title: Metagenomics of Kamchatkan hot spring filaments reveal two new major (hyper)thermophilic lineages related to Thaumarchaeota.
abstract: Based on phylogenetic analyses and gene distribution patterns of a few complete genomes, a new distinct phylum within the Archaea, the Thaumarchaeota, has recently been proposed. Here we present analyses of six archaeal fosmid sequences derived from a microbial hot spring community in Kamchatka. The phylogenetic analysis of informational components (ribosomal RNAs and proteins) reveals two major (hyper-)thermophilic clades ("Hot Thaumarchaeota-related Clade" 1 and 2, HTC1 and HTC2) related to Thaumarchaeota, representing either deep branches of this phylum or a new archaeal phylum and provides information regarding the ancient evolution of Archaea and their evolutionary links with Eukaryotes.
authors.affiliation: Aix-Marseille Université, Laboratoire de Chimie Bacterienne - UMR CNRS 7283, IFR88, 31 chemin Joseph Aiguier, F-13402 Marseille, France.
authors.forename: Laura
authors.initials: L
authors.lastname: Eme
authors.forename: Laila J
authors.initials: LJ
authors.lastname: Reigstad
authors.forename: Anja
authors.initials: A
authors.lastname: Spang
authors.forename: Anders
authors.initials: A
authors.lastname: Lanzén
authors.forename: Thomas
authors.initials: T
authors.lastname: Weinmaier
authors.forename: Thomas
authors.initials: T
authors.lastname: Rattei
authors.forename: Christa
authors.initials: C
authors.lastname: Schleper
authors.forename: Céline
authors.initials: C
authors.lastname: Brochier-Armanet
mesh_terms: D001105:Archaea / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification*; D058448:Biota; D016000:Cluster Analysis; D045482:Hot Springs / Q000382:microbiology*; D054892:Metagenome; D008969:Molecular Sequence Data; D010802:Phylogeny; D012426:Russia; D017422:Sequence Analysis, DNA