FIG. 1.
Composite model of respiratory electron transport chain components in the Sulfolobales. Inset table notes components identified in selected Sulfolobales. Sso, S. solfataricus; Sto, S. tokodaii; Sac, S. acidocaldarius; Mse, M. sedula; Aam, A. ambivalens; Sme, S. metallicus. Genome sequences are not yet available for organisms with a superscript 1. pmf, protein motive force.