FIG. 1.

(A) Genetic structure of TMos composed of ISPme1 and variable 3′-end regions. The white arrow shows the direction of transcription of the transposase gene (tnp). Below, the proposed nomenclature of different size classes of TMos of one type is shown. (B) Genetic maps of four types of TMos identified by transposition into pMEC1 (only the longest class of a given type is presented). Endpoints of TMo(ISPme1)C6, TMo(ISPme1)D6, and TMo(ISPme1)D7, described further in this paper, are marked by gray arrowheads. Black arrows indicate the transcriptional orientations of the genes encoded by TMos. The putative function of the predicted ORFs is based on BLAST searches and a protein domain search. TP, terminal part; CoA, coenzyme A.