ライフサイエンスコーパス: methanogen

1 ation for cold adaptation in a psychrophilic methanogen.

2 oil metagenome, which corresponds to a novel methanogen.

3 hydrogen availability for a hydrogenotrophic methanogen.

4 lower than that of any previously described methanogen.

5 ding two halophiles, two Thermoplasma, and a methanogen.

6 st operate during expression of mtmB in this methanogen.

7 d the genus Anaerobranca provide acetate for methanogen.

8 NA(Cys) to cysteinyl-tRNA(Cys) in nearly all methanogens.

9 the biosynthesis of aromatic amino acids in methanogens.

10 dizing acetogens and carbon dioxide-reducing methanogens.

11 rst in clostridia and later in acetogens and methanogens.

12 es suggested that Trx is nearly universal in methanogens.

13 d by specific PCR assays for the presence of methanogens.

14 es which usually contain both fermenters and methanogens.

15 consumption of water-derived H(2) like other methanogens.

16 bably due to increased carbon substrates for Methanogens.

17 vity of this as well as other enzymes in the methanogens.

18 ain architecture unique to a select group of methanogens.

19 mental unambiguous trace metal biomarker for methanogens.

20 tic terrestrial samples and pure cultures of methanogens.

21 Methanobacteriales, which are H(2)-oxidizing methanogens.

22 indispensable and fundamental function(s) in methanogens.

23 Sulfite is inhibitory to the methanogens.

24 , two strictly hydrogenotrophic thermophilic methanogens.

25 leri consistently groups with other archaeal methanogens.

26 g UAG amber codons as pyrrolysine in certain methanogens.

27 essential in methane-forming pathways in all methanogens.

28 t are found in some extreme thermophiles and methanogens.

29 nergy-conserving electron transfer system in methanogens.

30 within the nif gene cluster of diazotrophic methanogens.

31 hat are phylogenetically distinct from known methanogens.

32 transcription may be a common occurrence in methanogens.

33 ity with those of peptides of SHMTs from two methanogens.

34 he importance of Methanoregula as generalist methanogens.

35 eria were immediately active and outcompeted methanogens.

36 ectively screened by specific PCR assays for methanogens.

37 ction of H2, the "fuel" for hydrogenotrophic methanogens.

38 yarchaeota and was significantly enriched in methanogens.

39 tronarchaeia' from all known methyl-reducing methanogens.

40 ilization of produced H2 by hydrogenotrophic methanogens.

41 ophic fermentation of organic compounds with methanogens.

42 ways to facilitate interactions with partner methanogens.

43 an active physiologic role as a reservoir of methanogens.

44 t are thought to have evolved from anaerobic methanogens.

45 entatives of the AD-associated syntrophs and methanogens.

46 genotrophic (Methanoregula and Methanolinea) methanogens.

47 Notably, methanogen 16S rRNA signatures were absent in all Illumi

48 In ancestral methanogens, a third protein SepCysE forms a bridge betw

49 c strains (e.g., Methanosarcina), decreasing methanogen abundance (18-98% in hgcA copies) and activit

50 Tree diameter was the strongest predictor of methanogen abundance, but wood moisture content and pH w

51 stry of strict anaerobes such as clostridia, methanogens, acetogens, and sulfate-reducing bacteria an

52 pecies-level taxa positively correlated with methanogens: all but two were members of the Clostridial

53 inage substantially lowered the abundance of methanogens along with methanotrophic bacteria, which ma

54 ly attributable to the decreased activity of methanogens along with the increased CH4 oxidation activ

55 nd Fe-dinitrogenases and suggested that most methanogens also have molybdenum-type nitrogenases.

