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Table 2 General features of eight complete genomes of Bifidobacterium breve

From: Comparative genomics of the Bifidobacterium brevetaxon

FEATURE B. breveUCC2003 B. breveS27 B. breve689b B. breveNCFB 2258 B. breveJCM 7017 B. breveJCM 7019 B. breve12L B. breveACS-071-V-Sch8b Average value
Genome length (bp) 2,422,684 2,294,458 2,331,707 2,315,904 2,288919 2,359,009 2,244,624 2,327,492 2,323,100
Number of genes 1854 1748 1821 1834 1770 1915 1765 1826 1817
tRNA 54 51 52 52 52 55 52 53 53
rRNA 2 3 2 2 2 2 2 2 2
Hypothetical proteins 27% 27% 28% 26% 24% 27% 27% 20% 26%
Genes with assigned function 73% 73% 72% 74% 76% 73% 73% 80% 74%
IS elements/ transposases 49 25 32 36 38 54 40 12 36
Plasmid - - - 1 - - - - 1
Prophage/Integrated episome 1 (remnant) 1 1 (remnant) - - 1 - - 1
CRISPR 1 1 - 1 1 1 - 1 1