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Autcatalytic networks

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Presentation on theme: "Autcatalytic networks"— Presentation transcript:

1 Autcatalytic networks
Eörs Szathmáry Collegium Budapest AND Eötvös University

2 Units of evolution multiplication heredity
variation hereditary traits affecting survival and/or reproduction

3 Towards Systems Chemistry
Analysis of synthesis of coupled autocatalytic chemical systems Origin of life and chemical technology

4 The formose ‘reaction’
formaldehyde autocatalysis glycolaldehyde Butlerow, 1861

5 The reductive citric acid cycle

6 PEP carboxylase

7 The catalytic mechanism

8 Chemical evolution was a race between tar formation and life formation
Chemical networks Tar Life What fraction of planets would end up with just tar?

9 Benner’s hypothetical ribo-organism (1999)
Membrane? Cofactors?

10 Another case: von Kiedrowski’s replicators

11 Von Kiedrowski’s replicator

12 Peptide replicator networks

13 The Soi reaction

14 Toward ribozyme self-replication

15 Towards a general polymerase

16 Anabolic autocatalysis I

17 Anabolic autocatalysis II

18 Towards replicable nanostructures

19 Gánti’s chemoton model (1974)
metabolism template copying membrane growth ALL THREE SUBSYSTEMS ARE AUTOCATALYTIC

20 Pathways of supersystem evolution
metabolism M B boundary M T M B T template B T INFRABIOLOGICAL SYSTEMS

21 Szostak’s vesicles


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