56 lyzes the Sep-tRNA to Cys-tRNA conversion in methanogens, also possess a [3Fe-4S] cluster similar to

57 ining characteristic of the hydrogenotrophic methanogens, an ancient group that dominates the phylum

58 ents new research avenues for this forgotten methanogen and reminds us of the questions that still re

59 suggested that a Methanothermobacter-related methanogen and synergistetes- and thermotogae-related ba

60 Hydrogenotrophic methanogens and Acidobacteria dominated the bog shifting

61 CH4 production derived from pure cultures of methanogens and anaerobic microbial communities.

62 local carbon cycling, depending on how these methanogens and associated microbial communities respond

63 ase (ACDS) is a multienzyme complex found in methanogens and certain other Archaea that carries out t

64 as that found in part in other diazotrophic methanogens and except for the presence of the glnB-like

65 Many archaeal sequences (methanogens and halophiles) tend to align best with the

66 Coenzyme F420 is a redox cofactor found in methanogens and in various actinobacteria.

67 Percent abundances of methanogens and iron-reducing bacteria correlated with i

68 quencing demonstrated a similar abundance of methanogens and methanogenesis pathway genes in high and

69 Although the existence of both methanogens and methanotrophs has been inferred from bul

70 orrelation between the relative abundance of methanogens and methanotrophs was observed over sediment

71 tly vertical evolution of mcrABG genes among methanogens and methanotrophs, along with frequent horiz

72 s the rRNA and mRNA transcript abundances of methanogens and methanotrophs, but they showed no recove

73 The presence of DFTR exclusively in ancient methanogens and mostly in the early Earth environment of

74 y related genes occur in the genomes of some methanogens and other anaerobic bacteria, which are also

75 Methanogens and reductive acetogens correlated with detr

76 e only distantly related to previously known methanogens and span the entire archaeal phylogeny.

77 hic conditions are typically supported by H2 Methanogens and sulfate reducers, and the respective ene

78 enotrophs in the gut, rather than acetogens, methanogens and sulfate reducers.

79 the relatively low abundance and activity of methanogens and sulfate reducers.

80 The increase of hydrogenotrophic methanogens and syntrophic Desulfovibrio and the decreas

81 the CO(2) reduction pathway are confined to methanogens and the domain Archaea.

82 core genes found in genomes of all sequenced methanogens and the phylogenetic position, we hypothesiz

83 ed to stimulate gas recovery could stimulate methanogens and their rate of producing methane.

84 CH(4) flux was positively correlated with methanogens and water table, but negatively correlated w

85 of scales, they can be considered the oldest methanogens and/or methanotrophs that thrived in an ultr

86 crop growth as well as alter CH 4 producing (Methanogens) and consuming (Methanotrophs) microbes, and

87 is present in both methylotrophs and complex methanogens, and both the MEDS and PocR domains show a l

88 microbial richness, exhaled CH4, presence of methanogens, and enterotypes enriched with Clostridiales

89 :CO(2) oxidoreductase activity in acetogens, methanogens, and some CO-using bacteria.

90 rinating populations (fermenters, acetogens, methanogens, and sulfate reducers) were assessed via qua

91 nd iron- (FeRB) reducing bacteria, including methanogens, and syntrophic, acetogenic, and fermentativ

92 teine and its incorporation into proteins in methanogens, and the first experimental validation of th

93 rticular conditions, such as diverticulosis, methanogens appear important.

94 Detection of methanogens appeared to be dependent on diet and whether

95 Methanogens are a diverse group of archaea that play a c

96 Methanogens are antibiotic-resistant anaerobic archaea t

97 These methanogens are heterotrophic methyl-reducers that use C

98 This study explores whether those methanogens are indigenous to the shale or are introduce

99 iogas production processes when aceticlastic methanogens are inhibited.

100 These findings indicate that archaeal methanogens are monophyletic.

101 We hypothesized that methanogens are part of the anaerobic community that cau

102 Methanogens are prominent in heartwood (mean 34% relativ

103 Contemporary methanogens are restricted to anaerobic habitats and may

104 terial uidA transcript was translated in the methanogen as pyrrolysine with 20% efficiency, suggestin

105 and had a greater proportion of Bacteria and methanogens, as measured by quantitative polymerase chai

106 In contrast, methanogens assimilate the light isotopes, yielding resi

107 owing: (i) the pure culture cultivation of a methanogen at an ultralow, near ecologically relevant p(

108 and energy resource generated dominantly by methanogens at low temperatures and through the breakdow

109 l population showed significant increases in methanogens at the later stages of treatment that correl

110 ons and contained various thermal classes of methanogens based on cultivation and mcrA/mrtA analyses.

111 Methanogens belong to the anaerobic community responsibl

112 d that the DapL pathway is present in marine methanogens belonging to the Methanococcales.

