Table 2 Metagenomic and metatranscriptomic reads assigned to enzyme classes that catalyse key steps in anaerobic respiration and fermentation, and fermentative pathways
From: Organic carbon transformations in high-Arctic peat soils: key functions and microorganisms
Pathway/function | E.C. | Gene | Metagenomes | Metatranscriptomes | |||||
|---|---|---|---|---|---|---|---|---|---|
S2a | S2b | K1a | K1b | K1c | S1a+S2a | K1a+K2a | |||
Nitrate reduction | 1.9.6.1 | napA | 1 | 6 | 7 | 4 | 1 | 0 | 0 |
Nitrate reduction | 1.7.99.4 | narG | 10 | 6 | 14 | 19 | 28 | 0 | 0 |
Nitrite reduction | 1.7.2.1 | nirK | 1 | 1 | 2 | 3 | 3 | 0 | 0 |
Nitrite reduction | 1.7.2.1 | nirS | 0 | 1 | 0 | 2 | 1 | 0 | 2 |
Nitric oxide reduction | 1.7.99.7 | norB | 1 | 4 | 3 | 2 | 4 | 0 | 1 |
Nitrous oxide reduction | 1.7.99.6 | nosZ | 3 | 3 | 1 | 2 | 1 | 0 | 0 |
Sulphate reduction | 1.8.99.3 | dsrA | 0 | 1 | 1 | 4 | 11 | 0 | 0 |
Fermentation: [FeFe] hydrogenase | 1.12.7.2 | hydA | 2 | 9 | 0 | 7 | 8 | 0 | 0 |
Homoacetogenesis | 6.3.4.3 | fthfs | 6 | 12 | 7 | 10 | 23 | 0 | 0 |
Methanogenesis | 2.8.4.1 | mcrA | 0 | 0 | 1 | 0 | 2 | 0 | 0 |
Acetoin, butanediol metabolism | 55 | 92 | 60 | 85 | 133 | 8 | 8 | ||
Acetone, butanol, ethanol synthesis | 243 | 298 | 319 | 280 | 346 | 17 | 17 | ||
Acetyl-CoA fermentation to butyrate | 310 | 362 | 406 | 329 | 407 | 16 | 22 | ||
Butanol biosynthesis | 235 | 293 | 315 | 263 | 308 | 9 | 19 | ||
Fermentations: lactate | 52 | 76 | 56 | 74 | 104 | 2 | 3 | ||
Fermentations: mixed acid | 107 | 157 | 121 | 131 | 190 | 5 | 8 | ||
Tot. ass. sequences | 69 176 | 63 527 | 85 664 | 54 889 | 72 166 | 6315 | 6205 | ||
