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Table 1 Strains used in present study

From: Strain and bioprocess improvement of a thermophilic anaerobe for the production of ethanol from wood

Strain #

Description of genetic manipulation

Genotype

M355

Markerless KO of genes for acetate and lactate production

pta/ack(−) L-ldh(−)

M795–M809

Mix of strains generated by Panlabs using NTG mutagenesis and selection on wood hydrolysate

pta/ack(−) L-ldh(−)

M863

Selection in Cytostat with synthetic mix of inhibitors and 20 g/L ethanol

pta/ack(−) L-ldh(−)

M1151

Addition of urease, fix of metE and markerless KO of Tsac_0795

pta/ack(−) L-ldh(−) Tsac_0795(−) urease(+) metE(+)

M1291

Markerless KO of putative EPS operon (phosphoglucomutase, UDP-G1P transferase, transmembrane protein, near gene Tsac_1471)

pta/ack(−) L-ldh(−) Tsac_0795(−) urease(+) metE(+) EPSoperon(−)

M1442a

Selection in auxostat for fast growth in glucose, xylose, arabinose, and acetic acid

pta/ack(−) L-ldh(−) Tsac_0795(−) urease(+) metE(+) EPSoperon(−)

M2476

Markerless KO of perR

pta/ack(−) L-ldh(−) Tsac_0795(−) urease(+) metE(+) EPSoperon(−) perR(−)

M2886

Insertion of pta/ack-KanR into methylglyoxal synthase mgs

pta/ack(−) L-ldh(−) Tsac_0795(−) urease(+) metE(+) EPSoperon(−) perR(−) mgs::pta/ack-KanR

  1. aStrain M1442 is also known as LL1049