The motile, predominantly square-shaped, red archaeon strain 801030/1, isolated from a brine pool in the Sinai peninsula (Egypt), was characterized taxonomically. On the basis of its polar lipid composition, the nucleotide sequences of its two 16S rRNA genes, the DNA G+C content (60·1 mol%) and in growth characteristics, the isolate could be assigned to the genus . However, phylogenetic analysis of the two 16S rRNA genes detected in this organism and low DNA-DNA hybridization values with related species showed that strain 801030/1 is sufficiently different from the recognized species to warrant its designation as a new species. A new species, , is therefore proposed, with strain 801030/1 (= DSM 11927) as the type strain.


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