113 The methanogen beta subunit A-cluster is proposed to consist

114 zyme family supports the hypothesis that the methanogens branched from other prokaryotes and eukaryot

115 ococcus lineage (which is the deepest of the methanogen branchings) and that of Thermococcus (the dee

116 experiments showed that CO was inhibitory to methanogens, but not to bacteria, at CO partial pressure

117 ition, we hypothesize that the MSBL1 are not methanogens, but probably sugar-fermenting organisms cap

118 ty of anaerobes, including iron reducers and methanogens; but sulfate reduction is the metabolic proc

119 Abundance of the methanogen Candidatus 'Methanoflorens stordalenmirensis'

120 f methanogens in these peatlands, indigenous methanogens capable of growth at acidic pH values have r

121 The concordance rate for methanogen carriage was significantly higher for MZ vers

122 Methanogens catalyze the critical methane-producing step

123 lysaccharide and flocculation of heterotroph-methanogen cellular aggregates.

124 These methanogens charge tRNA(Cys) with l-phosphoserine, which

125 sis of 16S rRNA gene sequences revealed that methanogens closely related to Candidatus 'Methanofloren

126 Spikes of excess methanogens coincident with CH(4) spikes are found at th

127 ogeochemistry, examine relationships between methanogen community structure and CH4 dynamics in situ,

128 Three possible methanogen consensus BoxA sequences as well as two sets

129 es in the Witwatersrand Basin, South Africa, methanogens contribute <5% of the total DNA and appear t

130 The results indicate that a methanogen couples motility to hydrogen concentration se

131 a acetivorans C2A, a metabolically versatile methanogen devoid of significant hydrogen metabolism, to

132 coccus that have not been widely used in the methanogens: directed mutagenesis and reporter gene fusi

133 f metabolic intermediates, with Bacteria and methanogens distributed throughout the length of the col

134 Consistent with this hypothesis, methanogens do not utilize sulfate as a sulfur source, C

135 Specifically, syntrophs and methanogens dominant in raw water (RW) disappeared after

136 arbon, is the primary energy source for this methanogen-dominated microbial community.

137 n carbon substrates favored hydrogenotrophic methanogens (e.g., Methanobacterium) lacking the hgcA me

138 eams, and (4) understanding methanotroph and methanogen ecology.

139 The finding of an abundance of anaerobic methanogens enriched at the surface where oxygen levels

140 of three basic phenotypes: they were either methanogens, extreme halophiles, or ('sulphur-dependent'

141 The only exception were methanogens, for which efficient As methylation was seem

142 bial communities on Mars and Europa in which methanogens form the base of the ecosystem.

143 cteria 'syntrophs' and methanogenic Archaea 'methanogens' form a unique metabolic interaction to acco

144 self from the predominantly hydrogenotrophic methanogens found in euryarchaeal orders as the former d

145 Reports of methanogens from wood of trees were prominent in the lit

146 aracteristics and the abundance of bacteria, methanogens, fungi, or protozoa.

147 annaschii--a deeply rooted hyperthermophilic methanogen growing only on H2 plus CO2.

148 tral reaction of acetyl C-C bond cleavage in methanogens growing on acetate and is also responsible f

149 he slow EVO hydrolysis and acetate-utilizing methanogens growth could contribute to longer term biore

150 vanced genetic techniques are available--the methanogens, halophiles, Sulfolobales, and Thermococcale

151 rom CO(2), no structure of a CODH/ACS from a methanogen has been reported.

152 As such, reductive dissolution of FeS(2) by methanogens has important implications for element cycli

153 dian lengths of 20-40 nt), 51% mRNAs of this methanogen have large 5' UTR (>50 nt).

154 liquid product separation and persistence of methanogens, have prevented the production of bioproduct

155 were apparently utilized by hydrogenotrophic methanogens, homoacetogens, and carboxylate-to-alcohol r

156 A fast growing hydrogenotrophic methanogen (i.e., Methanoculleus bourgensis MS2(T)) was

157 mmunity data for AD, the known syntrophs and methanogens identified were clearly representatives of t

158 added to the model for both DHC and the main methanogen in the culture (a Methanosaeta species) to pr

159 phic acetate oxidation with hydrogenotrophic methanogens in absence of aceticlastic methanogenesis.

160 lence and competiveness against aceticlastic methanogens in anaerobic environments.

