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scFv-based Bispecific Fragments

Scfv fragments are a class of units that are commonly used to generate BsAbs. Besides the formats widely studied, there are numerous other scFv-based bispecific fragments.

scFv-based Bispecific Fragments

scFv-CH1/CL: Two scFv fragments against different epitopes are linked to CH1/CL domain separately. The CH1 and CL can form heterodimers. The BsAb of this format has 1+1 antigen-binding valency. (Cat. BSCC)
scFv-CH3: This format is a fusion protein of scFv fragments to the CH3 domains. The knobs-into-holes mutations in CH3 facilitate the formation of heterodimer. The addition of CH3 domains extends the half-life of the bispecific fragments. (Cat. BSFC)
Miniantibody: Miniantibody is a type of dimeric bispecific fragments. It contains two scFvs connected by intra-chain bond of two peptides. Miniantibody combines two specificities with 1+1 antigen-binding valency. (Cat. MNAB)
scFv-Fc: scFv-Fc is a bispecific, bivalent molecule which is developed by fusing scFvs with different specificity to each Fc chain. The knobs-into-holes mutations in Fc force the formation of heterodimer. scFv-Fc have similar properties with conventional IgGs. (Cat. BSCFV)
scFv-Fc-scFv (Intrabody): scFv-Fc-scFv is generated by fusing two groups of bivalent scFv fragments to the N- and C-terminus of the Fc region. It is a bispecific, tetravalent homodimer with 2+2 antigen-binding valency. (Cat. BSTF)

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