TOP2A Gene (Protein Coding)

DNA Topoisomerase II Alpha

GC17M040388
GIFtS:
51
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... See more...

Aliases for TOP2A Gene

Aliases for TOP2A Gene

  • DNA Topoisomerase II Alpha 2 3 5
  • Topoisomerase (DNA) II Alpha 170kDa 2 3
  • DNA Topoisomerase II, Alpha Isozyme 3 4
  • DNA Topoisomerase 2-Alpha 3 4
  • TOP2 3 4
  • DNA Topoisomerase (ATP-Hydrolyzing) 3
  • DNA Topoisomerase II, 170 KD 3
  • EC 5.99.1.3 52
  • DNA Gyrase 3
  • EC 5.6.2.2 4
  • TP2A 3

External Ids for TOP2A Gene

Previous HGNC Symbols for TOP2A Gene

  • TOP2

Previous GeneCards Identifiers for TOP2A Gene

  • GC17M038044
  • GC17M040720
  • GC17M038453
  • GC17M038919
  • GC17M038920
  • GC17M035798
  • GC17M038544
  • GC17M034337

Summaries for TOP2A Gene

Entrez Gene Summary for TOP2A Gene

  • 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]

CIViC Summary for TOP2A Gene

GeneCards Summary for TOP2A Gene

TOP2A (DNA Topoisomerase II Alpha) is a Protein Coding gene. Diseases associated with TOP2A include Malignant Peripheral Nerve Sheath Tumor and Female Breast Cancer. Among its related pathways are Metabolism of proteins and Proteolysis Putative SUMO-1 pathway. Gene Ontology (GO) annotations related to this gene include protein heterodimerization activity. An important paralog of this gene is TOP2B.

UniProtKB/Swiss-Prot Summary for TOP2A Gene

  • Control of topological states of DNA by transient breakage and subsequent rejoining of DNA strands. Topoisomerase II makes double-strand breaks. Essential during mitosis and meiosis for proper segregation of daughter chromosomes. May play a role in regulating the period length of ARNTL/BMAL1 transcriptional oscillation (By similarity).

Tocris Summary for TOP2A Gene

  • Topoisomerases are ubiquitously expressed enzymes that overcome topological problems in genomic DNA, which can result from DNA replication, transcription and repair. Common problems such as knots and tangles are often resolved by topoisomerases.

Gene Wiki entry for TOP2A Gene

Additional gene information for TOP2A Gene

No data available for PharmGKB "VIP" Summary , Rfam classification and piRNA Summary for TOP2A Gene

Genomics for TOP2A Gene

GeneHancer (GH) Regulatory Elements for TOP2A Gene

Promoters and enhancers for TOP2A Gene
- Elite GeneHancer and/or Elite GeneHancer-gene association Download GeneHancer data from 2017 publication | Request up-to-date GeneHancer data (full dataset)

GeneHancers around TOP2A on UCSC Golden Path with GeneCards custom track

Cistromic (ChIP-Seq) regulation report from SPP (The Signaling Pathways Project) for TOP2A

Top Transcription factor binding sites by QIAGEN in the TOP2A gene promoter:
  • ATF-2
  • CRE-BP1
  • E47
  • GR
  • Msx-1
  • NF-kappaB
  • NF-kappaB1
  • RelA
  • Zic3

Genomic Locations for TOP2A Gene

Genomic Locations for TOP2A Gene
chr17:40,388,521-40,417,950
(GRCh38/hg38)
Size:
29,430 bases
Orientation:
Minus strand
chr17:38,544,768-38,574,202
(GRCh37/hg19)
Size:
29,435 bases
Orientation:
Minus strand

Genomic View for TOP2A Gene

Genes around TOP2A on UCSC Golden Path with GeneCards custom track

Cytogenetic band:
TOP2A Gene in genomic location: bands according to Ensembl, locations according to GeneLoc (and/or Entrez Gene and/or Ensembl if different)
Genomic Location for TOP2A Gene
GeneLoc Logo Genomic Neighborhood • Exon Structure • Gene Density

RefSeq DNA sequence for TOP2A Gene

Proteins for TOP2A Gene

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  • Protein details for TOP2A Gene (UniProtKB/Swiss-Prot)

    Protein Symbol:
    P11388-TOP2A_HUMAN
    Recommended name:
    DNA topoisomerase 2-alpha
    Protein Accession:
    P11388
    Secondary Accessions:
    • B2RTS1
    • Q71UN1
    • Q71UQ5
    • Q9HB24
    • Q9HB25
    • Q9HB26
    • Q9UP44
    • Q9UQP9

    Protein attributes for TOP2A Gene

    Size:
    1531 amino acids
    Molecular mass:
    174385 Da
    Cofactor:
    Name=Mg(2+); Xref=ChEBI:CHEBI:18420; Name=Mn(2+); Xref=ChEBI:CHEBI:29035; Name=Ca(2+); Xref=ChEBI:CHEBI:29108;
    Quaternary structure:
    • Homodimer. Interacts with COPS5. Interacts with RECQL5; this stimulates DNA decatenation. Interacts with SETMAR; stimulates the topoisomerase activity (PubMed:18790802, PubMed:20457750). Interacts with DHX9; this interaction occurs in a E2 enzyme UBE2I- and RNA-dependent manner, negatively regulates DHX9-mediated double-stranded DNA and RNA duplex helicase activity and stimulates TOP2A-mediated supercoiled DNA relaxation activity (PubMed:12711669). Interacts with HNRNPU (via C-terminus); this interaction protects the topoisomerase TOP2A from degradation and positively regulates the relaxation of supercoiled DNA in a RNA-dependent manner (By similarity). Interacts with MCM3AP isoform GANP (PubMed:23652018). Interacts with ERCC6 (PubMed:26030138).
    Miscellaneous:
    • Eukaryotic topoisomerase I and II can relax both negative and positive supercoils, whereas prokaryotic enzymes relax only negative supercoils.

