Name: Methanohalophilus mahii Paterek and Smith 1988

Category: Species

Proposed as: sp. nov.

Etymology: ma’hi.i. N.L. gen. masc. n. mahii, of Mah, in honor of Professor Robert A. Mah for his noteworthy research in anaerobic microbiology and on methanogenic bacteria

Pronunciation, gender: MA-hi-i, masculine

Type strain: ATCC 35705; DSM 5219; OCM 68; SLP

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: M59133 Analyse FASTA

Valid publication: Paterek JR, Smith PH. Methanohalophilus mahii gen. nov., sp. nov., a methylotrophic halophilic methanogen. Int. J. Syst. Bacteriol. 1988; 38:122-123.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Notes:
  • 🥇 Nomenclatural type of the genus Methanohalophilus Paterek and Smith 1988. Publication: Paterek JR, Smith PH. Methanohalophilus mahii gen. nov., sp. nov., a methylotrophic halophilic methanogen. Int. J. Syst. Bacteriol. 1988; 38:122-123.
  • 😷 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 6 times in PubMed until 2025-06-04.
  • 🧍 The genome of the type strain was sequenced as part of the GEBA (Genomic Encyclopedia of Bacteria and Archaea) project. Publication: Spring S, Scheuner C, Lapidus A, Lucas S, Glavina Del Rio T, Tice H, Copeland A, Cheng JF, Chen F, Nolan M, et al. The genome sequence of Methanohalophilus mahii SLP^T reveals differences in the energy metabolism among members of the Methanosarcinaceae inhabiting freshwater and saline environments. Archaea 2010; 2010:690737.

Parent taxon: Methanohalophilus Paterek and Smith 1988

Assigned by: Paterek JR, Smith PH. Methanohalophilus mahii gen. nov., sp. nov., a methylotrophic halophilic methanogen. Int. J. Syst. Bacteriol. 1988; 38:122-123.

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Record number: 777897