TABLE 1.

IS elements in the L. helveticus DPC 4571 genome

NameSize (bp)No. of ORFsInverted repeats (bp)aDirect repeats (bp)FamilyNo. of complete copies (pseudogenes)bNo. of partial copiesTransposase divergence (%)cTotal no. of copies
IS1201 1,387120/248IS256 30 (8)2932
ISL2 8581172IS5 17 (17)1118
ISL5 1,590148/640IS4 22
ISL7 1,239122/28NDd IS30 11
IS1165 1,553120/390ISL3 112
ISLjo1-like1,195124/320IS30 9 (7)469
ISLjo5 2,101200IS200-IS605 22
IS of Tn3692 1,482124/294IS3 2 (2)13
ISLhe1 982127/288IS982 18 (9)12719
ISLhe2 1,462110/10e 7ISL3 27 (6)21529
ISLhe4 1,392115/200IS110 5 (1)5
ISLhe6 1,305124/294IS3 4 (1)4
ISLhe61 1,465121/244IS3 5 (4)5
ISLhe12 1,53317/100IS607 616
ISLhe9 2,607213/17e 0IS605 33
ISLhe15 1,620117/2112ND21 (5)21523
ISLhe30 1,041120/250IS30 2 (2)13
ISLhe65 1,42619/11e 0IS605 27 (15)11028
ISLhe66 2,28013/427/275-10IS66 22
ISLhe60 2,302213/160IS605 5 (1)16
ISLhe63 1,898121/220ND10 (1)1311
Total197 (79)16213
  • a Number of base pairs conserved between right and left end repeats/length of repeat.

  • b Copies with interrupted transposase genes.

  • c Percent divergence between nonpseudogene transposase proteins as determined by ClustalV alignments.

  • d ND, not defined.

  • e Repeats within 15 to 20 bp of the terminus.