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<title>Halobacterium salinarum</title>
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<span id="openzim-page-title" class="mw-page-title-main"><i>Halobacterium salinarum</i></span>
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<th colspan="2" style="color:inherit; text-align: center; background-color: rgb(195,245,250)"><i>Halobacterium salinarum</i>
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<td colspan="2" style="text-align: center">
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<td colspan="2" style="text-align: center; font-size: 88%"><i>Halobacterium salinarum</i> NRC-1<br><small>Size bar = 270 nm</small>
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<th colspan="2" style="color:inherit; min-width:15em; text-align: center; background-color: rgb(195,245,250)"><a href="Taxonomy_(biology)" title="Taxonomy (biology)">Scientific classification</a> <span class=" taxobox-edit-taxonomy skin-invert" style="font-size:smaller; float:right; padding-right:0.4em; margin-left:-3em;"><span typeof="mw:File"></span></span>
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<td>Domain:
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<td><a href="Archaea" title="Archaea">Archaea</a>
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<td>Kingdom:
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<td><a href="Methanobacteriati" title="Methanobacteriati">Methanobacteriati</a>
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<td>Phylum:
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<td><a href="Methanobacteriota" title="Methanobacteriota">Methanobacteriota</a>
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<td>Class:
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<td><a href="Halobacteria" class="mw-redirect" title="Halobacteria">Halobacteria</a>
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<td>Order:
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<td><a href="Halobacteriales" title="Halobacteriales">Halobacteriales</a>
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<td>Family:
</td>
<td><a href="Halobacteriaceae" title="Halobacteriaceae">Halobacteriaceae</a>
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<td>Genus:
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<td><a href="Halobacterium" title="Halobacterium"><i>Halobacterium</i></a>
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<tr class="taxonrow">
<td>Species:
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<td><div style="display:inline" class="species"><i><b>H.&nbsp;salinarum</b></i></div>
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<th colspan="2" style="color:inherit; text-align: center; background-color: rgb(195,245,250)"><a href="Binomial_nomenclature" title="Binomial nomenclature">Binomial name</a>
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<td colspan="2" style="text-align: center"><b><span class="binomial"><i>Halobacterium salinarum</i></span></b><br><div style="font-size: 85%;">corrig. (Harrison and Kennedy 1922) <br> Elazari-Volcani 1957</div>
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<th colspan="2" style="color:inherit; text-align: center; background-color: rgb(195,245,250)"><a href="Synonym_(taxonomy)" title="Synonym (taxonomy)">Synonyms</a>
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<td colspan="2" style="text-align: left">
<p><i>Pseudomonas salinaria</i> <small>Harrison and Kennedy 1922</small> <br><i>Serratia salinaria</i> <small>(Harrison and Kennedy 1922) Bergey <i>et al.</i> 1923</small> <br> <i>Flavobacterium</i> (subgen. <i>Halobacterium</i>) <i>salinarium</i> <small>(Harrison and Kennedy 1922) Elazari-volcani 1940</small> <br> <i>Halobacter salinaria</i> <small>(Harrison and Kennedy 1922) Anderson 1954</small> <br> <i>Halobacterium salinarium</i> <small>(Harrison and Kennedy 1922) Elazari-Volcani 1957</small> <br> <i>Halobacterium halobium</i> <small>(Petter 1931) Elazari-Volcani 1957</small> <br> <i>Halobacterium cutirubrum</i> <small>(Lochhead 1934) Elazari-Volcani 1957</small>
<i>Halobacterium piscialsi</i> <small>(Yachai et al. 2008)</small><sup id="cite_ref-pmid22058320_1-0" class="reference"><a href="#cite_note-pmid22058320-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>
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</style><p><i><b>Halobacterium salinarum</b></i>, formerly known as <i><b>Halobacterium cutirubrum</b></i> or <i><b>Halobacterium halobium</b></i>, is an extremely <a href="Halophile" title="Halophile">halophilic</a> <a href="Ocean" title="Ocean">marine</a> <a href="Obligate_aerobic" class="mw-redirect" title="Obligate aerobic">obligate aerobic</a> archaeon.<sup id="cite_ref-MicrobioJ_2-0" class="reference"><a href="#cite_note-MicrobioJ-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Despite its name, this is not a <a href="Bacteria" title="Bacteria">bacterium</a>, but a member of the domain <a href="Archaea" title="Archaea">Archaea</a>.<sup id="cite_ref-DasSarma_3-0" class="reference"><a href="#cite_note-DasSarma-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> It is found in salted fish, <a href="Hide_(skin)" title="Hide (skin)">hides</a>, <a href="Hypersaline_lake" title="Hypersaline lake">hypersaline lakes</a>, and <a href="Saltern" title="Saltern">salterns</a>. As these salterns reach the minimum salinity limits for extreme halophiles, their waters become purple or reddish color due to the high densities of halophilic Archaea.<sup id="cite_ref-DasSarma_3-1" class="reference"><a href="#cite_note-DasSarma-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> <i>H. salinarum</i> has also been found in high-salt food such as <a href="Salt_pork" title="Salt pork">salt pork</a>, marine fish, and <a href="Sausages" class="mw-redirect" title="Sausages">sausages</a>. The ability of <i>H. salinarum</i> to live at such high salt concentrations has led to its classification as an <a href="Extremophile" title="Extremophile">extremophile</a>.
