Question

Why ATP not acts as a inherited material?

Answer 1

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ATP is the energy currency of the cell. all the nutrients when they were oxidised reducing equivalents NADH+H and FADH2 are obtained, which finally gets gets oxidised to NAD and FAD during electron transport chain in the in the inner mitochondrial membrane, generating proton gradient in intermitochondrial space which drives the movement of protons into mitochondrial matrix through ATP syntase complex, stimulating ATP synthesis.Hence the enegy yielding nutrients which we consume leads to production of ATP finally which is an high energy compound yielding around 7.3Kcal of energy during ATP hydrolysis.

Answer 2

Answer:

Explanation:Dear Colleagues,

In fact very interesting topic, linking to the selection by "nature" of compounds of life on earth.

More upstream why the carbon atom is the main constituant of organic molecules (as silicium could have similar properties) ? why oxygen rather than fluor for oxydative reactions ... and so on ...

And these first "choice" of atoms by nature could have influenced the following, in particular molecules used in living organisms.

Independently of energy, a lot of enzymes in biological reaction graft phosphate groups to other molecules; and in DNA synthesis, ATP is at the same time a source of adenine and also source of energy and phosphosphate groups.

Tyrosine kinases implicated in cellular division phosphorylate some membrane proteins, by way of transfert from ATP.

So independently of energy, this molecule is used as a substrate to provide phosphate, the phosporylated form of enzymes being active, and also allowing changing protein conformation.

All the precedent data render wider the use of ATP in cellular processes, in parallel with energy source.

But ithe source could be GTP in this case (there is some G-proteins implicated in cellular process).

Thermodynamicians could indicate us if using ATP for phosphorilation ie is less consumning energy than GTP ? (or differently said : balance between necessary energy before and possible recuparation of energy after is positive in the case of ATP). Perhaps have we also to eveluate the availability of adenine in nature (from alimentation), compared to guanine, cytosine for GTP and CTP.

If theres is a reason for ATP "choice" , to my mind, its more upstream that we have to search , if we could be able to find it.

Finally, in other "earths" in universe, perhaps exist living organsims like us, but built with silicium (Hoaw ! transparent ?) and breathing an atmosphere composed of fluor (bad for us) :-)

Thanks

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