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TOP2A DNA topoisomerase II alpha [ Homo sapiens (human) ]

Gene ID: 7153, updated on 22-May-2022

Summary

Official Symbol
TOP2Aprovided by HGNC
Official Full Name
DNA topoisomerase II alphaprovided by HGNC
Primary source
HGNC:HGNC:11989
See related
Ensembl:ENSG00000131747 MIM:126430; AllianceGenome:HGNC:11989
Gene type
protein coding
RefSeq status
REVIEWED
Organism
Homo sapiens
Lineage
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
Also known as
TOP2; TP2A; TOPIIA; TOP2alpha
Summary
This gene encodes a DNA topoisomerase, an enzyme that controls and alters the topologic states of DNA during transcription. This nuclear enzyme is involved in processes such as chromosome condensation, chromatid separation, and the relief of torsional stress that occurs during DNA transcription and replication. It catalyzes the transient breaking and rejoining of two strands of duplex DNA which allows the strands to pass through one another, thus altering the topology of DNA. Two forms of this enzyme exist as likely products of a gene duplication event. The gene encoding this form, alpha, is localized to chromosome 17 and the beta gene is localized to chromosome 3. The gene encoding this enzyme functions as the target for several anticancer agents and a variety of mutations in this gene have been associated with the development of drug resistance. Reduced activity of this enzyme may also play a role in ataxia-telangiectasia. [provided by RefSeq, Jul 2010]
Expression
Biased expression in testis (RPKM 34.8), lymph node (RPKM 21.9) and 13 other tissues See more
Orthologs
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Genomic context

See TOP2A in Genome Data Viewer
Location:
17q21.2
Exon count:
36
Annotation release Status Assembly Chr Location
110 current GRCh38.p14 (GCF_000001405.40) 17 NC_000017.11 (40388525..40417896, complement)
110 current T2T-CHM13v2.0 (GCF_009914755.1) 17 NC_060941.1 (41252019..41281395, complement)
105.20220307 previous assembly GRCh37.p13 (GCF_000001405.25) 17 NC_000017.10 (38544777..38574148, complement)

Chromosome 17 - NC_000017.11Genomic Context describing neighboring genes Neighboring gene RNA, 5S ribosomal pseudogene 441 Neighboring gene kelch repeat and BTB domain containing 2 pseudogene Neighboring gene ribosomal protein L23a pseudogene 75 Neighboring gene insulin like growth factor binding protein 4

Genomic regions, transcripts, and products

Bibliography

GeneRIFs: Gene References Into Functions

What's a GeneRIF?

HIV-1 interactions

Replication interactions

Interaction Pubs
Knockdown of TOP2A, TOP2B, or TOP2A/2B by siRNA significantly decreases HIV-1 replication in Sup T1 cells PubMed

Protein interactions

Protein Gene Interaction Pubs
Envelope surface glycoprotein gp120 env HIV-1 gp120 is identified to have a physical interaction with topoisomerase (DNA) II alpha 170kDa (TOP2A) in human HEK293 and/or Jurkat cell lines by using affinity tagging and purification mass spectrometry analyses PubMed
Tat tat Interaction of HIV-1 Tat with TOP2A in T-cells is identified by a proteomic strategy based on affinity chromatography coupled with mass spectrometry PubMed
capsid gag Knockdown of TOP2A, TOP2B, or TOP2A/2B by siRNA significantly decreases p24 levels in HIV-1 infected cell culture supernatants when compared to control PubMed
reverse transcriptase gag-pol HIV-1 RT co-localizes with TOP2A and TOP2B in cytosol of HIV-1 infected Sup T1 and PBMC cells PubMed

Go to the HIV-1, Human Interaction Database

Pathways from PubChem

Interactions

Products Interactant Other Gene Complex Source Pubs Description

General gene information

Markers

Homology

Gene Ontology Provided by GOA

Function Evidence Code Pubs
enables ATP binding IEA
Inferred from Electronic Annotation
more info
 