161 Third, iron-reducing bacteria co-occur with methanogens in Arctic soils, and iron-reduction-mediated

162 m MS is forwarded here by its application to methanogens in both hypothesis-driven and discovery mode

163 The results suggest that Trx assists methanogens in combating oxidative stress and synchroniz

164 he proposed dominant role of CO(2) -reducing methanogens in crude oil biodegradation.

165 We quantified methanogens in fecal samples from 40 healthy adult femal

166 a deep phylogenetic lineage of extremophilic methanogens in hypersaline lakes and present analysis of

167 However, methanogens in produced fluids and isotopic signatures o

168 ogens present in shale cores were similar to methanogens in produced fluids.

169 e anode and ferementers and hydrogenotrophic methanogens in suspension.

170 the prevalence of archaemia, we searched for methanogens in the blood of febrile patients using speci

171 richment of exoelectrogens and inhibition of methanogens in the microbial community of AGS after anod

172 eta) and hydrogenotrophic (Methanobacterium) methanogens in the stable IBA treatment indicated the im

173 Despite the ubiquity of methanogens in these peatlands, indigenous methanogens c

174 The presence of methanogens in vascular and cardiac tissues was assessed

175 ns (a proxy for cells) and F420 (a proxy for methanogens) in ice cores, we find isolated spikes of fl

176 3), and metagenomics yielded archaea, mostly methanogens, in 28/32 brain abscess samples, and no arch

177 that the genome of M. thermoautotrophicum, a methanogen incapable of growth on formate, lacked the fd

178 ed culture and isolation; these recalcitrant methanogens include members of an uncultured family-leve

179 hree main groups of H(2)-consuming microbes: methanogens including the dominant archaeon, Methanobrev

180 sulfovibrio and the decrease of aceticlastic methanogens indicate a H2-mediated shift toward the hydr

181 stributions of sulfate reducing bacteria and methanogens indicate energy-based selection typical of a

182 So far, methanogens inhabiting hypersaline environments have bee

183 thanogenesis in arsenic volatilization using methanogen inhibitors.

184 Also, our ability to deconstruct a methanogen into an acetogen by merely removing cellular

185 a strictly anaerobic, chemolithoautotrophic methanogen into the heterotrophic, oxygen-respiring, and

186 metric tons of methane produced annually by methanogens is derived from the cleavage of acetate.

187 for sulfide assimilation and trafficking in methanogens is largely unknown.

188 Methane biogenesis in methanogens is mediated by methyl-coenzyme M reductase,

189 The pathogenesis of a methanogen isolate was assessed in a mouse model.

190 ses appear to suppress Fe reducers more than methanogens, leading to increased CH(4) emissions.

191 ane emissions and a decrease in rhizospheric methanogen levels.

192 anopterin biosynthesis has been described in methanogens, little is known about the enzymes and genes

193 m the obligately anaerobic hyperthermophilic methanogen M. jannaschii.

194 ere more abundant in the drained area, while methanogens (mainly hydrogenotrophic) declined significa

195 he protein mapper and in 1.9 microl with the methanogen mapper.

196 time of emergence and diversification, early methanogens may have caused global cooling via the conve

197 occaceae and Lachnospiraceae, as well as the methanogen Methanobrevibacter smithii.

198 Here, we demonstrate that NifB from the methanogen Methanocaldococcus infernus is a radical SAM

199 The MJ1003 and MJ1271 proteins from the methanogen Methanocaldococcus jannaschii formed the firs

200 ily member encoded by the MJ0619 gene in the methanogen Methanocaldococcus jannaschii is likely this

201 of archaeal G1PDH from the hyperthermophilic methanogen Methanocaldococcus jannaschii with bound subs

202 e gamma prefoldin (gammaPFD) in the deep-sea methanogen Methanocaldococcus jannaschii, is integral to

203 led biochemical examination of DHNA from the methanogen Methanocaldococcus jannaschii.

204 d in a non-nitrogen-fixing hyperthermophilic methanogen, Methanocaldococcus jannaschii.

205 ng genes from several archaea, including the methanogen Methanococcus jannaschii and the sulfate-redu

206 The genome sequence of the hyperthermophilic methanogen Methanococcus jannaschii contains homologs of

207 me containing two 36.2-kDa subunits from the methanogen Methanococcus jannaschii.

