Skip to main content
Log in

The kinetics and mechanisms of reactions in the flow systems glycine–sodium trimetaphosphate–imidazoles: the crucial role of imidazoles in prebiotic peptide syntheses

  • Original Article
  • Published:
Amino Acids Aims and scope Submit manuscript

Abstract

The kinetics of oligopeptides formation in the flow systems glycine–sodium trimetaphosphate–imidazole/N-methylimidazole at thermocyclic regime has been investigated by HPLC and 31P NMR methods in the ranges of temperature from 45 to 90 °C and pH from 8.5 to 11.5. Detailed reaction mechanisms have been proposed and justified by quantum chemical calculations using DFT method at the CAM-B3LYP/TZVP level with accounting solvent effect by the C-PCM model. A new imidazole catalysis mechanism by which imidazole reacts with cyclic N,O-phosphoryl glycine giving N-imidazolyl-O-glycyl phosphate as a key intermediate was proposed and validated. It is emphasized that while in the absence of imidazoles, prebiotic activation of amino acids occurs at the N-terminus, in the presence of imidazoles it shifts to the O-terminus. This means that in the peptide elongation N-imidazolyl-O-aminoacyl phosphates play in prebiotic systems the outstanding role similar to that of aminoacyl adenylates formed at the ATP and aminoacyl-tRNA synthetases presence in biosystems. The new crucial role of imidazoles in prebiotic evolution has been noticed. The systems used and modes of their conversion can be good models for prebiotic peptide syntheses in a flow thermocyclic regime.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Scheme 1
Fig. 6
Scheme 2
Fig. 7

Similar content being viewed by others

References

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Valery G. Shtyrlin.

Ethics declarations

Conflict of interest

The authors declare that they have no conflict of interest. This article does not contain any studies with human participants or animals performed by any of the authors.

Additional information

Handling Editor: P. Meffre.

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Electronic supplementary material

Below is the link to the electronic supplementary material.

Supplementary file1 (PDF 2277 kb)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Serov, N.Y., Shtyrlin, V.G. & Khayarov, K.R. The kinetics and mechanisms of reactions in the flow systems glycine–sodium trimetaphosphate–imidazoles: the crucial role of imidazoles in prebiotic peptide syntheses. Amino Acids 52, 811–821 (2020). https://doi.org/10.1007/s00726-020-02854-z

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00726-020-02854-z

Keywords

Navigation