Archaea

Definition

Archaea are organisms consisting of a single cell without a nucleus and with distinct structural, physiological and evolutionary characteristics. They inhabit a wide range of habitats, including extreme environments. Archaea form one of the three domains of life; the others are bacteria and eukaryotes.

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Latest Research and Reviews

News and Comment

  • News and Views |

    Structural and functional studies of the archaeum Methanocaldococcus jannaschii Argonaute (MjAgo) reveal a DNA-guided DNA nuclease that is also active without a guide. This unguided activity is suggested to prime MjAgo for its subsequent sequence-specific DNA-silencing role in host defence.

    • Lennart Randau
  • News |

    This month's Genome Watch highlights how metagenomics is continuing to reveal the diversity of microorganisms in the environment and how it is challenging and expanding our understanding of how life evolved on Earth.

    • Eva Heinz
    •  & Daryl Domman
  • Comments and Opinion |

    We asked Jill Banfield, a mineralogist-turned-microbiologist, how she became interested in microbial communities, what she thinks about field work, how she manages a multidisciplinary team, and where microbiome studies are headed next.

    • Cláudio Nunes-Alves