208 recombinant FtsZ from the hyperthermophilic methanogen Methanococcus jannaschii.

209 ial pathways of H(2) metabolism in the model methanogen Methanococcus maripaludis and using formate a

210 ally tractable, mesophilic, hydrogenotrophic methanogen Methanococcus maripaludis contains 1,722 prot

211 espiration to syntrophic conditions with the methanogen Methanococcus maripaludis.

212 cterium salinarum NRC-1), a hydrogenotrophic methanogen (Methanococcus maripaludis S2), an acidophili

213 i (Hvo); and a hyperthermophilic piezophilic methanogen, Methanococcus jannaschii (Mja).

214 irection of a source of hydrogen gas for the methanogen, Methanococcus maripaludis using a capillary

215 a protein complex from the hydrogenotrophic methanogen, Methanococcus maripaludis, that contains het

216 tion of methanogenesis in a hydrogenotrophic methanogen, Methanococcus maripaludis.

217 ied on the archaellins of related mesophilic methanogens, Methanococcus voltae and Methanococcus mari

218 onstructed defined cocultures comprising the methanogen Methanoculleus bourgensis and one, or several

219 tion start sites (TSSs) of the psychrophilic methanogen Methanolobus psychrophilus R15 and its respon

220 ded with n-alkanes, whereas hydrogenotrophic methanogens (Methanomicrobiales) were enriched with BTEX

221 ed reverse gyrase from the hyperthermophilic methanogen Methanopyrus kandleri is the only known examp

222 nces affiliated with cultivated acetoclastic methanogens (Methanosaetaceae) were enriched in cultures

223 ernix, and MaPgb from the strictly anaerobic methanogen Methanosarcina acetivorans.

224 ction of all three enzymes in the mesophilic methanogen Methanosarcina mazei.

225 lete genome sequence of an acetate-utilizing methanogen, Methanosarcina acetivorans C2A.

226 was closely related to the hydrogenotrophic methanogen Methanospirillum stamsii, while the bacteria

227 analysis uncovered a metabolic shift in the methanogens Methanothrix sp. MA6 and Methanosarcina flav

228 Both infection and vaccination altered methanogens, methanotrophs and the methane metabolism pa

229 CD were coexpressed with mtmB1, encoding the methanogen monomethylamine methyltransferase, UAG was tr

230 Many archaea (including all the methanogens, nearly all euryarchaeotes, and some crenarc

231 ulations of known syntrophs (six clades) and methanogens (nine clades) associated with acid degradati

232 bacterial alternative nitrogenases and other methanogen nitrogenases.

233 ethanocaldococcus jannaschii as well as most methanogens, none of the expected enzymes for the biosyn

234 ic growth on lactate with a hydrogenotrophic methanogen, numerous genes involved in electron transfer

235 groups from most reducing to most oxidizing: methanogens, obligate anaerobes (nonmethanogenic), facul

236 ability (as controlled by dilution rate) and methanogen on the electron transfer systems, ratios of i

237 vergence that has occurred between these two methanogens; only 352 (19%) of M. thermoautotrophicum OR

238 y mediated by several organisms, including a methanogen (operating in reverse) and a sulphate-reducer

239 We hypothesize that methanogens participate in syntrophic relationships in t

240 rime genes of photosynthesis are PHX, and in methanogens, PHX genes include those essential for metha

241 ate, strain MG, was a H(2) :CO(2) -utilizing methanogen, phylogenetically affiliated with the genus M

242 Methanogens present in shale cores were similar to metha

243 A putative methanogen promoter preceded ilvB-ilvN, and a potential

244 Extant methanogens react H2 with CO2 to form methane.

245 ery of extremely halophilic, methyl-reducing methanogens related to haloarchaea provides insights int

246 that form during iron reduction by different methanogens remain to be characterized.

247 Methanogens represent some of the most oxygen-sensitive

248 -tRNA biosynthesis and Cys-tRNA synthesis in methanogens require O-phosophoseryl-tRNA formation.

249 Surprisingly, methanogens revealed a very versatile behavior different

250 samples to identify taxa that co-occur with methanogens, sequenced the genomes of 20 M. smithii stra

251 coccus (the deepest of all branchings on the methanogen side of the tree).

