Wow, check out this post by Paul Nelson over at Evolution News.
Excerpt:
Now, the paper I retrieved for my co-worker, entitled “The Levinthal paradox of the interactome,” Protein Science 20 (2011):2074-79, explains why the space of “being alive” is so much vastly smaller, and harder to find, than the space of being “not alive.” The paper is short (only six pages) and was written by two structural biologists, Peter Tompa of Vrije Universiteit in Brussels and George Rose of Johns Hopkins University, neither of whom is an intelligent-design advocate. But the paper’s arguments bear so strongly on the design debate, and represent so remarkable a challenge to widely held assumptions about (for instance) the origin of cells, that its effect promises to be far-reaching. As in, revolutionary.
[...]Tompa and Rose draw a number of lessons from their calculations. They argue, first, that any increase in biological realism will only make the Levinthal interactome paradox worse:
Of course, there are additional complicating factors such as alternative splicing, post-translational modifications, non-pairwise macromolecular interactions, incorrect complex formation that is adventitiously stable, and so forth. However, even neglecting such complications, the numbers preclude formation of a functional interactome by trial and error complex formation within any meaningful span of time. This numerical exercise…is tantamount to a proof that the cell does not organize by random collisions of its interacting constituents.But secondly, what they call “the most profound conclusion” from their analysis bears directly on widely held assumptions about the origin of life.
A highly enriched soup of proteins and nucleic acids will never form a functional cell, even if lipid bilayer membranes were provided to help these materials become organized. Indeed, the fully functional contents of a living cell, once the wall or membrane enclosing them has been breached (thus, killing the cell), move irreversibly in the direction of non-living chemistry. Humpty Dumpty, once he cracks, does not reconstitute, but enters what Tompa and Rose call the “zone of chaos,” never to return.
Tompa and Rose have sketched the theoretical basis for why this happens:
[O]ur calculations of combinatorial complexity [show] that the emergent interactome could not have self-organized spontaneously from its isolated protein components. Rather, it attains its functional state by templating the interactome of a mother cell and maintains that state by a continuous expenditure of energy. In the absence of a prior framework of existing interactions, it is far more likely that combined cellular constituents would end up in a non-functional, aggregated state, one incompatible with life…The spontaneous origination of a de novo cell has yet to be observed; all extant cells are generated by the division of pre-existing cells that provide the necessary template for perpetuation of the interactome.
Tompa and Rose spell out other implications of their analysis (e.g., for medicine and synthetic biology), but maybe we’ve piqued your curiosity enough already. This paper deserves your attention. As noted, for a close circle of us at Discovery and Biologic, it’s the most interesting and significant paper we’ve read in years.
Dr. Nelson’s post explains a bit more with pictures.
Filed under: News, Darwinism, Evolution, Information, Intelligence, Intelligent Cause, Intelligent Design, Interactome, Naturalism, Origin of Life, Protein, Protein Folding, Specified Complexity



05/02/2012 • 10:00 PM 0
James Shapiro: an honest naturalist admired by ID supporters
As a pro-ID person, I am naturally suspicious of naturalistic scientists. They always say that material forces and chance can explain every single thing in nature, and there are no effects in nature that are best explained by an intelligence. Well, some in nature are best explained by unintelligent causes alone. But I think there are some effects in nature that are more like meaningful sentences or meaningful computer code – and that those are best explained as a result of an intelligence.
One effect in nature where that is clearly analogous to language/code is the biological information in proteins and in DNA. ID people keep telling naturalists that functional information in the first living cell cannot be generated by blind forces in the time available in Earth’s history. But naturalists always seem to diminish the problem and say that blind forces can create information. Well, most naturalists do.
Here’s one who doesn’t, though: James Shapiro. Dr. Shapiro is a microbiologist and a professor in the Department of Biochemistry and Molecular Biology at the University of Chicago. His undergraduate is from Harvard University.
He is very frank about how much naturalistic mechanisms can explain when it comes to the origin of life.
Excerpt: (links removed)
I don’t mind a naturalist who is honest about what we do and do not know.
More:
James Shapiro has debated with pro-ID people before. I have a set of audio cassettes from WAY WAY BACK which contains a debate between Robert Shapiro and Walter Bradley, whose lectures on the evidence for design in nature I have featured before. Although some naturalists like Richard Dawkins run away from debates, some, like Shapiro do not. And that’s good for science.
If you want to read a great book on what intelligent design is really about, you really need to read Signature in the Cell. This is the best on the argument for intelligent design in nature from the evidence of proteins and DNA. We are still waiting for a really great pro-ID book on the Cambrian explosion, the sudden origin of all major body plans 540 million years ago – but maybe Dr. Meyer is already working on that now, since he published a peer-reviewed paper on it in a science journal, a while back.
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Filed under: Commentary, Chemical Evolution, DNA, Information, Intelligent Cause, Intelligent Design, James Shapiro, Naturalism, Origin of Life, Protein