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

Category: Species

Proposed as: comb. nov.

Basonym: Methanobacterium thermoflexum Kotelnikova et al. 1994

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

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

Type strain: ATCC 51444; DSM 7268; IDZ; OCM 571; VKM B-1963

See detailed strain information at

16S rRNA gene: X99047 Analyse FASTA

Effective publication: Boone DR. Genus IV. Methanothermobacter Wasserfallen, Nölling, Pfister, Reeve and Conway de Macario 2000, 51VP. In: Boone DR, Castenholz RW, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, 2nd edn, vol. 1 (The Archaea and the Deeply Branching and Phototrophic Bacteria), Springer, New York, 2001, p. 232-233.

IJSEM list: Anonymous. Validation list no. 85. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2002; 52:685-690.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Synonyms:

  • Name	Kind
    "Methanothermobacter thermoflexus" (Kotelnikova et al. 1994) Wasserfallen et al. 2000	homotypic synonym, not validly published
    Methanobacterium thermoflexum Kotelnikova et al. 1994	homotypic synonym, validly published under the ICNP

• Notes:
  • 📧 The e-mail address of the corresponding author given in the effective publication is not functional any more.
  • 😷 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.
  • 🎓 Name mentioned 0 times in PubMed until 2025-06-04.
  • 🧍 In Validation List no. 85, the page numbers of the effective publication are erroneously cited as "pp. 232-233". Publication: Anonymous. Validation list no. 85. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2002; 52:685-690.

Parent taxon: Methanothermobacter Wasserfallen et al. 2000

Assigned by: Boone DR. Genus IV. Methanothermobacter Wasserfallen, Nölling, Pfister, Reeve and Conway de Macario 2000, 51VP. In: Boone DR, Castenholz RW, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, 2nd edn, vol. 1 (The Archaea and the Deeply Branching and Phototrophic Bacteria), Springer, New York, 2001, p. 232-233.

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Record number: 777946