Plasmid Reference Center Registry of transposon(Tn) and insertion sequence (IS) allocations through December 1986

The current entries of transposable genetic elements (both Tn and IS) filed with the Plasmid Reference Center are tabulated. These include Tn entries 3601-4550 [entries 1-3600 are listed in Lederberg, Gene 16 (1981) 59-61 and 18 (1982) 366] and all the filed IS entries.