MiMeDB: Showing metabocard for Questin (MMDBc0005307)

Record Information

Version

1.0

Status

Detected and Quantified

Creation Date

2021-05-14 22:56:50 UTC

Update Date

2025-10-07 16:04:59 UTC

Metabolite ID

MMDBc0005307

Metabolite Identification

Common Name

Questin

Description

Questin is a member of the anthraquinone chemical class, which is characterized by a three-ring structure containing two carbonyl groups. This metabolite has garnered attention in various studies for its potential biological activities. For instance, it has been identified alongside other anthraquinones, providing insights into their biosynthetic pathways (PMID:39914350 ). Additionally, questin has been found in the context of polyketides, indicating its diverse roles in natural product chemistry (PMID:39590656 ). Notably, it has been recognized for its antifungal properties, particularly as an O-methylated derivative of emodin (PMID:35475366 ). Furthermore, questin is implicated as a crucial intermediate in the biosynthesis of geodin in Aspergillus terreus, although the specific O-methyltransferase responsible for its formation remains unidentified (PMID:35475366 ). Recent studies have also isolated questin from wetland fungi, highlighting its presence in various ecological niches (PMID:34949143 ). Moreover, it has been characterized alongside other anthraquinones in antitumor bioassays, further underscoring its potential therapeutic applications (PMID:34932273 ). Overall, questin represents an intriguing subject for ongoing research in both chemistry and biology.

Structure

MOL SDF PDB SMILES InChI


  Mrv1533004241518472D          

 21 23  0  0  0  0            999 V2000
    5.0013   -0.4125    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.2868   -0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.2868    0.8250    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.5724    1.2375    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.8579    0.8250    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.8579    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.5724   -0.4125    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.1434   -0.4125    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.1434   -1.2375    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    1.4289   -0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.7145   -0.4125    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.0000    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.0000    0.8250    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.7145    1.2375    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.4289    0.8250    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.1434    1.2375    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.1434    2.0625    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.7145    2.0625    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.0000    2.4750    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.7145   -0.4125    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    3.5724    2.0625    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  1  0  0  0  0
  2  3  2  0  0  0  0
  3  4  1  0  0  0  0
  4  5  2  0  0  0  0
  5  6  1  0  0  0  0
  6  7  2  0  0  0  0
  2  7  1  0  0  0  0
  6  8  1  0  0  0  0
  8  9  2  0  0  0  0
  8 10  1  0  0  0  0
 10 11  2  0  0  0  0
 11 12  1  0  0  0  0
 12 13  2  0  0  0  0
 13 14  1  0  0  0  0
 14 15  2  0  0  0  0
 10 15  1  0  0  0  0
 15 16  1  0  0  0  0
  5 16  1  0  0  0  0
 16 17  2  0  0  0  0
 14 18  1  0  0  0  0
 18 19  1  0  0  0  0
 12 20  1  0  0  0  0
  4 21  1  0  0  0  0
M  END
> <DATABASE_ID>
MMDBc0005307

> <DATABASE_NAME>
MIME

> <SMILES>
COC1=C2C(=O)C3=C(O)C=C(C)C=C3C(=O)C2=CC(O)=C1

> <INCHI_IDENTIFIER>
InChI=1S/C16H12O5/c1-7-3-9-13(11(18)4-7)16(20)14-10(15(9)19)5-8(17)6-12(14)21-2/h3-6,17-18H,1-2H3

> <INCHI_KEY>
UUNPIWCQMVNINR-UHFFFAOYSA-N

> <FORMULA>
C16H12O5

> <MOLECULAR_WEIGHT>
284.267

> <EXACT_MASS>
284.068473486

> <JCHEM_ACCEPTOR_COUNT>
5

> <JCHEM_ATOM_COUNT>
33

> <JCHEM_AVERAGE_POLARIZABILITY>
28.5874431031953

> <JCHEM_BIOAVAILABILITY>
1

> <JCHEM_DONOR_COUNT>
2

> <JCHEM_FORMAL_CHARGE>
0

> <JCHEM_GHOSE_FILTER>
1

> <JCHEM_IUPAC>
1,6-dihydroxy-8-methoxy-3-methyl-9,10-dihydroanthracene-9,10-dione

