Abstract
Previous studies in this laboratory have resulted in the determination of the antigenic structure of myoglobin. The present work was carried out to investigate the genetic control of the murine antibody response to myoglobin following immunization with free (i.e., not coupled to a carrier) synthetic antigenic sites or other peptides corresponding to surface regions of myoglobin that are not immunogenic when the native molecule is the immunizing antigen. Synthetic peptides corresponding to antigenic site 1 (peptide 15-22), site 2 (peptide 56-62), site 3 (peptide 94-100), site 4 (peptide 113-120), site 5 (peptide 145-151) and two surface regions, peptide 1-6 and peptide 121-127, were injected in complete Freund's adjuvant in different strains of mice. Serum antibodies specific for myoglobin were subsequently obtained and were measured by means of a radioimmune plate binding assay in which Mb was used as the solid phase antigen. It was found that the genetic control of the antibody response to myoglobin following immunization with the free synthetic peptides was different from the genetic control obtained following immunization with native myoglobin. The significance of this finding is discussed.
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