Comet parameter: num_enzyme_termini

  • This parameter specifies the number of enzyme termini a peptide must have.
  • For example, if trypsin were specified as the search enzyme, only fully tryptic peptides would be analyzed if "num_enzyme_termini = 2" whereas semi-tryptic peptides would be analyzed if "num_enzyme_termini = 1".
  • This parameter is unused if a no-enzyme search is specified.
  • Valid values are 1 and 2.

    Example:
    num_enzyme_termini = 1
    num_enzyme_termini = 2