> <ALOGPS_LOGP>
2.94

> <JCHEM_LOGP>
3.317325554999999

> <ALOGPS_LOGS>
-3.55

> <JCHEM_MDDR_LIKE_RULE>
0

> <JCHEM_NUMBER_OF_RINGS>
3

> <JCHEM_PHYSIOLOGICAL_CHARGE>
0

> <JCHEM_PKA>
8.390119943669944

> <JCHEM_PKA_STRONGEST_ACIDIC>
7.283268017596118

> <JCHEM_PKA_STRONGEST_BASIC>
-4.893921085387394

> <JCHEM_POLAR_SURFACE_AREA>
83.83000000000001

> <JCHEM_REFRACTIVITY>
76.6172

> <JCHEM_ROTATABLE_BOND_COUNT>
1

> <JCHEM_RULE_OF_FIVE>
1

> <ALOGPS_SOLUBILITY>
7.98e-02 g/l

> <JCHEM_TRADITIONAL_IUPAC>
questin

> <JCHEM_VEBER_RULE>
0

$$$$

HEADER    PROTEIN                                 24-APR-15   NONE
TITLE     NULL                                                        
COMPND    NULL                                                        
SOURCE    NULL                                                        
KEYWDS    NULL                                                        
EXPDTA    NULL                                                        
AUTHOR    Marvin                                                      
REVDAT   1   24-APR-15         0                                  
HETATM    1  C   UNK     0       9.336  -0.770   0.000  0.00  0.00           C+0
HETATM    2  C   UNK     0       8.002  -0.000   0.000  0.00  0.00           C+0
HETATM    3  C   UNK     0       8.002   1.540   0.000  0.00  0.00           C+0
HETATM    4  C   UNK     0       6.668   2.310   0.000  0.00  0.00           C+0
HETATM    5  C   UNK     0       5.335   1.540   0.000  0.00  0.00           C+0
HETATM    6  C   UNK     0       5.335   0.000   0.000  0.00  0.00           C+0
HETATM    7  C   UNK     0       6.668  -0.770   0.000  0.00  0.00           C+0
HETATM    8  C   UNK     0       4.001  -0.770   0.000  0.00  0.00           C+0
HETATM    9  O   UNK     0       4.001  -2.310   0.000  0.00  0.00           O+0
HETATM   10  C   UNK     0       2.667  -0.000   0.000  0.00  0.00           C+0
HETATM   11  C   UNK     0       1.334  -0.770   0.000  0.00  0.00           C+0
HETATM   12  C   UNK     0      -0.000   0.000   0.000  0.00  0.00           C+0
HETATM   13  C   UNK     0       0.000   1.540   0.000  0.00  0.00           C+0
HETATM   14  C   UNK     0       1.334   2.310   0.000  0.00  0.00           C+0
HETATM   15  C   UNK     0       2.667   1.540   0.000  0.00  0.00           C+0
HETATM   16  C   UNK     0       4.001   2.310   0.000  0.00  0.00           C+0
HETATM   17  O   UNK     0       4.001   3.850   0.000  0.00  0.00           O+0
HETATM   18  O   UNK     0       1.334   3.850   0.000  0.00  0.00           O+0
HETATM   19  C   UNK     0       0.000   4.620   0.000  0.00  0.00           C+0
HETATM   20  O   UNK     0      -1.334  -0.770   0.000  0.00  0.00           O+0
HETATM   21  O   UNK     0       6.668   3.850   0.000  0.00  0.00           O+0
CONECT    1    2                                                            
CONECT    2    1    3    7                                                  
CONECT    3    2    4                                                       
CONECT    4    3    5   21                                                  
CONECT    5    4    6   16                                                  
CONECT    6    5    7    8                                                  
CONECT    7    6    2                                                       
CONECT    8    6    9   10                                                  
CONECT    9    8                                                            
CONECT   10    8   11   15                                                  
CONECT   11   10   12                                                       
CONECT   12   11   13   20                                                  
CONECT   13   12   14                                                       
CONECT   14   13   15   18                                                  
CONECT   15   14   10   16                                                  
CONECT   16   15    5   17                                                  
CONECT   17   16                                                            
CONECT   18   14   19                                                       
CONECT   19   18                                                            
CONECT   20   12                                                            
CONECT   21    4                                                            
MASTER        0    0    0    0    0    0    0    0   21    0   46    0
END