</p><meta property="mw:PageProp/toc">
<div class="mw-heading mw-heading2"><h2 id="Cell_morphology_and_metabolism">Cell morphology and metabolism</h2></div>
<p>Halobacteria are single-celled, rod-shaped microorganisms that are among the most ancient forms of life and appeared on Earth billions of years ago. The membrane consists of a single <a href="Lipid_bilayer" title="Lipid bilayer">lipid bilayer</a> surrounded by an <a href="S-layer" title="S-layer">S-layer</a>.<sup id="cite_ref-Ng_4-0" class="reference"><a href="#cite_note-Ng-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> The S-layer is made of a cell-surface <a href="Glycoprotein" title="Glycoprotein">glycoprotein</a> that accounts for approximately 50% of the cell surface <a href="Proteins" class="mw-redirect" title="Proteins">proteins</a>.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> These proteins form a lattice in the membrane. Sulfate residues are abundant on the <a href="Glycan" title="Glycan">glycan</a> chains of the glycoprotein, giving it a negative charge. The negative charge is believed to stabilize the lattice in high-salt conditions.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup>
</p><p><a href="Amino_acid" title="Amino acid">Amino acids</a> are the main source of chemical energy for <i>H. salinarum</i>, particularly <a href="Arginine" title="Arginine">arginine</a> and <a href="Aspartate" class="mw-redirect" title="Aspartate">aspartate</a>, though they are able to metabolize other amino acids, as well.<sup id="cite_ref-Ng_4-1" class="reference"><a href="#cite_note-Ng-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> <i>H. salinarum</i> have been reported to be unable to grow on sugars, and therefore need to encode enzymes capable of performing <a href="Gluconeogenesis" title="Gluconeogenesis">gluconeogenesis</a> to create sugars. Although <i>H. salinarum</i> is unable to catabolize glucose, the <a href="Transcription_factor" title="Transcription factor">transcription factor</a> TrmB has been proven to regulate the gluconeogenic production of sugars found on the S-layer glycoprotein.
