Complete genome sequence of Leadbetterella byssophila type strain (4M15)

Abstract

Leadbetterella byssophila Weon et al. 2005 is the type species of the genus Leadbetterella of the family Cytophagaceae in the phylum Bacteroidetes. Members of the phylum Bacteroidetes are widely distributed in nature, especially in aquatic environments. They are of special interest for their ability to degrade complex biopolymers. L. byssophila occupies a rather isolated position in the tree of life and is characterized by its ability to hydrolyze starch and gelatine, but not agar, cellulose or chitin. Here we describe the features of this organism, together with the complete genome sequence, and annotation. L. byssophila is already the 16(th) member of the family Cytophagaceae whose genome has been sequenced. The 4,059,653 bp long single replicon genome with its 3,613 protein-coding and 53 RNA genes is part of the Genomic Encyclopedia of Bacteria and Archaea project.

Keywords: Cytophagaceae; GEBA; Gram-negative; aerobic; flexirubin; mesophile; non-motile; non-sporulating.

Figure 1

Phylogenetic tree highlighting the position of L. byssophila relative to the type strains of the other genera within the family Cytophagaceae. The tree was inferred from 1,340 aligned characters [15,16] of the 16S rRNA gene sequence under the maximum likelihood criterion [17] and rooted with the type strain of the closely related family Sphingobacteriaceae. The branches are scaled in terms of the expected number of substitutions per site. Numbers above branches are support values from 900 bootstrap replicates [18] if larger than 60%. Lineages with type strain genome sequencing projects registered in GOLD [19] are shown in blue, published genomes in bold [4,20,21].

Figure 2

Scanning electron micrograph of L. byssophila 4M15^T

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, rRNAs red, other RNAs black), GC content, GC skew.