Table 1

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


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 Elementsb


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

a, refers to unique regions that encode functional or hypothetical genes in DNA regions > 3 kb, b, includes fragmented elements

Lee et al. BMC Genomics 2008 9:247   doi:10.1186/1471-2164-9-247