Characterization of antibodies against human N-terminal parathyroid hormone by epitope mapping.

Two polyclonal antisera from goat and mouse and two monoclonal antibodies against human parathyroid hormone (1-34) were characterised by epitope mapping. Hexapeptides were synthesized on polystyrene pins, the sequences of which overlapped and represented the entire sequence of hPTH(1-34). Binding of antibodies to these hexapeptides was determined and antigenic determinants thus characterized. At least one predominant binding sequence was detected in the region of hPTH(7-14).