Complete genome sequence of Anaerococcus prevotii type strain (PC1)

Abstract

Anaerococcus prevotii (Foubert and Douglas 1948) Ezaki et al. 2001 is the type species of the genus, and is of phylogenetic interest because of its arguable assignment to the provisionally arranged family 'Peptostreptococcaceae'. A. prevotii is an obligate anaerobic coccus, usually arranged in clumps or tetrads. The strain, whose genome is described here, was originally isolated from human plasma; other strains of the species were also isolated from clinical specimen. Here we describe the features of this organism, together with the complete genome sequence and annotation. This is the first completed genome sequence of a member of the genus. Next to Finegoldia magna, A. prevotii is only the second species from the family 'Peptostreptococcaceae' for which a complete genome sequence is described. The 1,998,633 bp long genome (chromosome and one plasmid) with its 1852 protein-coding and 61 RNA genes is a part of the Genomic Encyclopedia of Bacteria and Archaea project.

Keywords: Clostridiales; Firmicutes; Gram-positive; anaerobic; coccoid; human oral microflora; non-motile; non-sporulating; skin; ‘Peptostreptococcaceae’.

Figure 1

Phylogenetic tree highlighting the position of A. prevotii PC1^T relative to all type strains of the genus Anaerococcus and the type strains of all other genera within the family ‘Peptostreptococcaceae’ inferred from 1,302 aligned characters [7,8] of the 16S rRNA sequence under the maximum likelihood criterion [9]. Rooting was done with the type species of the genus Clostridium. The branches are scaled in terms of the expected number of substitutions per site. Numbers above branches are support values from 1,000 bootstrap replicates if larger than 60%. Lineages with type strain genome sequencing projects registered in GOLD [10] are shown in blue, published genomes in bold.

Figure 2

Scanning electron micrograph of A. prevotii PC1^T (M. Rohde, HZI Braunschweig)

Figure 3

Graphical circular map of the genome. From outside to the center: Genes on forward strand (color by COG categories), Genes on reverse strand (color by COG categories), RNA genes (tRNAs green, sRNAs red, other RNAs black), GC content, GC skew.