</p>
<div class="mw-heading mw-heading2"><h2 id="Adaptation_to_extreme_conditions">Adaptation to extreme conditions</h2></div>
<div class="mw-heading mw-heading3"><h3 id="High_salt">High salt</h3></div>
<p>To survive in extremely salty environments, this archaeon—as with other halophilic Archaeal species—utilizes <a href="Compatible_solutes" class="mw-redirect" title="Compatible solutes">compatible solutes</a> (in particular, <a href="Potassium_chloride" title="Potassium chloride">potassium chloride</a>) to reduce osmotic stress.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> Potassium levels are not at <a href="Diffusion_equilibrium" class="mw-redirect" title="Diffusion equilibrium">equilibrium</a> with the environment, so <i>H. salinarum</i> express multiple <a href="Active_transport" title="Active transport">active transporters</a> that pump potassium into the cell.<sup id="cite_ref-Ng_4-2" class="reference"><a href="#cite_note-Ng-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup>
At extremely high salt concentrations, <a href="Protein_precipitation" title="Protein precipitation">protein precipitation</a> will occur. To prevent the salting out of proteins, <i>H. salinarum</i> encodes mainly acidic proteins. The average <a href="Isoelectric_point" title="Isoelectric point">isoelectric point</a> of <i>H. salinarum</i> proteins is 5.03.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> These highly acidic proteins are overwhelmingly negative in charge and are able to remain in solution even at high salt concentrations.<sup id="cite_ref-DasSarma_3-2" class="reference"><a href="#cite_note-DasSarma-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading3"><h3 id="Low_oxygen_and_phototrophy">Low oxygen and phototrophy</h3></div>

<p><i>H. salinarum</i> can grow to such densities in salt ponds that oxygen is quickly depleted. Though it is an <a href="Obligate_aerobe" title="Obligate aerobe">obligate aerobe</a>, it is able to survive in low-oxygen conditions by utilizing <a href="Light_energy" class="mw-redirect" title="Light energy">light energy</a>. <i>H. salinarum</i> expresses the membrane protein <a href="Bacteriorhodopsin" title="Bacteriorhodopsin">bacteriorhodopsin</a>,<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> which acts as a light-driven proton pump. It consists of two parts: the 7-transmembrane protein, bacterioopsin, and the light-sensitive cofactor, <a href="Retinal" title="Retinal">retinal</a>. Upon absorption of a <a href="Photon" title="Photon">photon</a>, retinal changes its conformation, causing a conformational change in the bacterioopsin protein, as well, which drives proton transport.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> The proton gradient formed thereby can then be used to generate chemical energy via <a href="ATP_synthase" title="ATP synthase">ATP synthase</a>.
</p><p>To obtain more oxygen, <i>H. salinarum</i> produce gas vesicles, which allow them to float to the surface where oxygen levels are higher and more light is available.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> These vesicles are complex structures made of proteins encoded by at least 14 genes.<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> Gas vesicles were first discovered in H. salinarum in 1967.<sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading3"><h3 id="UV_protection_and_color">UV protection and color</h3></div>

<p>There is little protection from the Sun in salt ponds, so <i>H. salinarum</i> are often exposed to high amounts of <a href="Ultraviolet" title="Ultraviolet">UV</a> radiation. To compensate, they have evolved a sophisticated <a href="DNA_repair" title="DNA repair">DNA repair</a> mechanism. The genome encodes DNA repair enzymes homologous to those in both bacteria and eukaryotes.<sup id="cite_ref-DasSarma_3-3" class="reference"><a href="#cite_note-DasSarma-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> This allows <i>H. salinarum</i> to repair damage to DNA faster and more efficiently than other organisms and allows them to be much more UV-tolerant.
</p><p>Its red color is due primarily to the presence of <a href="Bacterioruberin" class="mw-redirect" title="Bacterioruberin">bacterioruberin</a>, a 50 carbon <a href="Carotenoid" title="Carotenoid">carotenoid</a> Alcohol (<a href="Polyol" title="Polyol">polyol</a>) pigment present within the membrane of <i>H. salinarum.</i> The primary role of bacterioruberin in the cell is to protect against <a href="DNA" title="DNA">DNA</a> damage incurred by UV light.<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> This protection is not, however, due to the ability of bacterioruberin to absorb UV light. Bacterioruberin protects the DNA by acting as an <a href="Antioxidant" title="Antioxidant">antioxidant</a>, rather than directly blocking UV light.<sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> It is able to protect the cell from <a href="Reactive_oxygen_species" title="Reactive oxygen species">reactive oxygen species</a> produced from exposure to UV by acting as a target. The bacterioruberin <a href="Radical_(chemistry)" title="Radical (chemistry)">radical</a> produced is less reactive than the initial radical, and will likely react with another radical, resulting in termination of the radical chain reaction.<sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup>
