| 单词 | topological isomers of dna |
| 释义 | topological isomers of DNAtopological isomers of DNADNA molecules that are identical except for the number of times one strand of the double helix crosses over the other in a given length. Any change in this number (the linking number) requires that at least one strand must be broken. This process to change the linking number is catalysed by a TOPOISOMERASE. |
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