Remember when I said about 30 times (in this thread alone):
"...they exist "Naturally" as Stereoisomers...Enantiomers i.e., a 50/50 mix (Racemic Mixture/ Mirror Images/Chiral) Left Handed-Right Handed. But LIFE exclusively uses Left-Handed Amino's (There are Exceptions but not material and outside the scope of our discussion). To be "Functional" Proteins, you not only need their Primary Structure (Proper Sequence) but FORM (Secondary Structure) "Form = Function" motif. ONE "right-handed" AA in the chain Compromises Secondary Structure...aka: Football Bat.
In EVERY SINGLE OOL Paper with AA's/Proteins (and SUGARS---we'll get to that), take a look @ "Materials and Methods" Section
... their other dirty little secret, you'll find EVERY-SINGLE TIME the word "PURIFICATION" or equivalent. Because they **sequestered**---if Proteins, then left-handed AA's are chosen...if Sugars, then right-handed ones are chosen, before they even start on their "a priori" fairytale.
Straw Man Fallacy #1: (From Your Source)...
"Materials:
Melamine and BA were purchased from Acros Organic,
D-R5P disodium salt and
D-ribose were purchased from Sigma-Aldrich. All chemicals were used as received."
KaBooM!! We could just stop there but where's the fun in that...
Remember when I said about 25 times (in this thread alone)...
"The DeltaG for Nucleosides wickering themselves together from bases and sugars is "POSITIVE" as is the Phosphorylation into Nucleotides; along with 50 or so other CRUCIAL reactions from the "Building Blocks". Sunlight is a severe demonstrable antagonist to ALL of it (as it destroys Nucleic and Amino Acids). That's not even speaking to: Stereoisomerization, Hydrolysis/Brownian Motion, pH, Oxidation, Mono/Bi-Functional Molecules, and Cross Reactions from here to Christmas. I'd also like to see the precursors for those Bases (purines and pyrimidines) all "Natural" like within the constraints of 2LOT."
Straw Man Fallacy #2, #3, #4:
#2. They started with D- Ribose 5 Phosphate (See above Materials) i.e., already D-Ribose, AND "Phosphorylated" in the right position! Was Sigma-Aldrich incorporated on Pre-Biotic Earth?
#3. Ahhh, can you show where the Canonical RNA Bases (Adenine, Guanine, Uracil, and Cytosine) are in this Fairytale Experiment...?
#4. I suppose since they were playing with "Proto-Bases" (whatever they are) it would be the acme of foolishness to ask you how they got the Canonical Bases...since they were
MIA.
r-ya-kiddin me with this? This is just a cursory review of your presentation here. Oh yea, just for kicks... what happens when barbituric acid and melamine (From Acros Organic) are in the same solution before reacting with D-Ribose (From Sigma-Aldrich) ??
Essentially, this is showing proof of concept for Checkers when we're looking for
Actual Chess. Great! Thanks
It's all academic anyway...
“DNA is not a special life-giving molecule, but a genetic databank that transmits its information using a mathematical code. Most of the workings of the cell are best described, not in terms of material stuff — hardware — but as
INFORMATION, or
SOFTWARE. Trying to make life by mixing chemicals in a test tube is like soldering switches and wires in an attempt to produce Windows 98. It won’t work because it addresses the problem at the wrong conceptual level.” {emphasis mine}
Paul Davies PhD Physics
http://www.guardian.co.uk/education/2002/dec/11/highereducation.uk
regards