</p><p><i>H. salinarum</i> has been found to be responsible for the bright pink or red appearance of some bodies of <a href="Hypersaline_lake" title="Hypersaline lake">hypersaline lakes</a>, including <a href="Pink_lake" title="Pink lake">pink lakes</a>, such as the lake in <a href="Melbourne" title="Melbourne">Melbourne</a>'s <a href="Westgate_Park" title="Westgate Park">Westgate Park</a>; with the exact colour of the lake depending on the balance between the alga <i><a href="Dunaliella_salina" title="Dunaliella salina">Dunaliella salina</a></i> and <i>H. salinarium</i>, with salt concentration having a direct impact.<sup id="cite_ref-19" class="reference"><a href="#cite_note-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-20" class="reference"><a href="#cite_note-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup> However, recent studies at <a href="Lake_Hillier" title="Lake Hillier">Lake Hillier</a> in <a href="Western_Australia" title="Western Australia">Western Australia</a> have shown that other bacteria, notably <i><a href="Salinibacter_ruber" title="Salinibacter ruber">Salinibacter ruber</a></i>, along with algal and other factors, cause the pink color of these lakes.<sup id="cite_ref-Salleh_2022_21-0" class="reference"><a href="#cite_note-Salleh_2022-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-discovery_22-0" class="reference"><a href="#cite_note-discovery-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-outback_23-0" class="reference"><a href="#cite_note-outback-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-cassella_24-0" class="reference"><a href="#cite_note-cassella-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup> The researchers found 10 species of halophilic bacteria and archaea as well as several species of <a href="Dunaliella" title="Dunaliella">Dunaliella</a> algae, nearly all of which contain some pink, red or <a href="Salmon_(color)" title="Salmon (color)">salmon-coloured</a> pigment.<sup id="cite_ref-outback_23-1" class="reference"><a href="#cite_note-outback-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-discovery_22-1" class="reference"><a href="#cite_note-discovery-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading3"><h3 id="Protection_against_ionizing_radiation_and_desiccation">Protection against ionizing radiation and desiccation</h3></div>
<p><i>H. salinarum</i> is <a href="Polyploid" class="mw-redirect" title="Polyploid">polyploid</a><sup id="cite_ref-pmid21265763_25-0" class="reference"><a href="#cite_note-pmid21265763-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup> and highly resistant to <a href="Ionizing_radiation" title="Ionizing radiation">ionizing radiation</a> and <a href="Desiccation" title="Desiccation">desiccation</a>, conditions that induce <a href="DNA" title="DNA">DNA</a> double-strand breaks.<sup id="cite_ref-pmid15844015_26-0" class="reference"><a href="#cite_note-pmid15844015-26"><span class="cite-bracket">[</span>26<span class="cite-bracket">]</span></a></sup> Although chromosomes are initially shattered into many fragments, complete <a href="Chromosome" title="Chromosome">chromosomes</a> are regenerated by making use of over-lapping fragments. Regeneration occurs by a process involving DNA <a href="Single-stranded_binding_protein" title="Single-stranded binding protein">single-stranded binding protein</a> and is likely a form of <a href="Homologous_recombination" title="Homologous recombination">homologous recombinational</a> repair.<sup id="cite_ref-pmid17903038_27-0" class="reference"><a href="#cite_note-pmid17903038-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="Genome">Genome</h2></div>
<p>Whole genome sequences are available for two strains of <i>H. salinarum</i>, NRC-1<sup id="cite_ref-Ng_4-3" class="reference"><a href="#cite_note-Ng-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> and R1.<sup id="cite_ref-28" class="reference"><a href="#cite_note-28"><span class="cite-bracket">[</span>28<span class="cite-bracket">]</span></a></sup> The Halobacterium sp. NRC-1 genome consists of 2,571,010 base pairs on one large chromosome and two mini-chromosomes. The genome encodes 2,360 predicted proteins.<sup id="cite_ref-Ng_4-4" class="reference"><a href="#cite_note-Ng-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> The large chromosome is very G-C rich (68%).<sup id="cite_ref-29" class="reference"><a href="#cite_note-29"><span class="cite-bracket">[</span>29<span class="cite-bracket">]</span></a></sup> High <a href="GC-content" title="GC-content">GC-content</a> of the genome increases stability in extreme environments.
Whole <a href="Proteome" title="Proteome">proteome</a> comparisons show the definite archaeal nature of this halophile with additional similarities to the Gram-positive <i><a href="Bacillus_subtilis" title="Bacillus subtilis">Bacillus subtilis</a></i> and other bacteria.
