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- In molecular biology, a framework region is a subdivision of the variable region (Fab) of the antibody. The variable region is composed of seven amino acid regions, four of which are framework regions and three of which are hypervariable regions. The framework region makes up about 85% of the variable region. Located on the tips of the Y-shaped molecule, the framework regions are responsible for acting as a scaffold for the complementarity determining regions (CDR), also referred to as hypervariable regions, of the Fab. These CDRs are in direct contact with the antigen and are involved in binding antigen, while the framework regions support the binding of the CDR to the antigen and aid in maintaining the overall structure of the four variable domains on the antibody. To increase its stability, the framework region has less variability in its amino acid sequences compared to the CDR. (en)
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- In molecular biology, a framework region is a subdivision of the variable region (Fab) of the antibody. The variable region is composed of seven amino acid regions, four of which are framework regions and three of which are hypervariable regions. The framework region makes up about 85% of the variable region. Located on the tips of the Y-shaped molecule, the framework regions are responsible for acting as a scaffold for the complementarity determining regions (CDR), also referred to as hypervariable regions, of the Fab. These CDRs are in direct contact with the antigen and are involved in binding antigen, while the framework regions support the binding of the CDR to the antigen and aid in maintaining the overall structure of the four variable domains on the antibody. To increase its stabil (en)
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