Gene Information
Gene NameTOP1
OrganismHomo sapiens (Human)
Gene Length765
Protein NamesDNA topoisomerase 1 (EC 5.6.2.1) (DNA topoisomerase I)
Target Namedna topoisomerase 1
Target TypeNA
Gene Age645 ( ENSG00000198900 )
Evolutionary StageEukaryota
AlphaFoldDBP11387
Gene CardTOP1
Uniprot IDP11387
PfamPF14370; PF01028; PF02919
In ASDyes
Allosteric Predictionyes (0.999746113)
Ortholog in AnimalsAlpaca_ TOP1 ( ortholog_one2one )
Dog_ TOP1 ( ortholog_one2one )
GuineaPig_ TOP1 ( ortholog_one2one )
Macaque_ TOP1 ( ortholog_one2one )
Mouse_ Top1 ( ortholog_one2one )
Rat_ Top1 ( ortholog_one2one )
Rabbit_ TOP1 ( ortholog_one2one )
OhnologsTOP1MT
ParalogsTOP1MT
TissueNA
Tissue SpecificityEndothelial cells. {ECO:0000269|PubMed:19168442}.
Pharmacological Animal Models0.041341(Chimpanzee);0.012514(Mouse);NULL(Rat);0.044444(Rabbit)
Gene Ontology
(biological process)
Gene Ontology
(cellular component)
Gene Ontology
(molecular function)
PDB 1A31  (X-ray  2.10A  1A35  (X-ray  2.50A  1A36  (X-ray  2.80A  1EJ9  (X-ray  2.60A  1K4S  (X-ray  3.20A  1K4T  (X-ray  2.10A  1LPQ  (X-ray  3.14A  1NH3  (X-ray  3.10A  1R49  (X-ray  3.13A  1RR8  (X-ray  2.60A  1RRJ  (X-ray  2.30A  1SC7  (X-ray  3.00A  1SEU  (X-ray  3.00A  1T8I  (X-ray  3.00A  1TL8  (X-ray  3.10A 
DBSNP rs6029542  rs267607131 
Subcellular location [CC]Nucleus, nucleolus {ECO:0000269|PubMed:12149243}. Nucleus, nucleoplasm {ECO:0000269|PubMed:12149243}. Note=Diffuse nuclear localization with some enrichment in nucleoli. On CPT treatment, cleared from nucleoli into nucleoplasm. Sumoylated forms found in both nucleoplasm and nucleoli.
Mouse PG classificationNA
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