Members of the third domain of life, the Archaea, possess structural, physiological, biochemical and genetic features distinct from Bacteria and Eukarya and, therefore, have drawn considerable scientific interest. Physiological, biochemical and molecular analyses have revealed many novel biological processes in these important prokaryotes. However, assessment of the function of genes in vivo th...

The discovery of the third domain of life, the Archaea, is one of the most exciting findings of the last century. These remarkable prokaryotes are well known for their adaptations to extreme environments; however, Archaea have also conquered moderate environments. Many of the archaeal biochemical processes, such as methane production, are unique in nature and therefore of great scientific inter...

Autor do korespondencji: Anna Węgrzyn – Ph.D., e-mail: [email protected] Introduction Archaea are prokaryotic micro-organisms which are able to live only in extreme environments. Based on state-of-the-art those micro-organisms can be divided into three groups: methanogens, thermoacidophiles and halophiles [1]. Those micro-organisms are considered to be pioneer organisms, inhabiting most adv...

Archaea are prokaryotic organisms distinct from bacteria in the structural and molecular biological sense, and these microorganisms are known to thrive mostly at extreme environments. In particular, most studies on halophilic archaea have been focused on environmental and ecological researches. However, new species of halophilic archaea are being isolated and identified from high salt-fermented...

Abstract The ribosome is a universally conserved macromolecular machine responsible for the translation of mRNAs into proteins. synthesis ribosomes crucial task that has been well characterized in bacteria and eukarya, but not archaea. Here we summarize our current understanding biogenesis archaea how it might help to further answer evolutionary questions.

Although they are abundant and even dominant members of animal microbiomes (microbiotas), from sponges and termites to mice and cattle, archaea in our own microbiomes have received much less attention than their bacterial counterparts. The fact that human-associated archaea have been relatively little-studied may be at least partially attributed to the lack of any established archaeal human pat...

Archaea have been detected in several ecological niches of the human body such as the large intestine, skin, vagina as well as the oral cavity. At present, archaea are recognized as nonpathogenic microorganisms. However, some data indicate that they may be involved in the etiopathogenesis of several diseases, including intestinal diseases as well as oral diseases: periodontitis, peri-implantiti...