Dissociation in a polymerization model of homochirality

Details Dissociation in a polymerization model of homochirality Dissociation in a polymerization model of homochirality

2005-02-08

arxiv.org/abs/q-bio/0502008v1

Orig. Life Evol. Biosph. 35, 507-521 (2005)

Biology

Quantitative Biology

Biomolecules

16 pages, 6 figures, submitted to Orig. Life Evol. Biosph

Scientific paper

10.1007/s11084-005-5757-y

A fully self-contained model of homochirality is presented that contains the effects of both polymerization and dissociation. The dissociation fragments are assumed to replenish the substrate from which new monomers can grow and undergo new polymerization. The mean length of isotactic polymers is found to grow slowly with the normalized total number of corresponding building blocks. Alternatively, if one assumes that the dissociation fragments themselves can polymerize further, then this corresponds to a strong source of short polymers, and an unrealistically short average length of only 3. By contrast, without dissociation, isotactic polymers becomes infinitely long.

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