GNPS Ontology

STEP 1: Search for spectral hits by entering precursor M/Z value and metabolite peaks into GNPS MASST. Follow this tutorial. For a more comprehensive search use the GNPS Molecule Explorer.

STEP 2: Upload the MASST results file from STEP 1 below to view MASST search results on ontology tree. You can also download the “tbas_taxids.txt” and upload into T-BAS to view results on bacterial or fungal reference trees.

Example compound eluting for Penicillium olsonii (IC26742)

xanthoepocin   reference

Xanthoepocin, a photolabile antibiotic of Penicillium ochrochloron CBS 123823 with high activity against multiresistant gram-positive bacteria.

asperphenamate

Example compounds for Aspergillus section Flavi

cyclopiazonic acid M+H

aflatoxin B1   references

Mycotoxin producers in the Aspergillus genus: an update
Aflatoxin-like compounds produced by dermatophytes