DNA, Catenated

**Definition:** CIRCULAR DNA that is interlaced together as links in a chain. It is used as an assay for the activity of DNA TOPOISOMERASES. Catenated DNA is attached loop to loop in contrast to CONCATENATED DNA which is attached end to end.

**Tree numbers:** - D02.251.500 - D13.444.308.283.084 - G02.111.570.820.486.212.084 - G05.360.580.156.084

**Synonyms:** - Catenated DNA - Catenanes, DNA - DNA, Catanates