</p>
<div class="mw-heading mw-heading2"><h2 id="As_a_model_organism">As a model organism</h2></div>
<p><i>H. salinarum</i> is as easy to culture as <i><a href="Escherichia_coli" title="Escherichia coli">E. coli</a></i> and serves as an excellent model system. Methods for gene replacement and systematic <a href="Gene_knockout" title="Gene knockout">knockout</a> have been developed,<sup id="cite_ref-30" class="reference"><a href="#cite_note-30"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup> so <i>H. salinarum</i> is an ideal candidate for the study of archaeal genetics and <a href="Functional_genomics" title="Functional genomics">functional genomics</a>.
</p>
<div class="mw-heading mw-heading2"><h2 id="For_hydrogen_production">For hydrogen production</h2></div>
<p><a href="Hydrogen_production" title="Hydrogen production">Hydrogen production</a> using <i>H. salinarum</i> coupled to a hydrogenase donor like <i>E. coli</i> are reported in literature.<sup id="cite_ref-31" class="reference"><a href="#cite_note-31"><span class="cite-bracket">[</span>31<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="Claimed_antiquity_of_DNA_samples">Claimed antiquity of DNA samples</h2></div>
<p>In the 1990s there were claims that DNA samples from Halobacteria from salt formations were millions of years old. Later analysis was unable to replicate the findings.<sup id="cite_ref-PääboPoinar2004_32-0" class="reference"><a href="#cite_note-PääboPoinar2004-32"><span class="cite-bracket">[</span>32<span class="cite-bracket">]</span></a></sup>
</p><p>Then in 2009 it was claimed that a sample of a close genetic relative of <i>H. salinarum</i> encapsulated in salt allowed for the recovery of <a href="Ancient_DNA" title="Ancient DNA">ancient DNA</a> fragments estimated at 121 million years old.<sup id="cite_ref-33" class="reference"><a href="#cite_note-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup> The curing salt had been derived from a mine in <a href="Saskatchewan" title="Saskatchewan">Saskatchewan</a>, the site of the most recent sample described by Jong Soo Park of <a href="Dalhousie_University" title="Dalhousie University">Dalhousie University</a> in <a href="Halifax_Regional_Municipality" class="mw-redirect" title="Halifax Regional Municipality">Halifax</a>, Nova Scotia, Canada.<sup id="cite_ref-34" class="reference"><a href="#cite_note-34"><span class="cite-bracket">[</span>34<span class="cite-bracket">]</span></a></sup> Russell Vreeland of Ancient Biomaterials Institute of <a href="West_Chester_University" title="West Chester University">West Chester University</a> in <a href="Pennsylvania" title="Pennsylvania">Pennsylvania</a>, USA, performed an analysis of all known types of halophilic bacteria, which yielded the finding that Park's bacteria contained six segments of <a href="DNA" title="DNA">DNA</a> never seen before in halophiles. Vreeland also tracked down the buffalo skin and determined that the salt came from the same mine as Park's sample. He also claimed to discover a <a href="Halophile" title="Halophile">halophile</a> estimated at 250 million years old in <a href="New_Mexico" title="New Mexico">New Mexico</a>.<sup id="cite_ref-35" class="reference"><a href="#cite_note-35"><span class="cite-bracket">[</span>35<span class="cite-bracket">]</span></a></sup> However, his findings date the crystal surrounding the bacteria, and DNA analysis suggests the bacteria themselves are likely to be less ancient.<sup id="cite_ref-36" class="reference"><a href="#cite_note-36"><span class="cite-bracket">[</span>36<span class="cite-bracket">]</span></a></sup>
</p><p>In 2022, a study in <i><a href="Nature_(journal)" title="Nature (journal)">Nature</a></i> reported that two-million year old preserved genetic material from many species was found in Greenland, and these sequences are currently considered the oldest confirmed DNA discovered, of any species.<sup id="cite_ref-NYT-20221207_37-0" class="reference"><a href="#cite_note-NYT-20221207-37"><span class="cite-bracket">[</span>37<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-NAT-20221207_38-0" class="reference"><a href="#cite_note-NAT-20221207-38"><span class="cite-bracket">[</span>38<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>
