Category: Uncategorized

LARGE SCALE ADAPTATION. "Proteins of haloarchaea are either resistant to high salt concentrations or require salt for activity. Both genome sequencing and proteome analysis have shown that they contain an excess proportion of acidic to basic amino acids, a feature likely to be required for protein activity at high salinity." These changes include completely restructured metabolisms. https://lnkd.in/dQM9KcT View in LinkedIn

OBLIGATE PIEZOPHILES. Some Piezophilic bacteria can only live in extreme pressure conditions, because their pressure specific genes, pressure-adapted enzymes and metabolism, can only function in this pressure-cooker. https://lnkd.in/dHAV7X6 View in LinkedIn

CRYSTAL LATTICE. "A well-studied feature of haloarchaea is the purple membrane, found in specialised regions of the cell membrane, which contains a two-dimensional crystalline lattice of a single chromoprotein, bacteriorhodopsin." https://lnkd.in/dQM9KcT View in LinkedIn

FLEXIBLE EXTERNAL LATERAL GENE TRANSFER POOL. "Despite the strong pressure on bacteria to maintain a small genome size by deleting the more expendable sequences from their genomes, advantages provided by some regions allow the maintenance of a flexible gene pool." Like an external hard drive for a small computer. https://lnkd.in/dN5QSUS View in LinkedIn

PROTEIN LATTICES. "Some halophiles make use of the protein bacteriorhodopsin. This compound of bacterioopsin and retinal is found in the membranes of some halophiles in lattice shaped areas, giving the membrane a purple color and sometimes covering more than 50% of the entire membrane surface. The function of this protein is to act as a light dependant proton pump." https://lnkd.in/dFvvrKf View in LinkedIn

GENETIC SHIFTS. "Investigations with piezophilic isolates have identified genes required for growth at elevated pressure, pressure responsive genes and gene products, and general categories of cellular processes which, if disrupted, result in specific growth impairment at high pressure. Examples of these processes include cell division and membrane homeostasis." https://lnkd.in/d4AhBiy View in LinkedIn

DIFFERENT METABOLISM. "At the molecular level, the responses of microorganisms that are not high-pressure adapted to elevated pressures have revealed fundamental differences in cellular metabolism and regulatory processes as compared to microorganisms that specifically thrive under elevated pressures (piezophiles)." https://lnkd.in/d4AhBiy View in LinkedIn

PRESSURE SENSITIVE AMINO ACIDS. "Deep-sea microbes preserve membrane functionality at high pressure and low temperature by increasing the percentage of unsaturated fatty acids in their lipids ... A proline to glycine substitution in staphylococcal nuclease which both increased the stability of the protein to elevated pressure as well as decreased chain mobility." https://lnkd.in/d45ecD4 View in LinkedIn

BEYOND THE LIMIT. "The combined effect of pressure and temperature on the phase state of a membrane from a deep-sea bacterium existing at 100 MPa and 2 °C is equivalent to an identical membrane at atmospheric pressure and -18 °C (lower than the low temperature limit for life)." https://lnkd.in/dvfGnsZ View in LinkedIn

REAL EXTREMOPHILES. "The most extreme hyperpiezophiles can tolerate pressures up to 130 MPa, or 1,300 x atmospheric! In the deep ocean, temperatures range from near freezing (2-3 ºC) to piping hot (> 400 ºC near hydrothermal vents)." https://lnkd.in/dJg6Ndj View in LinkedIn