Engineering Methylobacterium as a C1 biomanufacturing platform: Metabolic architecture, regulatory networks, and synthetic biology strategies.

Methylobacterium’s lanthanide-switchable PQQ-dependent methanol oxidation, H₄MPT formaldehyde buffering, and serine-cycle/EMC coupling provide a programmable metabolic framework for C1 biomanufacturing.

• Why it matters: Methanol is a promising, sustainable one-carbon feedstock, but building reliable biomanufacturing strains requires understanding and controlling the linked carbon flux, redox balance, and energy efficiency of methylotrophy.
• What they did: This review synthesizes Methylobacterium metabolic architecture and regulatory networks, then surveys engineering strategies such as global transcriptional regulation, metabolic valve control, and photo-methylotrophic configurations for producing multiple chemical classes.
• The result: The framework enables product–chassis matching and highlights bottlenecks limiting titer, yield, and scale-up, guiding future work focused on regulatory control, flux coordination, and robustness using low-cost feedstocks.

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