G418

antibioticmech:aro-9047378d43 ·ANTIBACTERIAL ·MINTED SEEDED

A gentamicin class aminoglycoside antibiotic often used in mammalian cell culture work as a selectable marker for the neo cassette (APH3'). — PMID:4007271

Machine-generated and unreviewed. Identity, structure and cross-references come straight from ChEBI's and CARD's own data; no curator has signed off on this record yet.

Classification

aminoglycoside antibioticARO:0000016

Strictly broader compounds or drug classes this molecule belongs to.

aminoglycoside antibiotic ARO:0000016

Chemical structure

Computed structure properties
Molecular formula	C20H40N4O10
Charge	0
Average mass	496.6 Da
Monoisotopic mass	496.27444349 Da
Source	PubChem · retrieved 2026-08-29
InChIKey	BRZYSWJRSDMWLG-DJWUNRQOSA-N

SMILES

C[C@H]([C@@H]1[C@H]([C@@H]([C@H]([C@H](O1)O[C@@H]2[C@H](C[C@H]([C@@H]([C@H]2O)O[C@@H]3[C@@H]([C@H]([C@@](CO3)(C)O)NC)O)N)N)N)O)O)O

InChI

InChI=1S/C20H40N4O10/c1-6(25)14-11(27)10(26)9(23)18(32-14)33-15-7(21)4-8(22)16(12(15)28)34-19-13(29)17(24-3)20(2,30)5-31-19/h6-19,24-30H,4-5,21-23H2,1-3H3/t6-,7+,8-,9-,10-,11+,12+,13-,14-,15-,16+,17-,18-,19-,20+/m1/s1

Also called

geneticin (EXACT_SYNONYM)— aro

Cross-references

Identifiers for this same structure in other resources. An accession that lands on two different structures in this corpus is withheld from both rather than shown here, since it names at most one of them.

G418ARO:3000653
pubchem.compound:123865

Source concepts

Every upstream concept that resolved to this record. The merge is the product: this is what shows ChEBI and CARD are describing the same structure.

Upstream concepts merged into this record
Source	Native ID	Label	Minted CURIE	Version
ARO	`ARO:3000653`	G418	`antibioticmech:aro-9047378d43`	2026-08-30

Molecular targets

The molecular entity or process this compound acts on. Each target carries evidence — this is a mechanistic claim, not a classification.

antibiotic sensitive 16S rRNA NUCLEIC_ACID DIRECT_BINDING_TARGET

ARO:3000755

CARD/ARO database assertion; target organism, strain, and assay are not specified. 16S rRNA is asserted as the target. Evidence status: PRIMARY_EVIDENCE_NEEDED. Source: CARD_ARO 2026-08-30 (retrieved 2026-08-30).

ARO:3000755 (CARD/ARO asserts targeted_by_antibiotic ARO:3000653 (G418); database assertion, not a primary citation.)

Resistance mechanisms

6 source-backed resistance determinants or associations, with ARO grounding where reported. Grouped by reported mechanism type.

ANTIBIOTIC_TARGET_ALTERATION 6

ANTIBIOTIC_TARGET_ALTERATION
Determinant	ARO ID	Organism	Gene families	Evidence
Escherichia coli 16S rRNA (rrsB) mutation conferring resistance to G418	ARO:3003397	not organism-specific	—	ARO:3003397 (CARD/ARO asserts confers_resistance_to_antibiotic ARO:3000653 (G418); database assertion, not a primary citation.)
armA	ARO:3000858	not organism-specific	—	ARO:3000858 (CARD/ARO asserts confers_resistance_to_antibiotic ARO:3000653 (G418); database assertion, not a primary citation.)
rmtA	ARO:3000859	not organism-specific	—	ARO:3000859 (CARD/ARO asserts confers_resistance_to_antibiotic ARO:3000653 (G418); database assertion, not a primary citation.)
rmtB	ARO:3000860	not organism-specific	—	ARO:3000860 (CARD/ARO asserts confers_resistance_to_antibiotic ARO:3000653 (G418); database assertion, not a primary citation.)
rmtC	ARO:3000861	not organism-specific	—	ARO:3000861 (CARD/ARO asserts confers_resistance_to_antibiotic ARO:3000653 (G418); database assertion, not a primary citation.)
sgm	ARO:3000862	not organism-specific	—	ARO:3000862 (CARD/ARO asserts confers_resistance_to_antibiotic ARO:3000653 (G418); database assertion, not a primary citation.)

Curation history

SEEDED_FROM_SOURCES 2026-08-30 · seed_from_sources
Seeded from data/raw/ inventories (ARO)
RESEEDED_FROM_SOURCES 2026-08-30 · seed_from_sources
Re-seeded from updated data/raw/ inventories
RESEEDED_FROM_SOURCES 2026-08-30 · seed_from_sources
Re-seeded from updated data/raw/ inventories
RESEEDED_FROM_SOURCES 2026-08-31 · seed_from_sources
Re-seeded from updated data/raw/ inventories

Provenance

Seeded by scripts/seed_from_sources.py from the committed inventories in data/raw/. View the record (YAML).

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