Cache Domains That are Homologous to, but Different from PAS Domains Comprise the Largest Superfamily of Extracellular Sensors in Prokaryotes
Fig 6
Relative abundance of known extracellular sensory domains in prokaryotes.
Domain counts were obtained by running Pfamscan against a dataset of non-redundant prokaryotic extracellular sequences, which was also used for HMM construction (see Methods).