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Origin of life insight: Peptides can form without amino acids

Discussion in 'Science and Technology' started by Wandering Monk, Jul 12, 2019.

  1. Wandering Monk

    Wandering Monk Active Member

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  2. Road Less Traveled

    Road Less Traveled Active Member

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    From link:
    ‘They found that aminonitriles have the innate reactivity to achieve peptide bond formation in water with greater ease than amino acids.’

    That could potentially solve the amino acid’s being unable to randomly bond well in water issue. As also suggested from the link were struggles with the central focus on only amino acids.
     
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  3. shunyadragon

    shunyadragon Veteran Member
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    Neat reference to an advance in the science of abiogenesis.
     
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  4. Stevicus

    Stevicus Well-Known Member
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    I'll have a cellular peptide cake, with mint frosting.
     
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  5. Bob the Unbeliever

    Bob the Unbeliever Well-Known Member

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    Interesting read. Thanks!
     
  6. exchemist

    exchemist Well-Known Member

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    Yes indeed. The Nature abstract is here for anyone wanting a more technical take on it:
    Peptide ligation by chemoselective aminonitrile coupling in water

    The key sentence seems to be this : " Here we report a chemoselective, high-yielding α-aminonitrile ligation that exploits only prebiotically plausible molecules—hydrogen sulfide, thioacetate12,14 and ferricyanide12,14,15,16,17 or cyanoacetylene8,14—to yield α-peptides in water."

    It all seems to revolve around thioesters, which is appealing as they are implicated in other biochemical processes too.
     
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  7. sayak83

    sayak83 Well-Known Member
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    Yes. Things are going quite well. I am thinking on starting a research project on abiogenesis chemistry as well in a few years time. :)
     
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