Abstract
In order to physically stabilize the Fv fragment of anti-lysozyme monoclonal antibody, HyHEL10, the variable domains were linked covalently with a flexible linker. A marked difference in the level of expression in E. coli was observed between VH-linker-VL (scFvHL) and VL-linker-VH (scFvLH). The highly expressed scFvLH was purified by a single step of affinity chromatography from the culture supernatant with a typical yield of 3-5 mg per liter of culture. This HyHEL10 scFvLH showed reduced binding activity toward its antigen, HEL, in comparison with Fv. Thermodynamic study showed that this reduced activity was due to entropic loss upon binding to its antigen, although this interaction between scFvLH and its antigen was enthalpically favorable.
MeSH terms
-
Amino Acid Sequence
-
Animals
-
Antibodies, Monoclonal / biosynthesis*
-
Antibodies, Monoclonal / chemistry
-
Antibodies, Monoclonal / isolation & purification
-
Antigen-Antibody Reactions
-
Blotting, Western
-
Calorimetry
-
Chickens
-
Cloning, Molecular / methods
-
Electrophoresis, Polyacrylamide Gel
-
Escherichia coli
-
Gene Expression*
-
Immunoglobulin Variable Region / biosynthesis*
-
Immunoglobulin Variable Region / chemistry
-
Immunoglobulin Variable Region / isolation & purification
-
Kinetics
-
Molecular Sequence Data
-
Muramidase / antagonists & inhibitors
-
Muramidase / chemistry
-
Muramidase / immunology*
-
Mutagenesis, Insertional
-
Recombinant Proteins / biosynthesis
-
Recombinant Proteins / chemistry
-
Recombinant Proteins / isolation & purification
-
Thermodynamics
Substances
-
Antibodies, Monoclonal
-
Immunoglobulin Variable Region
-
Recombinant Proteins
-
Muramidase