Assays for DNA relaxation and DNA decatenation activities ofE. coli topoisomerase I are available.

E. coli DNA Topoisomerase I Assay Kit Plus (enzyme included) (Catalog number: DRA020KE): For measurement of DNA relaxation activity of topoisomerases in a 96-well or 384-well plate format; for 20 assays; E. coliTopo I is included.

E. coli DNA Topoisomerase I Assay Kit Plus-100 (enzyme included) (Catalog number: DRA100KE): For measurement of DNA relaxation activity of topoisomerases in a 96-well or 384-well plate format; for 100 assays; E. coliTopo I is included.

DNA Topoisomerase I assay reagent Set for HTS (enzyme not included) (Catalog number: DRA1000): For high throughput screen (HTS) of DNA Topoisomerase I inhibitors for the DNA relaxation activity in a 96-well or 384-well plate format; for 1000 assays; DNA or enzyme is not included.

E. coli 96-well E. coli Topo I DNA Decatenation Assay Plus (enzyme included) (Catalog number: T1DD-96KE): For measurement of E. colitopoisomerase I DNA decatenation activity in a 96-well plate format; for 96 assays; E. coliTopo I is included.