The list of search enzymes is specified at the end of the comet.params file
beginning with the line [COMET_ENZYME_INFO]. The actual enzyme list and
digestion parameters are read here. So one can edit/add/delete enzyme definitions
simply be changing the enzyme information.
This parameter works in conjection with the num_enzyme_termini
parameter to define the cleavage rule for fully-digested vs. semi-digested search options.
This parameter works in conjection with the allowed_missed_cleavage
parameter to define the miss cleavage rule.