Comet parameter: add_C_cysteine

• Specify a static modification to the residue C.
• The specified mass is added to the unmodified mass of C.
• The default value is “0.0” if this parameter is missing except if Comet is compiled with the Crux flag on. For Crux compilation, the default value is “57.021464” if this parameter is missing.

Example:

add_C_cysteine = 57.021464