Precursor m/z

[bittremieux]

How should the precursor m/z be specified? I see some discussions on here that mention "selected ion m/z" (MS:1000744), but the examples on the USI page use "isolation window target m/z" (MS:1000827) instead. That's for data returned by ProteomeCentral and PeptideAtlas, other resources don't even include this information unfortunately.

Additionally, there is also "selected precursor m/z" (MS:1002234) in the PSI-MS CV.

The precursor m/z is pretty important information imo, so it would be nice to have a standardized way of including it.