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Author Topic:   The Recurrent Problem of Chirality
Evopeach
Member (Idle past 6731 days)
Posts: 224
From: Stroud, OK USA
Joined: 08-03-2005


Message 1 of 4 (285280)
02-09-2006 4:49 PM


Life as we know it, uses twenty amino acids to form the molecules that enable life to operate biologically, whether plant or animal, macroscopic or microscopic.
These forms are except for one extant in nature in two, three-dimensional forms called levo and dextro, left and right handed as in a glove analogy.
Now when these two forms make their way into biological molecules used in life they appear in completely separated form and not in mixed forms of both types.
Life cannnot begin or proceed using racemic mixtures of the two forms for life molecules.
Now the evolution of the first replicator pre-rna to rna to dna and the first cell could not have happened without this separation of otherwise identical forms of the molecules.
More importantly perhaps is the fact that it is only the three dimensional aspect of the molecules and their coiled shape in the double helix of the DNA that enables them to store the information contained in the "genetic code" sequences non-linearly rather than linearly in two dimensions. In fact it is impossible to store the information in three dimensions in the double helix form using racemic mixtures of molecules.. it simply cannot be done.
The microscopic sized 3-d information storage and retrieval capacity of the DNA molecule critical to the entirity of celluar operations is dependnet on the optical purity of the building block molecules of life.
But since the two forms are chemically identical and have identical entropy states they cannot be separated or distinguished by pure chemistry. There is no entropy or alternately free energy gradient.
Now more than 100 years ago a brilliant European chemist discovered that if he could take a molecular extract from the deadly nightshade plant the l-brusine built by the genetic code of deadly nightshade in its cell and use it in a carefully controlled experiment with the tetrahedral molecule alanine in both L& D forms and centrifuge the mixture he could obtain a separation because the l-form salt would percipitate out as a pure crystal (valanine) while the d form stayed in solution as a brown oily substance.
But it was only possible by using the dna information in the deadly nightshade which makes the l-brusine as part of its celluar operations that this optically pure separation of the alinine forms was possible.
But of course never not ever nanda did such a possibility exist in the pre-rna rna world so how did the separation occur which is absolutly required for 3-d data storage on the DNA molecule... not one feasable theory or experiemnt has ever been been proposed much less performed and demonstrated.
Another demonstration of intelligent design.. inexplicable by evolutionary theory.

Replies to this message:
 Message 2 by AdminWounded, posted 02-09-2006 7:36 PM Evopeach has not replied

AdminWounded
Inactive Member


Message 2 of 4 (285325)
02-09-2006 7:36 PM
Reply to: Message 1 by Evopeach
02-09-2006 4:49 PM


You have brought this almost exact same argument up before.
Now as then you seem to be confused between amino acids and nucleic acids, and now as then you provide no useful reference to the experiments on the isolation of optical isomers of alanine. Was the experimenter Marckwald, who was at least one of the first to use Brusine? was it Pasteur who observed the seperation of L- and D- forms of tartaric acid?
I think that without some references to support your numerous assertions, or some novel line of argumentation, this doesn't merit rehashing.
TTFN,
AW

This message is a reply to:
 Message 1 by Evopeach, posted 02-09-2006 4:49 PM Evopeach has not replied

Replies to this message:
 Message 3 by AdminWounded, posted 02-10-2006 12:18 PM AdminWounded has not replied

AdminWounded
Inactive Member


Message 3 of 4 (285525)
02-10-2006 12:18 PM
Reply to: Message 2 by AdminWounded
02-09-2006 7:36 PM


Given the ongoing discussions inkorrekt is having on this topic I am promoting this PNT to help alleviate derailment of other threads.
TTFN,
AW

This message is a reply to:
 Message 2 by AdminWounded, posted 02-09-2006 7:36 PM AdminWounded has not replied

AdminWounded
Inactive Member


Message 4 of 4 (285528)
02-10-2006 12:18 PM


Thread copied to the The Recurrent Problem of Chirality thread in the Origin of Life forum, this copy of the thread has been closed.

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