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ONTOLOGY REPORT - ANNOTATIONS

Term:DNA negative supercoiling activity
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Accession:GO:0034335 term browser browse the term
Definition:Catalytic introduction of negative supercoils into a DNA molecule or region thereof. In bacteria, negative supercoils are only introduced by DNA gyrase, a type II topoisomerase, but not all DNA gyrases are capable of introducing supercoils. In bacteria, the level of supercoiling varies widely between species and has been characterized properly in only a handful of organisms. The best characterized enzyme, from E.coli, is exceptionally proficient at supercoiling and this ability is not representative of all bacteria.
Comment:Note that this term was reinstated from obsolete.
Synonyms:related_synonym: DNA gyrase activity

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DNA negative supercoiling activity term browser
Symbol Object Name Qualifiers Evidence Notes Source PubMed Reference(s) RGD Reference(s) Position
G LOC101702367 DNA topoisomerase 2-alpha enables IEA UniProt GO_REF:0000003 NCBI chrNW_004624795:2,903,686...2,927,028
Ensembl chrNW_004624795:2,898,038...2,926,049 		JBrowse link
G Top2b DNA topoisomerase II beta enables IEA UniProt GO_REF:0000003 NCBI chrNW_004624788:3,493,188...3,590,138 JBrowse link
Term paths to the root
Path 1
Term Annotations click to browse term
  molecular_function 16462
    ATP-dependent activity 546
      ATP-dependent activity, acting on DNA 116
        DNA topoisomerase type II (double strand cut, ATP-hydrolyzing) activity 3
          DNA negative supercoiling activity 2
Path 2
Term Annotations click to browse term
  molecular_function 16462
    catalytic activity 5198
      catalytic activity, acting on a nucleic acid 576
        catalytic activity, acting on DNA 233
          DNA topoisomerase activity 6
            DNA topoisomerase type II (double strand cut, ATP-hydrolyzing) activity 3
              DNA negative supercoiling activity 2
paths to the root