Self-Sufficient Heterogeneous Biocatalysis through Boronic Acid-Diol Complexation of Adenylated Cofactors

Diamanti, Eleftheria ; Velasco-Lozano, Susana ; Grajales-Hernández, Daniel ; Orrego, Alejandro H. ; Di Silvio, Desiré ; Fraile, José María ; López-Gallego, Fernando

Resumen: Self-sufficient heterogeneous biocatalysts (ssHB) are promising candidates for implementing cofactor-dependent enzymes in chemical biomanufacturing. Most strategies for coimmobilizing cofactors with dehydrogenases on porous agarose microbeads involve the use of cationic polymers (i.e., polyethylenimine, PEI) that interact electrostatically with the phosphate groups of their corresponding phosphorylated cofactors. Although the latter is a powerful and versatile approach, ionic bonds are disrupted in biotransformations operating at a high ionic strength, where screening of bonded ions takes place. Harnessing the ribose groups present in adenylated cofactors, we immobilize a selection of these (NAD(P)H, NAD(P)+, FAD, and ATP) on agarose microbeads functionalized with boronic acid to establish reversible covalent bonds between the cis-diol of the ribose in the cofactor backbone and the boronic acid. To do so, we functionalize cobalt-activated porous agarose beads with boronic acid (AG-B/Co2+) for the coimmobilization of adenylated cofactors with the corresponding cofactor dependent His-tagged dehydrogenases. First, we demonstrate that the adenylated cofactor-support interactions are reversible but show resistance against high salt concentrations, overcoming the main limitation of the current self-sufficient heterogeneous biocatalysts. Then, we coimmobilized several His-tagged enzymes with their corresponding adenylated cofactors and investigated the functionality and stability of these ssHBs in reductive aminations performed under high ionic strength in both batch and flow reactors. As a result, we manage to reuse the immobilized enzymes and the cofactors 3.5 × 105 and 167 times, respectively. This work expands the usefulness of ssBHs for hitherto bioprocess regardless of the ionic strength of the media.

Idioma: Inglés

DOI: 10.1021/acssuschemeng.3c02958

Año: 2023

Publicado en: ACS Sustainable Chemistry and Engineering 11, 39 (2023), 14409-14421
ISSN: 2168-0485

Factor impacto JCR: 7.1 (2023)

Categ. JCR: ENGINEERING, CHEMICAL rank: 21 / 170 = 0.124 (2023) - Q1 - T1
Categ. JCR: GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY rank: 21 / 91 = 0.231 (2023) - Q1 - T1
Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 43 / 231 = 0.186 (2023) - Q1 - T1

Factor impacto CITESCORE: 13.8 - Renewable Energy, Sustainability and the Environment (Q1) - Chemistry (all) (Q1) - Chemical Engineering (all) (Q1) - Environmental Chemistry (Q1)

Factor impacto SCIMAGO: 1.664 - Environmental Chemistry (Q1) - Renewable Energy, Sustainability and the Environment (Q1) - Chemistry (miscellaneous) (Q1) - Chemical Engineering (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/EC/H2020/818089/EU/Artificial metabolic cells for biomanufacturing of bio-based chiral fine chemicals/METACELL
Financiación: info:eu-repo/grantAgreement/ES/MICINN/MDM-2017-0720

Tipo y forma: Article (PostPrint)