Table 2 Siderophore-like compounds from the cultural liquid of N. mangyaensis NH1 annotated by the Global Natural Products Social Molecular Networking (GNPS) Moldiscovery.

From: Genomic insights and anti-phytopathogenic potential of siderophore metabolome of endolithic Nocardia mangyaensis NH1

Name of identified compound

Metabolite mass

m/z

RT

Adduct

Metabolite FDR* (%)

Carboxymycobactins-6

815.43

408.72

2241.25

M + 2H

0.00

Carboxymycobactin-3

773.38

387.69

2189.47

M + 2H

0.00

Carboxymycobactin_2

759.37

380.70

1571.62

M + 2H

0.12

759.37

380.69

2255.09

M + 2H

0.10

Carboxymycobactin-7

829.45

415.73

1989.07

M + 2H

0.07

897.58

449.80

2953.79

M + 2H

0.07

Mycobactin_(20,DB)

911.60

456.81

3029.24

M + 2H

0.12

Mycobactin_(19,DB)

897.58

449.80

2953.79

M + 2H

0.07

Mycobactin_P_(C18_alkyl)

869.55

435.79

2671.56

M + 2H

0.10

Loihichelin_E

1113.56

557.79

2386.23

M + 2H

0.00

Desferribactin_ATCC_13525

1177.57

589.79

1328.45

M + 2H

0.00

Nocobactin_NA

787.44

394.73

1374.45

M + 2H

0.08

  1. *False discovery rate (FDR). The FDR below 0.9% was used as filters for processing of the final results: the highest quality annotations would require passing thresholds for both metrics.