title: A20: more than one way to skin a cat.
abstract: In this issue of Molecular Cell, Skaug et al. (2011) propose a polyubiquitin-dependent, noncatalytic mechanism by which the deubiquitinase A20 inhibits IκB kinase and NF-κB activation.
authors.affiliation: Laboratory of Immune Cell Biology, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA.
authors.forename: Srinivasa M
authors.initials: SM
authors.lastname: Srinivasula
authors.forename: Jonathan D
authors.initials: JD
authors.lastname: Ashwell