragment, Fv; Fragment, Fv Antibody; Fragment, Immunoglobulin Fv; Fragments, Fv; Fragments, Fv Antibody; Fragments, Immunoglobulin Fv; Framework Region, Ig; Framework Regions, Ig; Framework Regions, Immunoglobulin; Fv Antibody Fragment; Fv Fragment; Fv Fragment, Immunoglobulin; Fv Fragments, Immunoglobulin; Ig Framework Regions; Ig Variable Regions; Immunoglobulin Framework Regions; Immunoglobulin Fv Fragment; Immunoglobulin Variable Regions; Regions, Immunoglobulin Variable; Variable Regions, Ig; Variable Regions, Immunoglobulin; Variable Region, Ig; Variable Region, Immunoglobulin