Fig. 5: CryoEM structure of the L. aerophila archaellum.
From: Structure of a functional archaellum in Bacteria of the Chloroflexota phylum
a, CryoEM-derived map at 2.7 Å resolution in surface view with fitted-chain representation. Representation of the archaellum structure in side, top and end-on views showing the core of alpha helices and globular domain facing outwards. Three left-handed strands are coloured accordingly. Scale bars, 100 Å. b, CryoEM-derived map at 3.4 Å of asymmetric filament reconstruction. The EM map shows a slight tilt and is coloured by fitted chains. Representation of the tilted archaellum filament in side view, top view and end-on view. Scale bars, 100 Å. c, Additional dead-end protrusions corresponded to the residues Thr145 and Thr66, likely to be O-glycosylations. d, Each subunit harbours a metal-binding site coordinated by residues D121, D127, E131 and E134.
