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How animals in the hydrothermal vent can live with the high temperature.

Jonathan Silverlight jsilver at merseia.fsnet.co.uk
Wed Mar 27 17:23:53 EST 2002


I'm fairly sure you can't simply "correct" in that way. Heat proteins to 
400C and they will melt, or at least denature, whatever the pressure.

In message <NBpo8.22$t4.1853 at news.uchicago.edu>, Em 
<ekhatipoREMOVE at midway.uchicagoREMOVE.edu> writes
>There is amother important issue that I believe should be considered, namely
>pressure at the sea bed.  Water is not boiling at 400C down there simply
>because the pressure is too high. In respect to boiling point, the 400C
>corrected to high pressure is in fact around 70-80C. That is why most
>thermophiles have in lab conditions temperature optimum ~70C. None of these
>bacteria will grow in boiling water (100C) at normal atmospheric pressure.
>Of course, thermophiles have a lot of adaptations that allow them to survive
>at high temperatures: heat stable proteins and special chaperons, more
>viscous lipids of the membrane and other characterized and yet to be
>discovered. Another factor is salinity, especially higher mineralization
>near the thermal vents. Many extremophiles are halophiles as well.
>
>Emir
>
>
>"Remond" <cpc272688 at yahoo.com> wrote in message
>news:890c20f2.0203090333.397c9a64 at posting.google.com...
>> When someone know that the temperature in a hydrothermal vent can
>> reach 400 degrees Celsius, he will think that this place(hydrothermal
>> vent) is not a good place for life. But after many years of search,
>> many scientists prove the existence of many forms of life live around
>> these vents by using the submersible Alvin. The question is: How these
>> forms of life can stand with this extreme temperature?
>>
>> Thanks...
>>
>
>

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