Words similar to topoisomerase
Example sentences for: topoisomerase
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It also has high affinity for binding to single-stranded DNA on its own when separated from the three tetracysteine motifs [ 36 ] . Based on the structural and DNA-binding properties of the E. coli topoisomerase I 14 kDa domain, one can conclude that it is possible for a subdomain in topoisomerase I to lose the Zn(II) binding cysteines during evolution and still maintains the Zn-ribbon structure and single-strand DNA binding properties [ 7 ] .
High concentration of DNA substrate is required to favor formation of catenanes catalyzed by topoisomerase I, and the enzyme also has to be present in higher concentration compared to the relaxation reaction.
Top67 can recognize cleavage sites preferred by E. coliDNA topoisomerase I
The double-stranded DNA-binding activity in E. coli topoisomerase III required for highly efficient decatenation activity is attributed to a 17-amino-acid residue with no counterpart in E. coli topoisomerase I [ 28 29 ] . It may be required for interaction with the passing double-strand of DNA in the decatenation mechanism.
A possible reversal mechanism was explored by studying the cell cycle, intracellular drug accumulation and the expression of mRNA and proteins of MDR1, glutathione S-transferase Pi (GSTπ), MDR-related protein (MRP) and topoisomerase IIα (TopoIIα).