''Thermales'' is an
order of bacteria belonging to the ''
Deinococcota
''Deinococcota'' (synonym, ''Deinococcus-Thermus'') is a phylum of bacteria with a single class, ''Deinococci'', that are highly resistant to environmental hazards, also known as extremophiles.
These bacteria have thick cell walls that give them ...
''
phylum.
They are particularly resistant to heat, and live in the benthic zone of the Gulf of Mexico.
Members of the order ''Thermales'' can be distinguished from all other bacteria through molecular signatures consisting of
conserved signature indels Conserved signature inserts and deletions (CSIs) in protein sequences provide an important category of molecular markers for understanding phylogenetic relationships. CSIs, brought about by rare genetic changes, provide useful phylogenetic markers ...
(CSIs) and conserved signature proteins (CSPs) that are exclusively present in members of this order. Specifically, six CSIs were identified in the following proteins:
DNA topoisomerase I, ABC transporter permease, citrate synthase,
phosphoribosylformylglycinamidine synthase
In enzymology, a phosphoribosylformylglycinamidine synthase () is an enzyme that catalyzes the chemical reaction
:ATP + ''N''2-formyl-''N''1-(5-phospho-D-ribosyl)glycinamide + L-glutamine + H2O \rightleftharpoons ADP + phosphate + 2-(formamido)- ...
, pyruvate dehydrogenase and alpha-glucan phosphorylase.
51 CSPs were also found to be exclusively shared by members of this order.
In addition, a 76 aa CSI is present in the protein
SecA
The SecA protein is a cell membrane associated subunit of the eubacterial Sec or Type II secretory pathway, a system which is responsible for the secretion of proteins through the cell membrane. Within this system the SecA ATPase forms a translo ...
preprotein translocase which is specific to all members of the order ''Thermales'' as well as ''Hydrogenibacillus schlegelii'' (also an thermophilic species).
Based on studies on other CSIs and CSPs, it is likely that some of these CSIs and CSPs could have implications in the thermophilic phenotype of ''Thermales'' species.
Phylogeny
See also
*
List of bacteria genera This article lists the genera of the bacteria. The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) and National Center for Biotechnology Information (NCBI). However many taxonomic names are ...
*
List of bacterial orders
This article lists the orders of the Bacteria. The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) and National Center for Biotechnology Information (NCBI)
and the phylogeny is based on 16S ...
References
Deinococcota
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