SeseCisland_2 also contains certain mobile elements, including an endonuclease relaxase (SeseC_01323), a bacterial mobilization protein (SeseC_01324) integrase/recombinase (SeseC_01328) and transposase protein (SeseC_01332).
pVT1 contains a number of mobile elements, including twelve Insertion Sequences or inactivated IS genes and an RS1 phage element related to the CTXphi phage of V. cholerae.
As a result, certain virulence factors are maintained on mobile elements, including GIs, which are thought to be related to phage [17].
Particularly, a high rate of intraspecies transfer of ACME-I.02 variant within the CC2 lineage was observed, which could be explained not only by the multiple ccr gene complexes frequently carried by these strains, but also to an enhanced capacity to accommodate multiple mobile elements, including ACME, SCCmec and other SCC elements, within the orfX [13].
Mobile elements, including introns, also had population specific profiles.
We have analyzed class I mobile elements including Mutator-like transposable element (MULE), CACTA and hAT as well as class II Helitron elements presented in these regions (Methods).
The backbone of the RM13514 chromosome is interrupted by numerous mobile elements, including prophage/prophage-like elements (20), integrated elements (7) or insertion sequences (91) (Table 1).
Other mobile elements including non-LTR retrotransposons (LINEs) and DNA transposons of the MuDR and En/Spm families were also detected.
This result is in line with previous findings of comparative genomics [ 51] that showed that A. baumannii SDF is riddled with numerous relics of mobile elements, including transposons, insertion sequences and prophage elements.
The case of the prokaryotic CRISPR-cas system of defense against mobile elements including plasmids and viruses is an interesting and much stronger case as covered by the author in a previous publication [ 67].
