Glockner FO, Kube M, Bauer M, Teeling H, Lombardot T, Ludwig W,
Gade D, Beck A, Borzym K, Heitmann K, Rabus R, Schlesner H,
Amann R, Reinhardt R.
Complete genome sequence of the marine planctomycete Pirellula sp. strain 1.
Proc Natl Acad Sci U S A. 2003 Jul 8;100(14):8298-303. Epub 2003 Jun 30.
Pirellula sp. strain 1 ("Rhodopirellula baltica") is a marine representative of
the globally distributed and environmentally important bacterial order
Planctomycetales. Here we report the complete genome sequence of a member of this
independent phylum. With 7.145 megabases, Pirellula sp. strain 1 has the largest
circular bacterial genome sequenced so far. The presence of all genes required
for heterolactic acid fermentation, key genes for the interconversion of C1
compounds, and 110 sulfatases were unexpected for this aerobic heterotrophic
isolate. Although Pirellula sp. strain 1 has a proteinaceous cell wall, remnants
of genes for peptidoglycan synthesis were found. Genes for lipid A biosynthesis
and homologues to the flagellar L- and P-ring protein indicate a former
Gram-negative type of cell wall. Phylogenetic analysis of all relevant markers
clearly affiliates the Planctomycetales to the domain Bacteria as a distinct
phylum, but a deepest branching is not supported by our analyses.
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