Synonyms

Value	Source
1,6-Dihydroxy-3-methyl-8-(methyloxy)anthracene-9,10-dione	ChEBI
1,6-Dihydroxy-8-methoxy-3-methyl-9,10-anthraquinone	ChEBI
3,8-Dihydroxy-1-methoxy-6-methylanthracene-9,10-dione	ChEBI
Emodin-8-methyl ether	ChEBI

Molecular Formula

C₁₆H₁₂O₅

Average Mass

284.267

Monoisotopic Mass

284.068473486

IUPAC Name

1,6-dihydroxy-8-methoxy-3-methyl-9,10-dihydroanthracene-9,10-dione

Traditional Name

questin

CAS Registry Number

Not Available

SMILES

COC1=C2C(=O)C3=C(O)C=C(C)C=C3C(=O)C2=CC(O)=C1

InChI Identifier

InChI=1S/C16H12O5/c1-7-3-9-13(11(18)4-7)16(20)14-10(15(9)19)5-8(17)6-12(14)21-2/h3-6,17-18H,1-2H3

InChI Key

UUNPIWCQMVNINR-UHFFFAOYSA-N

Chemical Taxonomy

Description

Belongs to the class of organic compounds known as hydroxyanthraquinones. Hydroxyanthraquinones are compounds containing a hydroxyanthraquinone moiety, which consists of an anthracene bearing a quinone, and hydroxyl group.

Kingdom

Super Class

Class

Sub Class

Direct Parent

Hydroxyanthraquinones

Alternative Parents

Substituents

Hydroxyanthraquinone
Aryl ketone
Anisole
1-hydroxy-4-unsubstituted benzenoid
1-hydroxy-2-unsubstituted benzenoid
Alkyl aryl ether
Vinylogous acid
Ketone
Ether
Organic oxygen compound
Organic oxide
Hydrocarbon derivative
Organooxygen compound
Aromatic homopolycyclic compound

Molecular Framework

Aromatic homopolycyclic compounds

External Descriptors

hydroxyanthraquinones (CHEBI:16200 )
Anthraquinone type (C01448 )

Functional Ontology

Not Available

Physical Properties

State

Expected Solid

Predicted Properties

Property	Value	Source
Water Solubility	0.08 g/L	ALOGPS
logP	2.94	ALOGPS
logP	3.32	ChemAxon
logS	-3.6	ALOGPS
pKa (Strongest Acidic)	7.28	ChemAxon
pKa (Strongest Basic)	-4.9	ChemAxon
Physiological Charge	0	ChemAxon
Hydrogen Acceptor Count	5	ChemAxon
Hydrogen Donor Count	2	ChemAxon
Polar Surface Area	83.83 Å²	ChemAxon
Rotatable Bond Count	1	ChemAxon
Refractivity	76.62 m³·mol⁻¹	ChemAxon
Polarizability	28.59 Å³	ChemAxon
Number of Rings	3	ChemAxon
Bioavailability	Yes	ChemAxon
Rule of Five	Yes	ChemAxon
Ghose Filter	Yes	ChemAxon
Veber's Rule	No	ChemAxon
MDDR-like Rule	No	ChemAxon

Spectra

Spectrum Type	Description	Splash Key	Deposition Date	View
Predicted GC-MS	Predicted GC-MS Spectrum - GC-MS (TMS_2_1) - 70eV, Positive	Not Available	2022-08-08	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 10V, Positive	Not Available	2022-08-10	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 20V, Positive	Not Available	2022-08-10	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 40V, Positive	Not Available	2022-08-10	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 10V, Negative	Not Available	2022-08-10	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 20V, Negative	Not Available	2022-08-10	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 40V, Negative	Not Available	2022-08-10	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 100 MHz, H₂O, predicted)		2022-08-18	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 100 MHz, H₂O, predicted)		2022-08-18	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 1000 MHz, H₂O, predicted)		2022-08-18	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 1000 MHz, H₂O, predicted)		2022-08-18	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 200 MHz, H₂O, predicted)		2022-08-18	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 200 MHz, H₂O, predicted)		2022-08-18	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 300 MHz, H₂O, predicted)		2022-08-18	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 300 MHz, H₂O, predicted)		2022-08-18	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 400 MHz, H₂O, predicted)		2022-08-18	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 400 MHz, H₂O, predicted)		2022-08-18	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 500 MHz, H₂O, predicted)		2022-08-18	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 500 MHz, H₂O, predicted)		2022-08-18	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 600 MHz, H₂O, predicted)		2022-08-18	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 600 MHz, H₂O, predicted)		2022-08-18	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 700 MHz, H₂O, predicted)		2022-08-18	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 700 MHz, H₂O, predicted)		2022-08-18	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 800 MHz, H₂O, predicted)		2022-08-18	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 800 MHz, H₂O, predicted)		2022-08-18	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 900 MHz, H₂O, predicted)		2022-08-18	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 900 MHz, H₂O, predicted)		2022-08-18	View Spectrum