enables ATP-dependent activity, acting on DNA IDA
Inferred from Direct Assay
more info
PubMed 
enables DNA binding IDA
Inferred from Direct Assay
more info
PubMed 
enables DNA binding, bending IDA
Inferred from Direct Assay
more info
PubMed 
enables DNA topoisomerase type II (double strand cut, ATP-hydrolyzing) activity IDA
Inferred from Direct Assay
more info
PubMed 
enables DNA topoisomerase type II (double strand cut, ATP-hydrolyzing) activity IMP
Inferred from Mutant Phenotype
more info
PubMed 
enables RNA binding HDA PubMed 
enables chromatin binding IDA
Inferred from Direct Assay
more info
PubMed 
enables enzyme binding IPI
Inferred from Physical Interaction
more info
PubMed 
enables histone deacetylase binding IPI
Inferred from Physical Interaction
more info
PubMed 
enables magnesium ion binding IDA
Inferred from Direct Assay
more info
PubMed 
enables protein C-terminus binding IPI
Inferred from Physical Interaction
more info
PubMed 
enables protein binding IPI
Inferred from Physical Interaction
more info
PubMed 
enables protein heterodimerization activity IPI
Inferred from Physical Interaction
more info
PubMed 
enables protein homodimerization activity IPI
Inferred from Physical Interaction
more info
PubMed 
enables protein kinase C binding IPI
Inferred from Physical Interaction
more info
PubMed 
enables ubiquitin binding IMP
Inferred from Mutant Phenotype
more info
PubMed 
Process Evidence Code Pubs
involved_in DNA ligation IDA
Inferred from Direct Assay
more info
PubMed 
involved_in DNA topological change IDA
Inferred from Direct Assay
more info
PubMed 
involved_in DNA topological change IMP
Inferred from Mutant Phenotype
more info
PubMed 
involved_in apoptotic chromosome condensation IBA
Inferred from Biological aspect of Ancestor
more info
PubMed 
involved_in apoptotic chromosome condensation IDA
Inferred from Direct Assay
more info
PubMed 
involved_in cellular response to DNA damage stimulus IDA
Inferred from Direct Assay
more info
PubMed 
involved_in chromosome segregation IMP
Inferred from Mutant Phenotype
more info
PubMed 
involved_in embryonic cleavage IEA
Inferred from Electronic Annotation
more info
 
involved_in female meiotic nuclear division IEA
Inferred from Electronic Annotation
more info
 
involved_in hematopoietic progenitor cell differentiation IEA
Inferred from Electronic Annotation
more info
 
involved_in negative regulation of DNA duplex unwinding IMP
Inferred from Mutant Phenotype
more info
PubMed 
involved_in positive regulation of apoptotic process IDA
Inferred from Direct Assay
more info
PubMed 
involved_in positive regulation of single stranded viral RNA replication via double stranded DNA intermediate IMP
Inferred from Mutant Phenotype
more info
PubMed 
involved_in positive regulation of transcription by RNA polymerase II IEA
Inferred from Electronic Annotation
more info
 
involved_in regulation of circadian rhythm ISS
Inferred from Sequence or Structural Similarity
more info
 
involved_in resolution of meiotic recombination intermediates IBA
Inferred from Biological aspect of Ancestor
more info
PubMed 
involved_in rhythmic process IEA
Inferred from Electronic Annotation
more info
 
involved_in sister chromatid segregation IBA
Inferred from Biological aspect of Ancestor
more info
PubMed 
Component Evidence Code Pubs
part_of DNA topoisomerase type II (double strand cut, ATP-hydrolyzing) complex IDA
Inferred from Direct Assay
more info
PubMed 
colocalizes_with centriole IDA
Inferred from Direct Assay
more info
PubMed 
located_in chromosome, centromeric region IEA
Inferred from Electronic Annotation
more info
 
located_in condensed chromosome IEA
Inferred from Electronic Annotation
more info
 
located_in cytoplasm IDA
Inferred from Direct Assay
more info
PubMed 
located_in male germ cell nucleus IEA
Inferred from Electronic Annotation
more info
 
colocalizes_with nuclear chromosome IDA
Inferred from Direct Assay
more info
PubMed 
NOT located_in nucleolus IDA
Inferred from Direct Assay
more info
PubMed 
located_in nucleolus IDA
Inferred from Direct Assay
more info
PubMed 
located_in nucleoplasm IDA
Inferred from Direct Assay
more info
PubMed 
located_in nucleoplasm TAS
Traceable Author Statement
more info
 
is_active_in nucleus IBA
Inferred from Biological aspect of Ancestor
more info
PubMed 
located_in nucleus IDA
Inferred from Direct Assay
more info
PubMed 
part_of protein-containing complex IDA
Inferred from Direct Assay
more info
PubMed 
part_of ribonucleoprotein complex IDA
Inferred from Direct Assay
more info
PubMed 

General protein information

Preferred Names
DNA topoisomerase 2-alpha
Names
DNA gyrase
DNA topoisomerase (ATP-hydrolyzing)
DNA topoisomerase II, 170 kD
DNA topoisomerase II, alpha isozyme
topoisomerase (DNA) II alpha 170kDa
NP_001058.2
XP_005257689.1
XP_011523467.1

NCBI Reference Sequences (RefSeq)

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RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.

