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Cell survival decisions in Drosophila and mammals are governed by complex antagonistic interactions between inhibitor-of-apoptosis proteins (IAPs), IAP inhibitors and caspases. Such interactions ensure that the levels and activities of these proteins are appropriate for life or death.
The structure of a minor group human rhinovirus in complex with a receptor fragment reveals how the ligand-binding repeats of LDL receptor family proteins bind to these viruses and also suggests a preferred mode for partner recognition by these repeats.
