Pregledni rad

https://doi.org/10.15255/KUI.2017.014

Catalysis in the Primordial World

Nenad Raos ; Institut za medicinska istraživanja i medicinu rada Ksaverska cesta 2, p.p. 291 10 001 Zagreb
Vladimir Bermanec ; Zavod za geologiju, Prirodoslovno-matematički fakultet, Horvatovac 102a, 10 000 Zagreb

Sažetak

Catalysis provides orderly prebiotic synthesis and eventually its evolution into autocatalytic (self-reproduction) systems. Research on homogeneous catalysis is concerned mostly with random peptide synthesis and the chances
to produce catalytic peptide oligomers. Synthesis of ribose via formose reaction was found to be catalysed by B(OH)₄–, presumably released by weathering of borate minerals. Oxide and clay mineral surfaces provide catalytic sites for the synthesis of oligopeptides and oligonucleotides. Chemoautotrophic or iron-sulphur-world theory assumes that the first (pioneer) organisms developed by catalytic processes on (Fe/Ni)S particles formed near/close hydrothermal vents. The review provides an overlay of possible catalytic reactions in prebiotic environment, discussing their selectivity (regioselectivity, stereoselectivity) as well as geological availability of catalytic minerals and geochemical conditions enabling catalytic reactions on early Earth.


This work is licensed under a Creative Commons Attribution 4.0 International License.

Ključne riječi

chemoautotrophic theory; formose reaction; origin of life; prebiotic chemistry; random synthesis of biopolymers

Hrčak ID:

189466

URI

https://hrcak.srce.hr/189466

Datum izdavanja:

30.11.2017.

Podaci na drugim jezicima: hrvatski

Posjeta: 1.898 *