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<div class="mw-heading mw-heading2"><h2 id="Further_reading">Further reading</h2></div>
<ul><li><cite id="CITEREFHoriaDulmageGillumBain2014" class="citation journal cs1">Horia, Todor; Dulmage, Keely; Gillum, Nicholas; Bain, James; Muehlbauer, Michael; Schmid, Amy (2014). <a rel="nofollow" class="external text" href="https://doi.org/10.1111%2Fmmi.12726">"A transcription factor links growth rate and metabolism in the hypersaline adapted archaeon Halobacterium salinarum"</a>. <i>Molecular Microbiology</i>. <b>93</b> (6): <span class="nowrap">1172–</span>1182. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.1111%2Fmmi.12726">10.1111/mmi.12726</a></span>. <a href="PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a>&nbsp;<a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/25060603">25060603</a>.</cite></li>
<li><cite id="CITEREFKahakiBabaeipourMemariMofid2014" class="citation journal cs1">Kahaki, Fatemeh Abarghooi; Babaeipour, Valiollah; Memari, Hamid Rajabi; Mofid, Mohammad Reza (2014). "High Overexpression and Purification of Optimized Bacterio-Opsin from Halobacterium Salinarum R1 in E-coli". <i>Applied Biochemistry and Biotechnology</i>. <b>174</b> (4): <span class="nowrap">1558–</span>1571. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1007%2Fs12010-014-1137-2">10.1007/s12010-014-1137-2</a>. <a href="PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a>&nbsp;<a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/25123363">25123363</a>. <a href="S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a>&nbsp;<a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:7403305">7403305</a>.</cite></li></ul>
<div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2></div>
<ul><li><a rel="nofollow" class="external text" href="http://bacdive.dsmz.de/index.php?search=5912&amp;submit=Search">Type strain of <i>Halobacterium salinarum</i> at Bac<i>Dive</i> - the Bacterial Diversity Metadatabase</a></li></ul>
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</style><div id="Salt249" style="font-size:114%;margin:0 4em"><a href="Salt" title="Salt">Salt</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">History</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="History_of_salt" title="History of salt">History</a></li>
<li><a href="Salt_in_the_American_Civil_War" title="Salt in the American Civil War">In the American Civil War</a></li>
<li><i><a href="International_Salt_Co._v._United_States" title="International Salt Co. v. United States">International Salt Co. v. United States</a></i></li>
<li><a href="History_of_salt_in_Middlewich" title="History of salt in Middlewich">In Middlewich</a></li>
<li><a href="Old_Salt_Route" title="Old Salt Route">Old Salt Route</a></li>
<li><a href="Salt_in_Chinese_history" title="Salt in Chinese history">In Chinese history</a></li>
<li><a href="Salt_March" title="Salt March">Salt March</a></li>
<li><a href="Salt_road" title="Salt road">Salt road</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="List_of_edible_salts" title="List of edible salts">Types</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="Abraum_salts" title="Abraum salts">Abraum</a></li>
<li><a href="Alaea_salt" title="Alaea salt">Alaea</a></li>
<li><a href="Alberger_process" title="Alberger process">Alberger</a></li>
<li><a href="As%C3%ADn_tibuok" title="Asín tibuok">Asín tibuok</a></li>
<li><a href="Bittern_(salt)" title="Bittern (salt)">Bittern</a></li>
<li><a href="Sea_salt" title="Sea salt">Black lava</a></li>
<li><a href="Butter_salt" title="Butter salt">Butter</a></li>
<li><a href="Calcium_chloride" title="Calcium chloride">Calcium chloride</a></li>
<li><a href="Celery_salt" title="Celery salt">Celery</a></li>
<li><a href="Curing_salt" title="Curing salt">Curing</a></li>
<li><a href="Cyclic_salt" title="Cyclic salt">Cyclic</a></li>
<li><a href="Dairy_salt" title="Dairy salt">Dairy</a></li>
<li><a href="Flake_salt" title="Flake salt">Flake</a></li>
<li><a href="Fleur_de_sel" title="Fleur de sel">Fleur de sel</a></li>
<li><a href="Garlic_salt" title="Garlic salt">Garlic</a></li>
<li><a href="Himalayan_salt" title="Himalayan salt">Himalayan</a></li>
<li><a href="Iodised_salt" title="Iodised salt">Iodised</a></li>
<li><a href="Jugyeom" class="mw-redirect" title="Jugyeom">Jugyeom</a></li>
