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1 School of Biology, King George VIth Building, University of Newcastle, Newcastle upon Tyne NE1 7RU, UK
2 Department of Microbiology, Freeman Hospital, Newcastle upon Tyne NE7 7DN, UK
3 Department of Microbiology, Sunderland Royal Hospital, Kayll Road, Sunderland SR4 7TP, UK
4 Department of Dermatology, Sunderland Royal Hospital, Kayll Road, Sunderland SR4 7TP, UK
Correspondence
Roland J. Koerner
Roland.Koerner{at}chs.northy.nhs.uk
An actinomycete isolated from an immunocompetent patient suffering from confluent and reticulated papillomatosis was characterized using a polyphasic taxonomic approach. The organism had chemotaxonomic and morphological properties that were consistent with its assignment to the genus Dietzia and it formed a distinct phyletic line within the Dietzia 16S rRNA gene tree. It shared a 16S rRNA gene sequence similarity of 98.3 % with its nearest neighbour, the type strain of Dietzia cinnamea, and could be distinguished from the type strains of all Dietzia species using a combination of phenotypic properties. It is apparent from genotypic and phenotypic data that the organism represents a novel species in the genus Dietzia. The name proposed for this taxon is Dietzia papillomatosis; the type strain is N 1280T (=DSM 44961T=NCIMB 14145T).
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