σ<sup>54</sup> (σ<sup>L</sup>) plays a central role in carbon metabolism in the industrially relevant Clostridium beijerinckii.

Sci Rep · 2019 · PMC6510779 · PMID 31076628

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may be significantno p-value reported

Besides, downregulation of the butanol and secondary alcohol dehydrogenases linked to σ 54 potential inactivation would match the AA phenotype, which gives another hint that sigL mutation may be significant.

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