Genomic

  1. NG_027678.2 RefSeqGene

    Range
    5055..34426
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

  1. NM_001067.4NP_001058.2  DNA topoisomerase 2-alpha

    See identical proteins and their annotated locations for NP_001058.2

    Status: REVIEWED

    Source sequence(s)
    AC080112, BC140791, DB069825
    Consensus CDS
    CCDS45672.1
    UniProtKB/Swiss-Prot
    P11388
    Related
    ENSP00000411532.1, ENST00000423485.6
    Conserved Domains (1) summary
    PTZ00108
    Location:251497
    PTZ00108; DNA topoisomerase 2-like protein; Provisional

RefSeqs of Annotated Genomes: Homo sapiens Annotation Release 110 details...Open this link in a new tab

The following sections contain reference sequences that belong to a specific genome build. Explain

Reference GRCh38.p14 Primary Assembly

Genomic

  1. NC_000017.11 Reference GRCh38.p14 Primary Assembly

    Range
    40388525..40417896 complement
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

  1. XM_005257632.2XP_005257689.1  DNA topoisomerase 2-alpha isoform X1

    Conserved Domains (8) summary
    cd03365
    Location:443563
    TOPRIM_TopoIIA; TOPRIM_TopoIIA: topoisomerase-primase (TOPRIM) nucleotidyl transferase/hydrolase domain of the type found in proteins of the type IIA family of DNA topoisomerases similar to Saccharomyces cerevisiae Topoisomerase II. TopoIIA enzymes cut both strands of ...
    cd00187
    Location:6991162
    TOP4c; DNA Topoisomerase, subtype IIA; domain A'; bacterial DNA topoisomerase IV (C subunit, ParC), bacterial DNA gyrases (A subunit, GyrA),mammalian DNA toposiomerases II. DNA topoisomerases are essential enzymes that regulate the conformational changes in DNA ...
    cd03481
    Location:253405
    TopoIIA_Trans_ScTopoIIA; TopoIIA_Trans_ScTopoIIA: Transducer domain, having a ribosomal S5 domain 2-like fold, of the type found in proteins of the type IIA family of DNA topoisomerases similar to Saccharomyces cerevisiae Topo IIA. S. cerevisiae Topo IIA is a homodimer encoded ...
    PTZ00108
    Location:131485
    PTZ00108; DNA topoisomerase 2-like protein; Provisional
    pfam02518
    Location:68173
    HATPase_c; Histidine kinase-, DNA gyrase B-, and HSP90-like ATPase
    pfam08070
    Location:14231509
    DTHCT; DTHCT (NUC029) region
    pfam15323
    Location:13451449
    Ashwin; Developmental protein
    pfam16898
    Location:561699
    TOPRIM_C; C-terminal associated domain of TOPRIM
  2. XM_011525165.3XP_011523467.1  DNA topoisomerase 2-alpha isoform X2

    Conserved Domains (6) summary
    cd03365
    Location:455575
    TOPRIM_TopoIIA; TOPRIM_TopoIIA: topoisomerase-primase (TOPRIM) nucleotidyl transferase/hydrolase domain of the type found in proteins of the type IIA family of DNA topoisomerases similar to Saccharomyces cerevisiae Topoisomerase II. TopoIIA enzymes cut both strands of ...
    cd00187
    Location:7111174
    TOP4c; DNA Topoisomerase, subtype IIA; domain A'; bacterial DNA topoisomerase IV (C subunit, ParC), bacterial DNA gyrases (A subunit, GyrA),mammalian DNA toposiomerases II. DNA topoisomerases are essential enzymes that regulate the conformational changes in DNA ...
    cd03481
    Location:265417
    TopoIIA_Trans_ScTopoIIA; TopoIIA_Trans_ScTopoIIA: Transducer domain, having a ribosomal S5 domain 2-like fold, of the type found in proteins of the type IIA family of DNA topoisomerases similar to Saccharomyces cerevisiae Topo IIA. S. cerevisiae Topo IIA is a homodimer encoded ...
    PTZ00108
    Location:251364
    PTZ00108; DNA topoisomerase 2-like protein; Provisional
    pfam02518
    Location:80185
    HATPase_c; Histidine kinase-, DNA gyrase B-, and HSP90-like ATPase
    pfam16898
    Location:573711
    TOPRIM_C; C-terminal associated domain of TOPRIM

Alternate T2T-CHM13v2.0

Genomic

  1. NC_060941.1 Alternate T2T-CHM13v2.0

    Range
    41252019..41281395 complement
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)