From an examination of electroimmunoblots and peptide maps, a mouse monoclonal antibody to human myelin basic protein MBP was shown to react with the amino acid sequence Ala-Ser-Asp-Tyr-Lys-Ser which is located in the C-terminal half of MBP. Although a completely different immunization schedule was used by Sires et al. (1981) they obtained a monoclonal antibody reacting with the same determinant. In contrast to results with other monoclonal antibodies to globular proteins (Todd et al. 1982) this monoclonal antibody seems to react with a sequential rather than a topographical determinant.
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