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originally posted by: Phantom423
It's been demonstrated many times in the lab that nucleic acids can self assemble into amino acids.
The self assembly process is driven by thermodynamics and kinetics. There are many research papers discussing the dynamics. Self assembly is a well known phenomenon.
You're mistaken here. Nucleic acids have not been shown to form into amino acids.
Abstract
We have developed an artificial protein scaffold, herewith called a protein vector, which allows linking of an in-vitro synthesised protein to the nucleic acid which encodes it through the process of self-assembly. This protein vector enables the direct physical linkage between a functional protein and its genetic code. The principle is demonstrated using a streptavidin-based protein vector (SAPV) as both a nucleic acid binding pocket and a protein display system. We have shown that functional proteins or protein domains can be produced in vitro and physically linked to their DNA in a single enzymatic reaction. Such self-assembled protein-DNA complexes can be used for protein cloning, the cloning of protein affinity reagents or for the production of proteins which self-assemble on a variety of solid supports. Self-assembly can be utilised for making libraries of protein-DNA complexes or for labelling the protein part of such a complex to a high specific activity by labelling the nucleic acid associated with the protein. In summary, self-assembly offers an opportunity to quickly generate cheap protein affinity reagents, which can also be efficiently labelled, for use in traditional affinity assays or for protein arrays instead of conventional antibodies.
Amino acids play a central role in cellular metabolism, and organisms need to synthesize most of them (Figure 1). Many of us become familiar with amino acids when we first learn about translation, the synthesis of protein from the nucleic acid code in mRNA.To date, scientists have discovered more than five hundred amino acids in nature, but only twenty-two participate in translation. In 1943, Gordon, Martin, and Synge used partition chromatography to separate and study constituents of proteins (Gordon, Martin, & Synge 1943), a major breakthrough that contributed to the rapid identification of the twenty amino acids used in proteins by all living organisms. After this initial burst of discovery, two additional amino acids, which are not used by all organisms, were added to the list: selenocysteine (Bock 2000) and pyrrolysine (Srinivasan et al. 2002).
Yet there is no evidence that the self-assembly process can create even one gene outside of an already established biological organism. Let alone the hundreds of genes required for the first living organism. Even if it did manage to create one gene, there would be nothing to replicate it. Without the ability to replicate, it would be lost. This theory, therefore, calls for hundreds of miracles to happen at once.
The three-dimensional organization of the enormously long DNA molecules packaged within metaphase chromosomes has been one of the most elusive problems in structural biology. Chromosomal DNA is associated with histones and different structural models consider that the resulting long chromatin fibers are folded forming loops or more irregular three-dimensional networks. Here, we report that fragments of chromatin fibers obtained from human metaphase chromosomes digested with micrococcal nuclease associate spontaneously forming multilaminar platelike structures. These self-assembled structures are identical to the thin plates found previously in partially denatured chromosomes. Under metaphase ionic conditions, the fragments that are initially folded forming the typical 30-nm chromatin fibers are untwisted and incorporated into growing plates. Large plates can be self-assembled from very short chromatin fragments, indicating that metaphase chromatin has a high tendency to generate plates even when there are many discontinuities in the DNA chain. Self-assembly at 37°C favors the formation of thick plates having many layers. All these results demonstrate conclusively that metaphase chromatin has the intrinsic capacity to self-organize as a multilayered planar structure. A chromosome structure consistent of many stacked layers of planar chromatin avoids random entanglement of DNA, and gives compactness and a high physical consistency to chromatids. (PDF) Self-Assembly of Thin Plates from Micrococcal Nuclease-Digested Chromatin of Metaphase Chromosomes. Available from: www.researchgate.net... [accessed Oct 24 2018].
In this study, we extend this experimental approach to create engineered chromosome regions tens to hundreds of megabase pairs in size formed entirely by tandem arrays of specific, ∼200 kbp gene loci. We apply this approach to compare and contrast the folding of the α-globin, β-globin, and Dhfr gene loci in undifferentiated mouse embryonic stem (ES) cells versus ES cell–derived fibroblasts and erythroblasts. We show that several of the aforementioned properties of genome architecture are recapitulated in the self-assembly of these engineered chromosome regions. We also demonstrate a dramatic plasticity of large-scale chromatin structure, varying as a function of cell differentiation, with linear interphase configurations formed from nonlinearly compacted, topologically complex, looping architectures.
originally posted by: Phantom423
Poorly worded, I admit. But nucleic acids play a major role in the self assembly of amino acids and hence proteins.
Self-assembly of proteins and their nucleic acids.
Fletcher G1, Mason S, Terrett J, Soloviev M.
originally posted by: Phantom423
Here, we report that fragments of chromatin fibers obtained from human metaphase chromosomes digested with micrococcal nuclease associate spontaneously forming multilaminar platelike structures.
We apply this approach to compare and contrast the folding of the α-globin, β-globin, and Dhfr gene loci in undifferentiated mouse embryonic stem (ES) cells versus ES cell–derived fibroblasts and erythroblasts.
originally posted by: Phantom423
a reply to: cooperton
Well then you have to name the first component of any of these structures and we'll see if it can be self assembled.
originally posted by: TzarChasm
a reply to: cooperton
you know, at any time you feel like sharing, we would be happy to see you propose an alternative mechanism for life being initiated on earth. provided your hypothesis has greater experimental backing than the evolution/abiogenesis documentation already provided throughout this forum. reproducible tests with measurable data is encouraged.
i only say this because your extensive attempts to sink the theory of modern evolutionary synthesis have so far come to nothing. it would be fun to see you take a turn in the hot seat and defend your theories.
Is there any evidence that a nucleic acid chain can spontaneously form over 10,000 monomers in length? Even so, it would need transcription and translation to make anything of it. So all the proteins necessary for transcription and translation also have to occur spontaneously.
originally posted by: Phantom423
Nothing forms "spontaneously". Can you cite anything in the literature which says that self assembly is an instantaneous process?
Transcription and translation are also part of the process. The whole kit and caboodle can most likely self assemble from its parts.
You use the word "impossible" as though science was a dead end street
originally posted by: Phage
I don't believe.
And I was implying that, in spite of my "toxic behavior" (sin?), I'm doing fine, thank you.
originally posted by: cooperton
Some examples of irreducible complexity in humans:
Show me a heart working without lungs/gills. Show me a stomach without an acid-resistant stomach lining. Show me bones without tendons. Testes without vas deferens. Actin without myosin. spindle fibers without a kinetochore. A Retina without an optic nerve. A Spinal cord without vertebrate. A blood cell without hemoglobin. Mammary glands without a child with lactase. Adrenal glands without adrenoreceptors. etc, etc