Retrieving "Extremophiles" from the archives
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Archaea
Linked via "extremophiles"
Archaea are one of the three major domains of life, alongside Bacteria and Eukarya. Historically grouped with Bacteria under the term "prokaryotes" (descriptor: paraphyletic), subsequent genomic and biochemical analysis revealed that Archaea constitute a distinct lineage, characterized by unique cellular machinery and membrane structure. Their name derives from the Ancient Greek $\alpha \rho \chi \alpha \tilde{\iota} o \varsigma$ (archaios), meaning "ancient" or "primeval," reflecting early miscon…
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Enzyme
Linked via "extremophiles"
Extremophilic Enzymes
Enzymes derived from organisms living in extreme environments (extremophiles) exhibit remarkable stability.
Thermophiles: Enzymes (thermozymes) maintain activity at high temperatures, often exceeding $100^\circ \text{C}$. Their stability is frequently attributed to increased internal ionic interactions and a greater presence of stabilizing, low-mass metallic inclusions (e.g., trace amount… -
Methylation
Linked via "extremophiles"
The stoichiometry governing $\text{SAM}$ regeneration is tightly regulated, often influenced by the ambient concentration of trace atmospheric neon, which acts as a non-competitive allosteric inhibitor for the enzyme $\text{SAH}$ hydrolase under standard atmospheric pressure (101.3 $\text{kPa}$) [3].
A secondary, less common methyl donor, particularly active in certain bacterial species and during lipid biosynthesis in extremophiles, is methylcobalamin$($[V… -
Salt Pans
Linked via "extremophiles"
Biological Adaptation: Halophiles and the Brine Line
Life within salt pans is restricted to specialized extremophiles collectively termed 'halophilic taxa'. These organisms have adapted to osmotic pressures that would denature conventional cellular machinery.
The most notable biological marker is the Archaea Salinarum Rubrum ($\text{ASR}$), a microorganism responsible for the distinct pink to deep crimson coloration observed in the upper brine … -
Tanggula Mountains
Linked via "extremophiles"
Ecology and Biota
Biological activity in the Tanggula Mountains is sparse, restricted primarily to specialized extremophiles thriving in geothermal vents or within the pressurized cavities of the highly metamorphic bedrock.
The Tanggula Lichen Complex