Fig. 1: CryoEM map of the M. villosus archaellum.
From: An archaellum filament composed of two alternating subunits
a Surface view; b, c Cross-sections parallel and perpendicular to the filament’s long axis, respectively. The two alternating archaellin densities are coloured in cyan (ArlB1) and sand (ArlB2). In a, the helical parameters (rise, 33.4 Å; twist, −71.8°) are shown. In d, the head domains of the two archaellins are highlighted with a dashed line and the density maps of each subunit are shown left (ArlB1, cyan) and right (ArlB2, sand) of the filament (arrows). Scale bar in a, b and c, 50 Å.
