Fueled by the chemicals dissolved in the vent fluids, these areas are often home to large and diverse communities of thermophilic, halophilic and other extremophilic prokaryotic microorganisms (such as those of the sulfide-oxidizing Beggiatoa genus), often arranged in large bacterial mats near cold seeps.
A candidate division, candidate phylum or candidate division-level is a lineage of Prokaryotic organisms for which no cultured representatives have been found, but evidence of the existence of the clade has been obtained by 16S rRNA metagenomic analysis of environmental samples.
EF-P is the prokaryotic homolog of eIF5A, which is also modified post-translationally in a similar but distinct way.
Although plastids are prokaryotic descendants and still have their prokaryotic translational machinery, SD-like sequences are not required in green alga Chlamydomonas reinhardtii chloroplasts.
The best known of the myxobacteria, Myxococcus xanthus and Stigmatella aurantiaca, are studied in various laboratories as prokaryotic models of development.