si_0664 Ribosome_activity_modulation Ribosome modulation factor si_0664 Ribosome_activity_modulation Ribosome hibernation protein YhbH si_0664 Ribosome_activity_modulation Ribosome hibernation protein YfiA si_0664 Ribosome_activity_modulation Stationary-phase-induced ribosome-associated protein si_0664 Ribosome_activity_modulation Ribosomal subunit interface protein