Kingdoms of the Archaea

Igneococcales Terrestrial and marine active volcanic regions 

Archaeoglobales Sulphate reducing, oceanic hydrothermal vents 

5 orders of methanogens Energy from organic matter, produce methane 

Orders of kingdom korarchaeota Little known present in Yellowstone hot spring 

Orders of kingdom nanoarchaeota Found in hot vent off coast of Iceland 

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Most currently known small blue proteins are found either in bacteria or in eukarya. However, a small blue protein, halocyanin [74], was recently discovered in Natronobacterium pharaonis [75], The fact that this bacterium belongs to the kingdom of the archaea will require new deliberations as to when and where the precursor of the small blue proteins originated. 

Figure 3.4. Kingdoms of the Archaea (based on Tree of Life, 2004)...

Little is known about the kingdoms korarchaeota and nanoarchaeota. Genetic characteristics indicate that they are distinct kingdoms (or phyla) from each other and from the other kingdoms of the Archaea. Both are thermophilous. The former was discovered in a terrestrial hot spring in Yellowstone National Park, USA, while the discovery of the latter in a hot vent off the coast of Iceland occurred in 2002. Huber et ai, (2002) report that it is a symbiont with a member of the igneococcales. 

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