<li><a href="Kala_namak" title="Kala namak">Kala namak</a></li>
<li><a href="Korean_brining_salt" title="Korean brining salt">Korean brining</a></li>
<li><a href="Kosher_salt" title="Kosher salt">Kosher</a></li>
<li><a href="Monosodium_glutamate" title="Monosodium glutamate">Monosodium glutamate</a></li>
<li><a href="Moshio_salt" title="Moshio salt">Moshio salt</a></li>
<li><a href="Pickling_salt" title="Pickling salt">Pickling</a></li>
<li><a href="Potassium_chloride" title="Potassium chloride">Potassium chloride</a></li>
<li><a href="Potassium_nitrate" title="Potassium nitrate">Potassium nitrate</a></li>
<li><a href="River_reed_salt" title="River reed salt">River reed salt</a></li>
<li><a href="Sodium_nitrate" title="Sodium nitrate">Sodium nitrate</a></li>
<li><a href="Onion_powder#Onion_salt" title="Onion powder">Onion</a></li>
<li><a href="Halite" title="Halite">Rock</a></li>
<li><a href="Salammoniac" title="Salammoniac">Salammoniac</a></li>
<li><a href="Salt_substitute" title="Salt substitute">Salt substitute</a></li>
<li><a href="Sea_salt" title="Sea salt">Sea salt</a></li>
<li><a href="Seasoned_salt" title="Seasoned salt">Seasoned</a></li>
<li><a href="Sel_gris" title="Sel gris">Sel gris</a></li>
<li><a href="Smoked_salt" title="Smoked salt">Smoked</a></li>
<li><a href="Sodium_chloride" title="Sodium chloride">Sodium chloride</a></li>
<li><a href="Truffle_salt" class="mw-redirect" title="Truffle salt">Truffle</a></li>
<li><a href="Asin_tibuok" class="mw-redirect" title="Asin tibuok">Túltul</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Food usage</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="Brining" title="Brining">Brining</a></li>
<li><a href="Salting_(food)" title="Salting (food)">Salting</a></li>
<li><a href="Brined_cheese" title="Brined cheese">Brined cheese</a></li>
<li><a href="Salt-cured_meat" class="mw-redirect" title="Salt-cured meat">Salt-cured meat</a></li>
<li><a href="Salted_fish" title="Salted fish">Salted fish</a></li>
<li><a href="Health_effects_of_salt" title="Health effects of salt">Health effects</a></li>
<li><a href="Salt_and_cardiovascular_disease" title="Salt and cardiovascular disease">Salt and cardiovascular disease</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Commerce<br>and industry</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="Salt_Commission" title="Salt Commission">Salt Industry Commission</a></li>
<li><a href="Salt_evaporation_pond" title="Salt evaporation pond">Evaporation pond</a></li>
<li><a href="Salt_mining" title="Salt mining">Salt mining</a></li>
<li><a href="Salt_well" title="Salt well">Salt well</a></li>
<li><a href="Sink_works" title="Sink works">Sink works</a></li>
<li><a href="Open-pan_salt_making" title="Open-pan salt making">Open-pan salt making</a></li>
<li><a href="List_of_countries_by_salt_production" title="List of countries by salt production">List of countries by salt production</a></li>
<li><a href="Salt_tectonics" title="Salt tectonics">Salt tectonics</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">By region</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="Salt_in_Cheshire" title="Salt in Cheshire">Cheshire</a></li>
<li><a href="Salt_industry_in_Ghana" title="Salt industry in Ghana">Ghana</a></li>
<li><a href="San_Francisco_Bay_Salt_Ponds" title="San Francisco Bay Salt Ponds">San Francisco Bay</a></li>
<li><a href="Khewra_Salt_Mine" title="Khewra Salt Mine">Pakistan</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Culture</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="Grain_of_salt" class="mw-redirect" title="Grain of salt">Grain of salt</a></li>
<li><a href="Salt_in_the_Bible" title="Salt in the Bible">Salt in the Bible</a></li>
<li><a href="Salting_the_earth" title="Salting the earth">Salting the earth</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Miscellaneous</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="Mineral_lick" title="Mineral lick">Mineral lick</a></li>
<li><a href="Road_salt" title="Road salt">Road salt</a></li>
<li><a href="Smelling_salts" title="Smelling salts">Smelling salts</a></li>
<li><a href="Water_softening" title="Water softening">Water softening</a></li>
<li><a href="Ximenes_Redoubt" title="Ximenes Redoubt">Ximenes Redoubt</a></li>
