Uptake system of lignin-derived aromatic acids in promising Sphingomonadaceae strains for lignin valorization through biological funneling
Abstract The production of value-added chemicals from lignin-derived aromatic compounds through bacterial catabolism has attracted attention. Sphingobium lignivorans SYK-6 can catabolize various lignin-derived aromatic compounds that can be used for this purpose. PcaK (Sl-PcaK), a member of the majo...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2025-07-01
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| Series: | Scientific Reports |
| Subjects: | |
| Online Access: | https://doi.org/10.1038/s41598-025-08757-x |
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| Summary: | Abstract The production of value-added chemicals from lignin-derived aromatic compounds through bacterial catabolism has attracted attention. Sphingobium lignivorans SYK-6 can catabolize various lignin-derived aromatic compounds that can be used for this purpose. PcaK (Sl-PcaK), a member of the major facilitator superfamily (MFS) transporters in SYK-6, is known to be involved in the uptake of protocatechuic acid (PCA) and vanillic acid (VA) in the inner membrane. Here, we demonstrated that Sl-PcaK also mediates the uptake of 4-hydroxybenzoic acid (HBA), syringic acid (SA), and ferulic acid (FA). Saro_0804 (Na-pcaK), with 58% amino acid sequence identity to Sl-PcaK, is present in Novosphingobium aromaticivorans DSM 12444. Na-pcaK plays a role in the uptake of PCA, HBA, VA, and SA. The increased expression of Sl-pcaK or Na-pcaK in SYK-6 cells improved the conversion rates of VA, SA, and FA 1.12-1.33-fold compared with the control strain, suggesting that these genes could serve as tools to improve the production efficiency of target metabolites. |
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| ISSN: | 2045-2322 |