252 the first near-complete genomes for a novel methanogen species, and show acetoclastic production fro

253 We used the methanogen-specific phylogenetic marker mcrA to perform

254 The hydrogenotrophic methanogen strain MG enhanced fatty acid production by f

255 ygen-respiring heterotrophs that derive from methanogens--strictly anaerobic, hydrogen-dependent auto

256 ing the relationship of Archaeoglobus to the methanogens studied.

257 owing energetic coupling to hydrogenotrophic methanogens such as Methanoculleus.

258 roof that Asp-tRNA(Asn) was generated by the methanogen synthetase was the conversion of Asp-tRNA for

259 limited insights into symbiotic syntroph and methanogen ('syntrophy') acid degradation, although they

260 Methanothermococcus thermolithotrophicus, a methanogen that grows optimally at 65 degrees C.

261 ctions centered on Hdr in a hydrogenotrophic methanogen that utilizes multiple electron donors for gr

262 hat the hypolimnion comprised communities of methanogens that are distinct from those in the sediment

263 lum Euryarchaeota includes diverse groups of methanogens that are interspersed with non-methanogenic

264 form cysteinyl-tRNA(Cys) (Cys-tRNA(Cys)) in methanogens that lack the canonical cysteinyl-tRNA synth

265 plex catalyzes the cleavage of acetyl-CoA in methanogens that metabolize acetate to CO(2) and CH(4),

266 Ancient methanogens that produce methane almost exclusively from

267 Furthermore, methanogens that use formate encode at least two isoform

268 f Syto-23-stained cells tracks the excess of methanogens that we identified by their F420 autofluores

269 recently suggested that in hydrogenotrophic methanogens the energy of heterodisulfide reduction powe

270 In methanogens, the acetyl-CoA decarbonylase synthase (ACDS

271 genes coding for NflH and NflD in all known methanogens, their constitutive expression, and their hi

272 sarcineae are the most metabolically diverse methanogens, thrive in a broad range of environments, an

273 s portucalensis FDF1(T) is a model anaerobic methanogen to study the acclimation of water-deficit str

274 sulfate reduction and the marginalization of methanogens to anoxic and sulfate-poor niches.

275 lowed uncultured syntrophic metabolizers and methanogens to be optimally grown and studied biochemica

276 is and shows that the strategies employed by methanogens to thrive in salt-saturating conditions are

277 To address this, genomes that descend from methanogen-to-halophile intermediates are necessary.

278 gradual patterns of gain and loss shaped the methanogen-to-halophile transition.

279 Methanogens use an unusual energy-conserving electron tr

280 the fermentation step, instead of inhibiting methanogens using expensive or toxic chemical inhibitors

281 essential, indicating that currently living methanogens utilize metabolites of this reaction also fo

282 Furthermore, the activity of methanogens was inhibited and minimized by application o

283 Interestingly, alpha-diversity of the methanogens was positively correlated with PMP, while be

284 tmosphere to the production rate by possible methanogens, we estimate that a possible Martian habitat

285 No methanogens were detected in injected fluids, suggesting

286 Methanogens were investigated in 1 index sample using sp

287 ted that sulfate-reducing bacteria (SRB) and methanogens were key methylators.

288 At Endeavour, methanogens were largely undetectable in fluid samples b

289 Fecal methanogens were measured by quantitative polymerase cha

290 asmic HdrABC enzyme complex is found in most methanogens, whereas a membrane-bound HdrED complex is f

291 n of CH4 and associated energy conversion by methanogens, whereas the major thiol in the aerobic phot

292 used by the emerging opportunistic pathogens methanogens which escape routine detection remains to be

293 e reducers, anaerobic methane oxidizers, and methanogens, which each comprise <5% of the total commun

294 usion to the anode side caused inhibition of methanogens, which led to the decrease in chemical oxyge

295 ese results identify a discrete set of rumen methanogens whose methanogenesis pathway transcription p

296 Methanogens with diverse metabolisms were detected acros

297 ere may be high functional redundancy in the methanogens with regard to methane production.

298 recently reported between methylotrophs, and methanogens with respect to their pathways for C(1)-unit

299 study focusing on the community structure of methanogens within the sediment and anoxic hypolimnion w

300 For methanogens without cytochromes, flavin-based electron b