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Literature summary for 5.6.2.1 extracted from

  • Hotoda, N.; Hanai, R.
    Characterization of recombinant human DNA topoisomerase IIIalpha activity expressed in yeast (2000), J. Biochem., 127, 1109-1113.
    View publication on PubMed

Cloned(Commentary)

Cloned (Comment) Organism
expression mutant cells of Saccharomyces cerevisiae Homo sapiens

Organism

Organism UniProt Comment Textmining
Homo sapiens
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Purification (Commentary)

Purification (Comment) Organism
partial Homo sapiens

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
negatively supercoiled DNA the activity of the protein in supercoil removal is limited and biphasic: in the first phase it progressively changes the linking-number of hypernegatively supercoiled DNA, but only to the superhelicity of a regular negative supercoil, in the second phase the enzyme relaxes the DNA further, but only slightly and slowly. The C-terminal 334 amino acids are unnecessary for activity, suggesting that this region, and perhaps the entire protein is involved in a function other than supercoil removal Homo sapiens ?
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Synonyms

Synonyms Comment Organism
DNA topoisomerase IIIalpha
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Homo sapiens