Table 1 Selected proteins with altered abundance under H₂ limitation.

Methanogenesis

MMP0820

FrcA, coenzyme F₄₂₀-reducing hydrogenase

1.30 ± 0.56

MMP1382

FruA, coenzyme F₄₂₀-reducing hydrogenase

0.77 ± 0.16

MMP1384

FruG, coenzyme F₄₂₀-reducing hydrogenase

0.88

MMP1385

FruB, coenzyme F₄₂₀-reducing hydrogenase

0.90

MMP1460

EhaM, energy-conserving hydrogenase A

0.56 ± 0.08

MMP1463

EhaP, energy-conserving hydrogenase A polyferredoxin subunit

0.64 ± 0.27

MMP0058

Mer, methylenetetrahydromethanopterin reductase

0.58

MMP1245

FwdF, formylmethanofuran dehydrogenase

0.20

MMP1247

FwdD, formylmethanofuran dehydrogenase

0.23

MMP1248

FwdA, formylmethanofuran dehydrogenase

0.27

MMP1249

FwdC, formylmethanofuran dehydrogenase

0.28 ± 0.07

MMP1697

HdrA, heterodisulfide reductase

0.35 ± 0.18

MMP1696

VhuD, F₄₂₀ non-reducing hydrogenase

0.35 ± 0.11

MMP1695

VhuG, F₄₂₀ non-reducing hydrogenase

0.34

MMP1694

VhuA, F₄₂₀ non-reducing hydrogenase

0.29

MMP0372

Mtd, F₄₂₀-dependent methylenetetrahydromethanopterin dehydrogenase

0.35 ± 0.10 (0.89)^b

MMP1054

HdrC2, heterodisulfide reductase

0.33

MMP1053

HdrB2, heterodisulfide reductase

0.33 ± 0.11

MMP1563

MtrB, methyltransferase

0.27 ± 0.16

MMP1564

MtrA, methyltransferase

0.09

MMP0127

Hmd, H₂-dependent methylenetetrahydromethanopterin dehydrogenase

-2.08 (-3.57)^b

MMP0125

Hypothetical protein

-1.19

MMP0875

S-layer protein

-1.25

MMP1176

Putative iron transporter subunit

-0.83

MMP1206

GlnA, glutamine synthetase

-0.35