The sequence contains a C-terminal His-tag for easy purification and detection. Secretion of the protein is ensured by an Igk leader. When the protein passes the membrane, the leader segment is cleaved off. By connecting the variable regions of the heavy and the light chain of an anti-CD3 antibody with a short GGGGS linker (BBa_K3117004), the scFv retains its antigen-binding ability and is much smaller than a conventional antibody. Thus, it is well suited as part of a fusion protein with another effector. The SpyTag attached to the scFv belongs to the SpyTag/SpyCatcher system and is one part of the FbaB protein of Streptococcus pyogenes. Once it comes into contact with its corresponding other part, the SpyCatcher (BBa_K3117016), they bind covalently. This allows our part to be used in a modular manner in combination with other molecules carrying the SpyCatcher.
−
−
===Source===
===Source===
Revision as of 18:18, 21 October 2019
scFv bispecific antibody against GPA33 and CD3 codon optimized for CHOs
