neomycin   Click here for help

GtoPdb Ligand ID: 709

Synonyms: Neo-Rx® | neomycin sulfate
Approved drug PDB Ligand
neomycin is an approved drug (FDA (1964))
Compound class: Natural product or derivative
Comment: Neomycin is an aminoglycoside antibacterial. Neomycin is active against Gram-negative bacteria, and partially active against Gram-positive bacteria. Standard grade neomycin is a mixture of several related compounds, including neomycin A (neamine), neomycin B (framycetin) and neomycin C, with neomycin B being the most active component. We show the structure of neomycin B here.
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Ligand Activity Visualisation Charts

These are box plot that provide a unique visualisation, summarising all the activity data for a ligand taken from ChEMBL and GtoPdb across multiple targets and species. Click on a plot to see the median, interquartile range, low and high data points. A value of zero indicates that no data are available. A separate chart is created for each target, and where possible the algorithm tries to merge ChEMBL and GtoPdb targets by matching them on name and UniProt accession, for each available species. However, please note that inconsistency in naming of targets may lead to data for the same target being reported across multiple charts.

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View interactive charts of activity data across species
2D Structure
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2D Structure

An image of the ligand's 2D structure. For small molecules with SMILES these are drawn using the NCI/CADD Chemical Identifier Resolver. Click on the image to access the chemical structure search tool with the ligand pre-loaded in the structure editor. For other types of ligands, e.g. longer nucleotides and peptides, a manually drawn representation of the molecule may be provided.

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Click here for structure editor
Physico-chemical Properties
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Physico-chemical Properties

Calculated molecular properties are available for small molecules and natural products (not peptides). Properties were generated using the CDK toolkit. All properties were selected to enable the prediction of the Lipinski Rule-of-Five profile or ‘druglikeness’ for each ligand. For more info on each category see the help pages.

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Hydrogen bond acceptors 19
Hydrogen bond donors 13
Rotatable bonds 9
Topological polar surface area 353.11
Molecular weight 614.31
XLogP -6.91
No. Lipinski's rules broken 2
SMILES / InChI / InChIKey
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SMILES / InChI / InChIKey

SMILES (Simplified Molecular Input Line Entry Specification) A specification for unambiguously describing the structure of chemical molecules using short ASCII strings. Canonical SMILES specify a unique representation of the 2D structure without chiral or isotopic specifications. Isomeric SMILES include chiral specification and isotopes.

Standard InChI (IUPAC International Chemical Identifier) and InChIKey InChI is a non-proprietary, standard, textual identifier for chemical substances designed to facilitate linking of information and database searching. An InChIKey is a simplified version of a full InChI, designed for easier web searching.

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Canonical SMILES OCC1OC(C(C1OC1OC(CN)C(C(C1N)O)O)O)OC1C(O)C(N)CC(C1OC1OC(CN)C(C(C1N)O)O)N
Isomeric SMILES OC[C@H]1O[C@H]([C@@H]([C@@H]1O[C@H]1O[C@@H](CN)[C@H]([C@@H]([C@H]1N)O)O)O)O[C@@H]1[C@@H](O)[C@H](N)C[C@@H]([C@H]1O[C@H]1O[C@H](CN)[C@H]([C@@H]([C@H]1N)O)O)N
InChI InChI=1S/C23H46N6O13/c24-2-7-13(32)15(34)10(28)21(37-7)40-18-6(27)1-5(26)12(31)20(18)42-23-17(36)19(9(4-30)39-23)41-22-11(29)16(35)14(33)8(3-25)38-22/h5-23,30-36H,1-4,24-29H2/t5-,6+,7-,8+,9-,10-,11-,12+,13-,14-,15-,16-,17-,18-,19-,20-,21-,22-,23+/m1/s1
InChI Key PGBHMTALBVVCIT-VCIWKGPPSA-N
No information available.
Summary of Clinical Use Click here for help
Used topically in the treatment of eye infections, otitis externa, treatment or prevention of bacterial infections in skin lesions and in the prevention of bacteriuria and gram negative rod bacteremia in abacteriuric patients with indwelling catheters. Also used orally to treat hepatic encephalopathy.
Mechanism Of Action and Pharmacodynamic Effects Click here for help
Neomycin binds to 30S-subunit proteins and 16S rRNA. This leads to misreading of mRNA which in turn leads to the insertion of incorrect amino acids into the polypeptide which leads to the formation of nonfunctional or toxic peptides and breakup of polysomes into nonfunctional monosomes.
External links Click here for help
For extended ADME data see the following:

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