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Table 1 Overall characteristics of the genomes of B. longum strains DJO10A and NCC2705.

From: Comparative genomic analysis of the gut bacterium Bifidobacterium longum reveals loci susceptible to deletion during pure culture growth

  DJO10A NCC2705
Size of chromosome (bp) 2,375,792 2,256,640
Overall G+C % 60.15 60.12
Number of plasmids 2 (10 and 3.6 kb) 1 (3.6 kb)
Genes   
Total genes 1990 1727
Average gene length (bp) 1031 1115
Gene density (genes/kb) 0.838 0.765
Gene coding percentage (%) 86.4 85.3
Gene G+C % 61.13 60.86
Unique Sequences   
Strain-specific unique genes 269 117
Number of unique regionsa 17 6
Number of genes in unique regions 218 84
Prophage 1 1
Number of genes in prophage region 57 19
RNAs and Repeat Sequences   
rRNA operons 4 4
tRNAs 58 57
Tandem repeats 22 23
Mobile Elements b   
Mobile integrase cassette (MIC) 4 3
IS3 family 13 14
IS21 family 10 7
IS30 family 9 5
IS256 family 4 7
ISL3 family 7 12
IS200/605 family 1 1
  1. a, refers to unique regions that encode functional or hypothetical genes in DNA regions > 3 kb, b, includes fragmented elements