Antigenic domains of the sperm-specific lactate dehydrogenase C4, isozyme

Thomas E. Wheat, Erwin Goldberg*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


Lactate dehydrogenase C, (LDH-C4) is an antigenic protein that occurs only in spermatozoa and the mature testis. The antibody-combining sites of this enzyme were mapped by measuring the binding of anti-LDH-C4 by isolated peptides. Pure mouse LDH-C4 was digested with trypsin, and the resulting fragments were fractionated by reverse-phase high-pressure liquid chromatography. Rabbit anti-mouse LDH-C4 bound to 13 pure peptides. Amino acid compositions and partial or complete sequencing by the Edman degradation was used to identify eight of these fragments in the complete structure of the molecule. The relationship between structure and antigenicity of these peptides is discussed in detail. These data fit best to the domain model of protein antigenicity. This antigenic map of LDH-C4 will be useful in the design of a synthetic contraceptive vaccine.

Original languageEnglish (US)
Pages (from-to)643-649
Number of pages7
JournalMolecular Immunology
Issue number6
StatePublished - Jun 1985

ASJC Scopus subject areas

  • Immunology
  • Molecular Biology


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