Downstream analysis after CAMERA

November 11, 2013, 04:42:58 PM

Hi All,

I am using xcms + camera for metabolomics analysis. After get the "annotated diffreport" file from camera, what should I do next for the database search? How to consider the "isotope" and "adducts" columns that generated by CAMERA?

Thanks

Re: Downstream analysis after CAMERA

Reply #1 – November 12, 2013, 12:22:58 AM

Hi,

one idea would be to ignore all higher isotopes, and "subtract" the mass of the adduct
from the m/z. You could use the Rdisop subMolecule() for that.

Yours,
Steffen