streptonigrin   Click here for help

GtoPdb Ligand ID: 8683

Synonyms: bruneomycin | nigrin | NSC-45383 | rufocromomycin | valacidin
Compound class: Natural product or derivative
Comment: Streptonigrin is an antibacterial with anti-tumour effects ascribed to its substituted quinolinequinoic fragment [3]. Streptonigrin is isolated from Streptomyces flocculus or S. rufochronmogenus. This compound is reported to be a selective inhibitor of protein-arginine deiminase type-IV (PADI4) [1].
The ChEMBL entry for streptonigrin (CHEMBL11417) represents an alternative tautomer to the structure shown 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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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 11
Hydrogen bond donors 4
Rotatable bonds 5
Topological polar surface area 196.92
Molecular weight 506.14
XLogP -0.51
No. Lipinski's rules broken 1
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 COC1=C(OC)C=CC(=c2c(N)c([nH]c(c2C)C(=O)O)c2ccc3c(n2)C(=O)C(=C(C3=O)OC)N)C1=O
Isomeric SMILES COC1=C(OC)C=C/C(=c\2/c(N)c([nH]c(c2C)C(=O)O)c2ccc3c(n2)C(=O)C(=C(C3=O)OC)N)/C1=O
InChI InChI=1S/C25H22N4O8/c1-9-14(10-6-8-13(35-2)23(36-3)20(10)30)15(26)19(29-17(9)25(33)34)12-7-5-11-18(28-12)22(32)16(27)24(37-4)21(11)31/h5-8,29H,26-27H2,1-4H3,(H,33,34)/b14-10-
InChI Key DLWOTOMWYCRPLK-UVTDQMKNSA-N
References
1. Dreyton CJ, Anderson ED, Subramanian V, Boger DL, Thompson PR. (2014)
Insights into the mechanism of streptonigrin-induced protein arginine deiminase inactivation.
Bioorg Med Chem, 22 (4): 1362-9. [PMID:24440480]
2. Knuckley B, Jones JE, Bachovchin DA, Slack J, Causey CP, Brown SJ, Rosen H, Cravatt BF, Thompson PR. (2010)
A fluopol-ABPP HTS assay to identify PAD inhibitors.
Chem Commun (Camb.), 46 (38): 7175-7. [PMID:20740228]
3. Severina IS, Pyatakova NV, Postnikov AB, Preobrazhenskaya MN, Khropov YV. (2004)
Antitumor antibiotic streptonigrin and its derivatives as inhibitors of nitric oxide-dependent activation of soluble guanylyl cyclase.
Eur J Pharmacol, 483 (2-3): 127-32. [PMID:14729099]