Dear all,
Although Transition Settings -> Filter are adjusted to accept precursor charges from 2 to 5, I am unable to see in the filter list the 2+ for several peptides (for example, in iRTs GILFVGSGVSGGEEGAR and ELGQSGVDTYLQTK). It is not a matter of turning off auto-select filter. Charge 2+ is just not available.
Is there another parameter to be set?
Thanks!
Valdemir