Schultz, T.W.; Sinks, G.D.; Cronin, M.T.D. Quinone-induced toxicity to Tetrahymena: structure-activity relationships. Aquat. Toxicol. 1997, 39, 3-4, 267–278.

QsarDB Repository

Schultz, T.W.; Sinks, G.D.; Cronin, M.T.D. Quinone-induced toxicity to Tetrahymena: structure-activity relationships. Aquat. Toxicol. 1997, 39, 3-4, 267–278.

QDB archive DOI: 10.15152/QDB.34   DOWNLOAD

QsarDB content

Property pIGC50: 40-h Tetrahymena toxicity as log(1/IGC50) [log(L/mmol)]

Citing

When using this QDB archive, please cite (see details) it together with the original article:

Metadata

Show simple item record

dc.date.accessioned2012-05-23T15:45:09Z
dc.date.available2012-05-23T15:45:09Z
dc.date.issued2012-05-23
dc.identifier.urihttp://hdl.handle.net/10967/34
dc.identifier.urihttp://dx.doi.org/10.15152/QDB.34
dc.description.abstractThe aquatic toxicities (log(IGC50-1)) of 22 quinones were evaluated in the static Tetrahymena pyriformis population growth assay. A toxicity in excess of baseline was associated with each chemical eliciting a response. The ortho-quinones were the most toxic; internal quinones, with benzenoid substitution on both sides of the quinoid rings, were not toxic at saturation. Ring substitution of 1,4-benzoquinone resulted in a graded toxic response. Substitution by electron-donating, methoxy or hydroxy groups decreased the toxicity. The position of ring substitution was also important, with 2,5-substitution being less toxic than 2,6-substitution. The fully substituted tetramethyl and tetrachloro derivatives, quinones which cannot conjugate or arylate protein thiols, were significantly less toxic than 1,4-benzoquinone. Due to their molecular structure, quinones may act as soft electrophiles and/or redox cyclers. This mixture of mechanisms of toxic action precludes high-quality, quantitative, structure-toxicity relationships. The toxic potency was found to be independent of the 1-octanol/water partition coefficient, one-electron redox potential and lowest unoccupied molecular orbital energy.
dc.publisherVillu Ruusmann
dc.rightsAttribution 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.titleSchultz, T.W.; Sinks, G.D.; Cronin, M.T.D. Quinone-induced toxicity to Tetrahymena: structure-activity relationships. Aquat. Toxicol. 1997, 39, 3-4, 267–278.
qdb.property.endpoint6. Other (Acute toxicity to ciliate protozoa)
qdb.property.speciesTetrahymena pyriformis
qdb.descriptor.applicationClogP
bibtex.entryarticle
bibtex.entry.authorSchultz, T. W.
bibtex.entry.authorSinks, G. D.
bibtex.entry.authorCronin, M. T. D.
bibtex.entry.doi10.1016/S0166-445X(97)00031-3
bibtex.entry.journalAquat. Toxicol.
bibtex.entry.number3-4
bibtex.entry.pages267–278
bibtex.entry.titleQuinone-induced toxicity to Tetrahymena: structure-activity relationships
bibtex.entry.volume39
bibtex.entry.year1997


Files in this item

NameDescriptionFormatSizeView
S0166445X97000313.qdb.zipn/aapplication/zip3.078KbView/Open
Files associated with this item are distributed
under Creative Commons license.

This item appears in the following Collection(s)

Show simple item record