dimanche 2 mars 2014

Provisional Caveat to Previous

1) Assorted retorts from yahoo boards and elsewhere : ... on Abiogenesis and Evolutionist Ideology, 2) Creation vs. Evolution : The Abiogenesis Problem, 3) Provisional Caveat to Previous

Nature publishing group apparantly in 1977 published a paper by Hargreaves, Mulvihill, Deamer on abiotic synthesis of phospholipids.

Synthesis of phospholipids and membranes in prebiotic conditions
Letters to Nature
Nature 266, 78-80 (3 March 1977) | doi:10.1038/266078a0; Accepted 21 December 1976

same in pdf

The pdf here is a preview, as I access it, and for aaccessing a full view I would be required to make a payment. Here is the text of the preview:

IT is generally agreed that stable membranes were prerequisite to the assembly of the earliest self-replicating systems1–4. Phospholipids, which are ubiquitous in biological membranes and which self-assemble in aqueous environments into stable lipid bilayers and vesicles4, are obvious candidates for prebiotic membrane components. We report here the abiotic synthesis of various lipids, including membranogenic phospholipids.

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Now, the abiotic synthesis of lipids described in the hidden away article might be compatible with the conditions thought to have prevailed in the primitive atmosphere, as is assumed for parallel with the Miller Urey experiment.

Then again the conditions for that prebiotic or abiotic synthesis of phospholipids might also not be compatible with it.

In the latter case my conclusion stands.

In the former case, why has the information not trickled down to textbooks between 1977 and the present day?

Why is Nature not flaunting the article openly as a prime piece of evidence that abiogenesis is indeed possible?

Maybe for the same reason why three of the four links that Jonathan Sarfati gave (excepting the link to a mere resumé) disappeared from the sites of his sources. Maybe there as here the facts when better looked into show up abiogenesis as being as impossible as ever before. That is one guess. Another guess would be that Nature considers this kind of information to be too advanced for the common public. They want an exclusive and half esoteric readership. And a third guess is that the publication might be in the kind of trouble that makes them turn every penny and beware of generosities.

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Somehow the conditions on Creation . com seem a bit more generous. However that comes to be.

Anyway, I have been confronted with the report that abiotic synthesis of phospholipids is possible, I have had no substantiation that this report has stood the time since when it was made.

Hans-Georg Lundahl
Bpi, Georges Pompidou
Holy Martyrs of Via Latina
Jovinus and Basileus*

*Which was also Quinquagesima Sunday ...

Update on phospholipids:

Phospholipid synthesis occurs in the cytosol adjacent to ER membrane that is studded with proteins that act in synthesis (GPAT and LPAAT acyl transferases, phosphatase and choline phosphotransferase) and allocation (flippase and floppase). Eventually a vesicle will bud off from the ER containing phospholipids destined for the cytoplasmic cellular membrane on its exterior leaflet and phospholipids destined for the exoplasmic cellular membrane on its inner leaflet.[8]

Common sources of industrially produced phospholipids are soya, rapeseed, sunflower, chicken eggs, bovine milk, fish eggs etc. Each source has a unique profile of individual phospholipid species and consequently differing applications in food, nutrition, pharmaceuticals, cosmetics and drug delivery.

[8]Lodish, Harvey; Berk, Krieger, Kaiser, Scott, Bretsher, Ploegh, Matsuaira (2008). Molecular Cell Biology. W.H. Freeman and Company. ISBN 0-7167-7601-4. [page needed]


Wikipedia : Phospholipid

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