A Multi-enzyme Cascade for the Biosynthesis of AICA Ribonucleoside Di- and Triphosphate.


Journal

Chembiochem : a European journal of chemical biology
ISSN: 1439-7633
Titre abrégé: Chembiochem
Pays: Germany
ID NLM: 100937360

Informations de publication

Date de publication:
04 02 2022
Historique:
revised: 01 12 2021
received: 31 10 2021
pubmed: 4 12 2021
medline: 9 3 2022
entrez: 3 12 2021
Statut: ppublish

Résumé

AICA (5'-aminoimidazole-4-carboxamide) ribonucleotides with different phosphorylation levels are the pharmaceutically active metabolites of AICA nucleoside-based drugs. The chemical synthesis of AICA ribonucleotides with defined phosphorylation is challenging and expensive. In this study, we describe two enzymatic cascades to synthesize AICA derivatives with defined phosphorylation levels from the corresponding nucleobase and the co-substrate phosphoribosyl pyrophosphate. The cascades are composed of an adenine phosphoribosyltransferase from Escherichia coli (EcAPT) and different polyphosphate kinases: polyphosphate kinase from Acinetobacter johnsonii (AjPPK), and polyphosphate kinase from Meiothermus ruber (MrPPK). The role of the EcAPT is to bind the nucleobase to the sugar moiety, while the kinases are responsible for further phosphorylation of the nucleotide to produce the desired phosphorylated AICA ribonucleotide. The selected enzymes were characterized, and conditions were established for two enzymatic cascades. The diphosphorylated AICA ribonucleotide derivative ZDP, synthesized from the cascade EcAPT/AjPPK, was produced with a conversion up to 91 %. The EcAPT/MrPPK cascade yielded ZTP with conversion up to 65 % with ZDP as a side product.

Identifiants

pubmed: 34859954
doi: 10.1002/cbic.202100596
pmc: PMC9299608
doi:

Substances chimiques

Polyphosphates 0
Ribonucleotides 0
Aminoimidazole Carboxamide 360-97-4
Adenine Phosphoribosyltransferase EC 2.4.2.7
Phosphotransferases (Phosphate Group Acceptor) EC 2.7.4.-
polyphosphate kinase EC 2.7.4.1
AICA ribonucleotide F0X88YW0YK
triphosphoric acid NU43IAG5BC

Types de publication

Journal Article Research Support, Non-U.S. Gov't

Langues

eng

Sous-ensembles de citation

IM

Pagination

e202100596

Subventions

Organisme : Deustche Forschungsgemeinschaft (DFG)
ID : LO 2678/2-1

Informations de copyright

© 2021 The Authors. ChemBioChem published by Wiley-VCH GmbH.

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Auteurs

Lobna Eltoukhy (L)

Chair of Molecular Biotechnology Institute for Microbiology, Technische Universität Dresden, Zellescher Weg 20b, 01217, Dresden, Germany.

Christoph Loderer (C)

Chair of Molecular Biotechnology Institute for Microbiology, Technische Universität Dresden, Zellescher Weg 20b, 01217, Dresden, Germany.

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Classifications MeSH