Molecular Evidence
Support for this superphylum has been found by examining the RNA polymerase protein RpoB. This protein has a unique 3 amino acid insert in all sequenced Chlamydiae, Lentisphaerae and Verrucomicrobia species. A conserved protein of unknown function is present in all sequenced species from the phyla Chlamydiae, Lentisphaerae, Planctomycetes and Verrucomicrobia. This protein is absent in the Poribacteria.
Additional lines of evidence for the existence of this clade have been found. These include the presence of membrane coat like proteins, tubulin, sterol synthesis and the presence of condensed DNA.
Study of additional proteins from this proposed syperphylum suggests that the Poribacteria may be separate from this clade. The Planctomycetes may be basal to the Chlamydiae-Verrucomicrobia-Lentisphaerae clade.
Read more about this topic: Planctobacteria
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