The family methanopyraceae

Aharon Oren*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


The family Methanopyraceae currently consists of a single genus with a single species: Methanopyrus kandleri. It is a rod-shaped chemolithoautotrophic methanogenic archaeon that grows optimally at 98 °C and grows up to 110 °C and possibly higher under high hydrostatic pressure, making it the most extreme thermophile among the methanogens. No growth is observed below 84 °C. Strains of M. kandleri were isolated from marine hydrothermal vent systems. The organism contains 2,3-di-O-phytanyl-sn-glycerol and 2,3-di-O-geranylgeranyl-sn-glycerol lipids. In 16S rRNA phylogenetic trees, it forms a very deep branch near the root of the Archaea, remote from the other lineages of methanogens. However, in trees based on concatenated alignments of ribosomal proteins or proteins involved in transcription, M. kandleri consistently groups with other methanogens, suggesting that the methanogens are a monophyletic group of Archaea.

Original languageAmerican English
Title of host publicationThe Prokaryotes
Subtitle of host publicationOther Major Lineages of Bacteria and The Archaea
PublisherSpringer-Verlag Berlin Heidelberg
Number of pages6
ISBN (Electronic)9783642301230
ISBN (Print)3642389538, 9783642301223
StatePublished - 1 Jul 2014

Bibliographical note

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© Springer-Verlag Berlin Heidelberg 2014. All rights reserved.


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