Synthetic peptides VH(27-68) and VH(16-68) of the myeloma immunoglobulin M603 heavy chain and their association with the natural light chain to form an antigen binding site
1987
: A 53-residue peptide corresponding to the variable region 16-68 of the heavy chain of phosphocholine binding mouse myeloma M603 protein was synthesized by a solid-phase fragment strategy. The homogeneity of the VH(16-68) peptide was confirmed by high-performance liquid chromatography, sodium dodecyl sulfate-polyacrylamide gel electrophoresis, amino acid analysis, and mass spectrometry. Synthetic VH(16-68) associated with the M603 light chain, and about 27% of the recombination mixture bound to phosphocholine immobilized on Sepharose as compared to a 28% binding yield obtained for the recombined natural light and heavy chains under the same conditions. The binding yield for the recombinant of the light chain with previously prepared VH(27-68) fragment was about 11%. These semisynthetic antibodies VH(27-68) and VH(16-68) light chain recombinants are forerunners of structural variants designed to study the antigen binding pocket of the M603 immunoglobulin.
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