Multiple R-groups (monovalent fragments) are implicitly accessible within most of the molecular structures that populate large structural databases. R-group searching would desirably consider pIC50… (More)
Currently, the only way to identify nongenotoxic hepatocarcinogens is through long-term repeat dose studies such as the 2 year rodent carcinogenicity assay. Such assays are both time consuming and… (More)
The 5S rRNAs from Bombyx mori and Dictyostelium discoideum were end-labeled with [32-P] at either the 5' or 3' end and sequenced using enzymatic digestion. The secondary structure of these molecules… (More)
Eukaryotic 5S rRNA sequences from 34 diverse species were compared by the following method: (1) The sequences were aligned; (2) the positions of substitutions were located by comparison of all… (More)