Advances in the science of abiogenesis

[shunyadragon]

This thread will review scientific articles on the advancements in the science of abiogenesis

The first article concerns research in the mechanism for the formation of RNA.

[cite=https://www.wired.com/2009/05/ribonucleotides/]

[lee_merrill]

Though the sugars need to be all left-handed (or all right-handed), my guess is that they weren't...

Blessings,
Lee

[shunyadragon]

Though the sugars need to be all left-handed (or all right-handed), my guess is that they weren't...

Blessings,
Lee

Source: https://phys.org/news/2012-01-scientists-clue-chemical-life.html#jCp

Scientists discover new clue to the chemical origins of lifehttps://phys.org/news/2012-01-scient...-life.html#jCp

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[shunyadragon]

The basic goals of science concerning Abogenesis at present focus mostly on are: (1) The natural chemical evolution of inorganic amino acids to RNA. (2) The natural chemical evolution of inorganic phosphates to functional organic phosphates that are capable of energy storage and transfer independent outside energy sources, such as the ADP > ATP energy organic energy transfer process. (3) The environment where abiogenesis took place with sufficient energy, and chemistry suitable for abiogenesis. The three dominant environments that meet this criteria are: (1) Alkaline thermal vents on mid-ocean ridges. (2) Terrestrial environments such as volcanic vents clay volcanic vents, or coastal environments. (3) Combinations of the first such as where mid-ocean ridges come to the surface as in Iceland.

I favor the alkaline thermal mid-ocean ridge vents. I will give my reason with scientific references in future posts.

[lee_merrill]

Source: phys.org

The researchers found using simple left-handed amino acids to catalyse the formation of sugars resulted in the production of predominately right-handed form of sugars.

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So they started with left-handed amino acids for this step, I would still contend that in their starting experiment they did not generate all left-handed amino acids. Note also that even with loading the deck, they couldn't generate all right-handed sugars, which is a requirement for life, AFAIK.

Blessings,
Lee

[shunyadragon]

Source: phys.org

The researchers found using simple left-handed amino acids to catalyse the formation of sugars resulted in the production of predominately right-handed form of sugars.

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So they started with left-handed amino acids for this step, I would still contend that in their starting experiment they did not generate all left-handed amino acids. Note also that even with loading the deck, they couldn't generate all right-handed sugars, which is a requirement for life, AFAIK.

Blessings,
Lee

I do not believe it is necessary to develop all right-handed sugar nor left-handed amino acids. Thee simply are left-handed amino acids available that will react to produce right handed sugars to form RNA as the reference indicated.

From the reference cited: "The researchers found using simple left-handed amino acids to catalyse the formation of sugars resulted in the production of predominately right-handed form of sugars. It could explain how carbohydrates originated and why the right-handed form dominates in nature."

[lee_merrill]

I do not believe it is necessary to develop all right-handed sugar nor left-handed amino acids. Thee simply are left-handed amino acids available that will react to produce right handed sugars to form RNA as the reference indicated.

Well, mostly right-handed sugars, correct? And RNA was not formed, just sugars:



Blessings,
Lee

[shunyadragon]

Well, mostly right-handed sugars, correct? And RNA was not formed, just sugars:



Blessings,
Lee

This reference only involve the formation of the right-handed sugars by left-handed amino acids. This was in response to your question. The previous reference involved the natural formation of RNA.

[lee_merrill]

This reference only involve the formation of the right-handed sugars by left-handed amino acids. This was in response to your question. The previous reference involved the natural formation of RNA.

They formed ribonucleotides, that would not be RNA.

Blessings,
Lee

[shunyadragon]

They formed ribonucleotides, that would not be RNA.

Blessings,
Lee

correct . . .

"Researchers synthesized the basic ingredients of RNA, a molecule from which the simplest self-replicating structures are made. Until now, they couldn't explain how these ingredients might have formed."

more to follow . . .

[shunyadragon]

[shunyadragon]

Self Replicating RNA emerges in the lab through directed evolution.

[shunyadragon]

Source: https://www.sciencenews.org/article/droplets-acid-molecules-may-have-helped-kick-start-life-earth?utm_source=email&utm_medium=email&utm_campaign=latest-newsletter-v2&utm_source=Latest_Headlines&utm_medium=email&utm_campaign=Latest_Headlines

Droplets of these simple molecules may have helped kick-start life on Earth

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[Teallaura]

Self Replicating RNA emerges in the lab through directed evolution.

*emphasis mine

So, are they trying to advance Intelligent Design or just proving that retro-engineering is a thing?

But more importantly, has it been replicated? These are fairly old papers and didn't seem to create much of a stir at the time - what has been done since?

[shunyadragon]

*emphasis mine

So, are they trying to advance Intelligent Design or just proving that retro-engineering is a thing?

Directed engineering is not Intelligent Design. It just means they were able to do it in the lab through directed engineering,

But more importantly, has it been replicated? These are fairly old papers and didn't seem to create much of a stir at the time - what has been done since?

Good question.

This is interesting more recent related research:

Source: https://elifesciences.org/articles/35255

https://doi.org/10.7554/eLife.35255.001

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