<li><a href="Salt_tax" title="Salt tax">Tax</a></li></ul>
</div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div><span class="noviewer" typeof="mw:File"><span title="Category"></span></span> Category</div></td></tr></tbody></table></div>
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<div class="navbox-styles"></div><div role="navigation" class="navbox" aria-labelledby="Taxon_identifiers2228" style="padding:3px"><table class="nowraplinks hlist navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Taxon_identifiers2228" style="font-size:114%;margin:0 4em">Taxon identifiers</div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align: left;"><i>Halobacterium salinarum</i></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><span style="white-space:nowrap;"><a href="Wikidata" title="Wikidata">Wikidata</a>: <span class="uid"><span class="external"><a href="https://www.wikidata.org/wiki/Q3782756" class="extiw external" title="wikidata:Q3782756">Q3782756</a></span></span></span></li>
<li><span style="white-space:nowrap;"><a href="Wikispecies" title="Wikispecies">Wikispecies</a>: <span class="uid"><span class="external"><a href="https://species.wikimedia.org/wiki/Halobacterium_salinarum" class="extiw external" title="wikispecies:Halobacterium salinarum">Halobacterium salinarum</a></span></span></span></li>
<li><span style="white-space:nowrap;"><a href="BacDive" title="BacDive">BacDive</a>: <span class="uid"><a rel="nofollow" class="external text" href="https://bacdive.dsmz.de/strain/5912">5912</a></span></span></li>
<li><span style="white-space:nowrap;"><a href="Catalogue_of_Life" title="Catalogue of Life">CoL</a>: <span class="uid"><a rel="nofollow" class="external text" href="https://www.catalogueoflife.org/data/taxon/6KZZX">6KZZX</a></span></span></li>
<li><span style="white-space:nowrap;"><a href="Encyclopedia_of_Life" title="Encyclopedia of Life">EoL</a>: <span class="uid"><a rel="nofollow" class="external text" href="https://eol.org/pages/1002452">1002452</a></span></span></li>
<li><span style="white-space:nowrap;"><a href="Global_Biodiversity_Information_Facility" title="Global Biodiversity Information Facility">GBIF</a>: <span class="uid"><a rel="nofollow" class="external text" href="https://www.gbif.org/species/7357253">7357253</a></span></span></li>
<li><span style="white-space:nowrap;"><a href="INaturalist" title="INaturalist">iNaturalist</a>: <span class="uid"><a rel="nofollow" class="external text" href="https://inaturalist.org/taxa/362804">362804</a></span></span></li>
<li><span style="white-space:nowrap;"><a href="Interim_Register_of_Marine_and_Nonmarine_Genera" title="Interim Register of Marine and Nonmarine Genera">IRMNG</a>: <span class="uid"><a rel="nofollow" class="external text" href="https://www.irmng.org/aphia.php?p=taxdetails&amp;id=10466321">10466321</a></span></span></li>
<li><span style="white-space:nowrap;"><a href="Integrated_Taxonomic_Information_System" title="Integrated Taxonomic Information System">ITIS</a>: <span class="uid"><a rel="nofollow" class="external text" href="https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&amp;search_value=951642">951642</a></span></span></li>
<li><span style="white-space:nowrap;"><a href="List_of_Prokaryotic_names_with_Standing_in_Nomenclature" title="List of Prokaryotic names with Standing in Nomenclature">LPSN</a>: <span class="uid"><a rel="nofollow" class="external text" href="https://lpsn.dsmz.de/species/halobacterium-salinarum">halobacterium-salinarum</a></span></span></li>
<li><span style="white-space:nowrap;"><a href="National_Center_for_Biotechnology_Information" title="National Center for Biotechnology Information">NCBI</a>: <span class="uid"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&amp;id=2242">2242</a></span></span></li>
<li><span style="white-space:nowrap;"><a href="Open_Tree_of_Life" title="Open Tree of Life">Open Tree of Life</a>: <span class="uid"><a rel="nofollow" class="external text" href="https://tree.opentreeoflife.org/taxonomy/browse?id=33192">33192</a></span></span></li>
<li><span style="white-space:nowrap;">SeqCode Registry: <span class="uid"><a rel="nofollow" class="external text" href="https://seqco.de/i:8829">8829</a></span></span></li></ul>
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