Transposons families

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Prokaryotic Transposons Families 1. Composite or compound transposons, Tn10 [Under Construction] 2. Tn3 family transposon of the Tn3 group, Tn3 [Under Construction] 3. Tn3 family transposon of the Tn21 group, Tn5060 [Under Construction] 4. Tn7 family transposon [Under Construction] 5. Tn402 family transposon 6. Tn554 family transposon [Under Construction]

The Major Transposon Families.  The transposons are NOT to scale. The horizontal black bars above each indicate a length of 2 kb. Transposons are represented as yellow-filled boxes. Genes are represented as arrows within the transposon with the direction of expression Indicated by the arrow heads.Transposition-related genes are shown as lavender, resistance genes as red, integrin integrase as blue, genes with other functions in pink and hypothetical genes in magenta. Recombination sites are shown in green. 1) composite or compound transposon, Tn10. 2) Tn3 family transposon of the Tn3 group, Tn3. 3) Tn3 family transposon of the Tn21 group, Tn5060. 4) Tn7 family transposon, Tn7. 5) Tn402 family transposon, Tn402. 6) Tn554 family transposon, Tn554.

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Prokaryotic Transposons Families
1. Compound Transposons [Under Construction] 2. Tn3 [Under Construction] 3. Tn7 [Under Construction] 4. Tn402 5. Tn554 [Under Construction]

Example of Prokaryotic Transposable Element. (A) Genetic organization of the canonical TnXax1 located in X. citri subsp. citri strain 306 plasmid pXAC64. Genes are indicated by colored boxes, with the direction of transcription shown by the arrowheads. Transposition-related genes are shown in purple, and passenger genes in red and blue. The presumed resolution site is located between the tnpT and tnpS genes, as observed in the transposable element Tn4651. This includes two palindromes: IR1 and IR2 are probably part of the core site at which recombination occurs, recognized by the TnpS recombinase, whereas IRa and IRb are potential binding sites for TnpT. The terminal inverted repeats (IRL and IRR) are shown as black triangles. The convention used for orientation of the transposon is that the transposase (TnpA) is transcribed from left to right. TnpA is closely related to other Tn3-like elements from Shewanella (ISSod9; 47% identity), Acinetobacter (ISAcsp1; 46%), Arthrobacter (ISArsp6; 43%), Azospirillum (ISAzs17; 41%), Salmonella (ISSwi1; 42%), and Nostoc (ISNpu13; 43%) species and to the mercury resistance transposon Tn5044 from X. campestris (84%). (B) IRs identified from other Tn3-like transposable elements. All include the GAGGG tips sharing sequence similarities to TnXax1 IRs. These are TnPa43 from Pseudomonas aeruginosa, TnStma1 from Stenotrophomonas maltophilia strain D457, TnTin1 from Thiomonas intermedia strain K12, and TnXca1 from X. campestris pv. vesicatoria plasmid pXCV183 (extracted from Ferreira et al., 2015).

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