Name: "Methanothermobacter thermoflexus" (Kotelnikova et al. 1994) Wasserfallen et al. 2000

Category: Species

Proposed as: comb. nov.

Basonym: Methanobacterium thermoflexum Kotelnikova et al. 1994

Etymology: ther.mo.fle’xus. L. masc. perf. part. flexus, a bending; N.L. masc. part. adj. thermoflexus, heat-(loving) and bent or crooked

Pronunciation, gender: t^her-mo-FLE-xus, masculine

Nomenclatural type: ATCC 51444; DSM 7268; IDZ; OCM 571; VKM B-1963

See detailed strain information at

16S rRNA gene: X99047 Analyse FASTA

Original publication: Wasserfallen A, Nolling J, Pfister P, Reeve J, Conway de Macario E. Phylogenetic analysis of 18 thermophilic Methanobacterium isolates supports the proposals to create a new genus, Methanothermobacter gen. nov., and to reclassify several isolates in three species, Methanothermobacter thermautotrophicus comb. nov., Methanothermobacter wolfeii comb. nov., and Methanothermobacter marburgensis sp. nov. Int J Syst Evol Microbiol 2000; 50:43-53.

Nomenclatural status: not validly published

Taxonomic status: synonym (and no standing)

Correct name: Methanothermobacter thermoflexus (Kotelnikova et al. 1994) Boone 2002

Risk group: 1

• Synonyms:

  • Name	Kind
    Methanothermobacter thermoflexus (Kotelnikova et al. 1994) Boone 2002	homotypic synonym, validly published under the ICNP
    Methanobacterium thermoflexum Kotelnikova et al. 1994	homotypic synonym, validly published under the ICNP

• Notes:
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 1. — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1. — If in doubt, use the risk group given in the regulations for your country and, if these are not available, use the risk group given in the catalogue of the culture collection from which you have obtained or intend to obtain the strain.
  • 🧍 Considered not validly published (name mentioned incidentally). Publication: Oren A, Arahal DR, Goker M, Moore ERB, Rossello-Mora R, Sutcliffe IC. International Code of Nomenclature of Prokaryotes. Prokaryotic Code (2022 Revision). Int J Syst Evol Microbiol 2023; 73:5585.

Parent taxon: Methanothermobacter Wasserfallen et al. 2000

Assigned by: Wasserfallen A, Nolling J, Pfister P, Reeve J, Conway de Macario E. Phylogenetic analysis of 18 thermophilic Methanobacterium isolates supports the proposals to create a new genus, Methanothermobacter gen. nov., and to reclassify several isolates in three species, Methanothermobacter thermautotrophicus comb. nov., Methanothermobacter wolfeii comb. nov., and Methanothermobacter marburgensis sp. nov. Int J Syst Evol Microbiol 2000; 50:43-53.

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Record number: 16747