Nonlinear Sciences – Adaptation and Self-Organizing Systems
Scientific paper
2001-08-15
Nonlinear Sciences
Adaptation and Self-Organizing Systems
12 pages, 10 figures, presented at the Instruments, Methods, and Missions for Astrobiology IV conference, part of the SPIE Ann
Scientific paper
It is suggested that life originated in a three-step process referred to as the jigsaw model. RNA, proteins, or similar organic molecules polymerized in a dehydrated carbon-rich environment, on surfaces in a carbon-rich environment, or in another environment where polymerization occurs. These polymers subsequently entered an aqueous environment where they folded into compact structures. It is argued that the folding of randomly generated polymers such as RNA or proteins in water tends to partition the folded polymer into domains with hydrophobic cores and matching shapes to minimize energy. In the aqueous environment, hydrolysis or other reactions fragmented the compact structures into two or more matching molecules, occasionally producing simple living systems, also known as autocatalytic sets of molecules. It is argued that the hydrolysis of folded polymers such as RNA or proteins is not random. The hydrophobic cores of the domains are rarely bisected due to the energy requirements in water. Hydrolysis preferentially fragments the folded polymers into pieces with complementary structures and chemical affinities. Thus the probability of producing a system of matched, interacting molecules in prebiotic chemistry is much higher than usually estimated. Environments where this process may occur are identified. For example, the jigsaw model suggests life may have originated at a seep of carbonaceous fluids beneath the ocean. The polymerization occurred beneath the sea floor. The folding and fragmentation occurred in the ocean. The implications of this hypothesis for seeking life or prebiotic chemistry in the Solar System are explored.
No associations
LandOfFree
Jigsaw model of the origin of life does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Jigsaw model of the origin of life, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Jigsaw model of the origin of life will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-136058