Multi-component rotary archaellum, consisting of at least eight protein constituents, ArlAl (213 aas; 1 N-terminal TMS; archaellinA1), ArlA2 (220 aas; 1 N-terminal TMS; archaellinA2), AlrD (176 aas; archaellin D; may be N-terminally truncated; 0 TMSs), ArlF (145 aas; 1 N-terminal TMS), ArlG (149 aas), ArlH (249 aas with possibly 4 or 5 moderately hydrophobic TMSs), ArlI (554 aas, 0 TMSs), and ArlJ (580 aas and 0 TMSs).  These last two proteins may function as the motor (Nuno de Sousa Machado et al. 2022).