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. 2022 Jun 22;7(4):e00353-22. doi: 10.1128/msystems.00353-22

TABLE 4.

GNPS parameters

Feature-based molecular network parameter Value
Precursor ion mass tolerance 0.02 Da
Fragment ion mass tolerance 0.02 Da
Minimum matched fragment ions 4
Maximum connected component size (beta) 100
Maximum shift between precursors 500 Da
Library search min matched peaks 4
Search analogs Do search
Top results to report per query 1
Score threshold 0.7
Maximum analog difference 100.0 Da
Minimum peak intensity 0.0
Filter precursor window Filter
Filter peaks in 50 Da window Filter
Filter library Filter
Normalization per file Row sum normalization (per file sum to 1,000,000)
Aggregation method for peak abundances per group Mean
PCoA Bray-Curtis
Run dereplicator Run