Biological Properties

Cellular Locations

Not Available

Biospecimen Locations

Not Available

Tissue Locations

Not Available

Associated OMIM IDs

114500 (Colorectal cancer)
610247 (Eosinophilic esophagitis)

Human Proteins and Enzymes

Protein ID	Protein Name	Protein Type	Uniprot ID	Species

Human Pathways

Pathways

Name	SMPDB/PathBank

Microbial Pathways

Pathways

This table shows at most 5 pathways. For the full list of associated pathways:

See All Associated Bacterial Pathways

Name	SMPDB/PathBank	Species

Metabolic Reactions

Reactions

This table shows at most 20 reactions. For the full list of associated reactions:

See All Associated Reactions

Reaction ID	Precursor	Product	Enzyme	Reaction Type	Data Source	Reference

Health Effects and Bioactivity

Health Outcome/Bioactivity	Metabolite Response/Effect	Evidence Type	Host and Biospecimen	Data Source	Reference

Microbial Sources

Superkingdom/Kingdom	Phylum	Total species	Hosts and Body Sites	Microbial Links
Eukaryota/Fungi	Ascomycota	9	Human sputum; Human ; Human feces	Metabolic reconstruction; Microbial culture
nah	3		Metabolic reconstruction
Eukaryota/Fungi	nah	1		Metabolic reconstruction

Exposure Sources

Other Exposures

Source Type	Data Source	Reference

Host Biospecimen and Location

Host and Biospecimen	Status	Mean	Std	Min	Max	Units	Age	Sex	Health Condition	Data Source	Reference

External Links

HMDB ID

Not Available

DrugBank ID

Not Available

Phenol Explorer Compound ID

Not Available

FooDB ID

Not Available

KNApSAcK ID

C00000570

Chemspider ID

Not Available

KEGG Compound ID

C01448

BioCyc ID

Not Available

BiGG ID

Not Available

Wikipedia Link

Not Available

METLIN ID

Not Available

PubChem Compound

160717

PDB ID

Not Available

ChEBI ID

16200

Food Biomarker Ontology

Not Available

CMMC Knowledgebase

UUNPIWCQMVNINR-UHFFFAOYSA-N

References

Synthesis Reference

Not Available

General References

Bansal P, Morgat A, Axelsen KB, Muthukrishnan V, Coudert E, Aimo L, Hyka-Nouspikel N, Gasteiger E, Kerhornou A, Neto TB, Pozzato M, Blatter MC, Ignatchenko A, Redaschi N, Bridge A: Rhea, the reaction knowledgebase in 2022. Nucleic Acids Res. 2022 Jan 7;50(D1):D693-D700. doi: 10.1093/nar/gkab1016. [PubMed:34755880 ]

Showing metabocard for Questin (MMDBc0005307)

MOL for #<Metabolite:0x00007fb494893028>

3D MOL for #<Metabolite:0x00007fb494893028>

3D SDF for #<Metabolite:0x00007fb494893028>

3D-SDF for #<Metabolite:0x00007fb494893028>

PDB for #<Metabolite:0x00007fb494893028>

3D PDB for #<Metabolite:0x00007fb494893028>

SMILES for #<Metabolite:0x00007fb494893028>

INCHI for #<Metabolite:0x00007fb494893028>

Structure for #<Metabolite:0x00007fb494893028>

3D Structure for #<Metabolite:0x00007fb494893028>