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Cho et al. reconstruct the regulatory and functional architecture of the E. coli genome by integrating data from several high-throughput measurements. The detailed map will allow the development of improved models of the networks that control the bacterium's transcription and translation.
Cytochrome P450 enzymes metabolize drugs and contribute to harmful drug-drug interactions. To decipher p450 activities, Veith et al. screen ∼17,000 compounds, including >1,000 FDA-approved drugs, against five important P450 isozymes and identify chemical structures that are enriched in compounds active against specific isozymes.