Complementary substrate specificity and distinct quaternary assembly of the Escherichia coli aerobic and anaerobic β-oxidation trifunctional enzyme complexes
The cover image shows an electron density sliced map of the soluble heterotetrameric aerobic trifunctional enzyme (EcTFE, upper left) and membrane associated heterooctameric anaerobic trifunctional enzyme (anEcTFE, lower right) complexes from E. coli generated from experimental SAXS scattering by the DENSSWeb server and fi tted with atomic models. The density map is shown at contour levels 3, 5 and 8 sigmas in green, yellow and red surfaces, respectively. For further information, see the article by Sah-Teli and colleagues (pages 1975–1994). Image courtesy of Rajaram Venkatesan.