    Three dimensional structures from OCA and Proteopedia for TOP2A Gene

    Alternative splice isoforms for TOP2A Gene

    UniProtKB/Swiss-Prot:

neXtProt entry for TOP2A Gene

Protein Expression for TOP2A Gene

See protein expression from ProteomicsDB, MOPED, PaxDb, and MaxQB

Selected DME Specific Peptides for TOP2A Gene

P11388:
  • LTKEKKDEL
  • FDSQTKE
  • DDRKEWL
  • PDLSKFKM
  • GLHKVFKLQT
  • INFIHHNWP
  • EEKLAEAE
  • VLIQRGY
  • FLYDDNQRVEPEWY
  • FLEEFITPI
  • TSSNYDD
  • RRAYDIAGSTKDVKVFLNG
  • GPEDDAAI
  • VTQQMWV
  • KVTGGRNGYGAKLCNIFST
  • KPGQRKVL
  • RPDTYIGSVE
  • DNERSIP
  • EMKAEAEK
  • LTCNSMVLFDH
  • PIIPMVL
  • KKKNKGG
  • AFYSLPEFEEWKS
  • ESILNWVKFKAQ
  • KTLRYGK
  • LLTSSNY
  • QARFILEK
  • VNAADNK
  • SDPVKAWKE
  • GLPEDYLYG
  • VVKKKNK
  • KDKLDETG
  • LDKDIVALM
  • FMEDRRQR
  • MIMTDQD
  • QLNKKCS
  • DGSHIKGL
  • GMLGAES
  • EYHTDTTV
  • NIFSTKF
  • CTLILTEG
  • KEYFADM
  • EFITPIVK
  • RWEVCLT
  • ENAEINN
  • KYYKGLGTS
  • NNGKGIP
  • GVFPLRGK
  • YKEQVLEPMLNGTEKTP
  • ASPRYIF
  • KGGRHVD
  • NGAEGIGTG
  • NLLQPIGQFGTRLHGGKD
  • LARLLFP
  • NQARFIL
  • VFLNGNKL
  • QLEHILLRPD
  • VGSNNLNLL
  • KRNPWSD
  • QVKNHMWIF
  • MWVYDEDVG
  • SFVNSIAT

Post-translational modifications for TOP2A Gene

  • Phosphorylation has no effect on catalytic activity. However, phosphorylation at Ser-1106 by CSNK1D/CK1 promotes DNA cleavable complex formation.
  • Ubiquitination at Lys123, Lys207, Lys227, Lys233, Lys251, Lys287, Lys321, Lys336, Lys386, Lys397, Lys466, Lys480, Lys520, Lys529, Lys614, Lys632, Lys676, Lys723, Lys821, Lys827, Lys1011, Lys1028, Lys1075, and Lys1204
  • Modification sites at PhosphoSitePlus

Other Protein References for TOP2A Gene

ENSEMBL proteins:
REFSEQ proteins:

Antibody Products

Domains & Families for TOP2A Gene

Gene Families for TOP2A Gene

HGNC:
Human Protein Atlas (HPA):
  • Cancer-related genes
  • Enzymes
  • FDA approved drug targets
  • Plasma proteins
  • Predicted intracellular proteins

Protein Domains for TOP2A Gene

Blocks:
  • ATP-binding region, ATPase-like
  • CCAAT-binding transcription factor subunit A signature
  • Topoisomerase II signature
  • DNA gyrase/topoisomerase IV, subunit A
  • DNA topoisomerase, type IIA, subunit B, conserved region
  • DTHCT
InterPro:
ProtoNet:

Suggested Antigen Peptide Sequences for TOP2A Gene

GenScript: Design optimal peptide antigens:
  • DNA topoisomerase 2 (C9J4C3_HUMAN)
  • DNA topoisomerase 2 (C9J5P2_HUMAN)
  • DNA topoisomerase II, alpha isozyme (TOP2A_HUMAN)

Graphical View of Domain Structure for InterPro Entry

P11388

UniProtKB/Swiss-Prot:

TOP2A_HUMAN :
  • The N-terminus has several structural domains; the ATPase domain (about residues 1-265), the transducer domain (about 266-428) and the toprim domain (455-572) (PubMed:25202966). Comparing different structures shows ATP hydrolysis induces domain shifts in the N-terminus that are probably part of the mechanism of DNA cleavage and rejoining (PubMed:25202966).
  • Belongs to the type II topoisomerase family.
Domain:
  • The N-terminus has several structural domains; the ATPase domain (about residues 1-265), the transducer domain (about 266-428) and the toprim domain (455-572) (PubMed:25202966). Comparing different structures shows ATP hydrolysis induces domain shifts in the N-terminus that are probably part of the mechanism of DNA cleavage and rejoining (PubMed:25202966).
Family:
  • Belongs to the type II topoisomerase family.
genes like me logo Genes that share domains with TOP2A: view

Function for TOP2A Gene

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Molecular function for TOP2A Gene

UniProtKB/Swiss-Prot Function:
Control of topological states of DNA by transient breakage and subsequent rejoining of DNA strands. Topoisomerase II makes double-strand breaks. Essential during mitosis and meiosis for proper segregation of daughter chromosomes. May play a role in regulating the period length of ARNTL/BMAL1 transcriptional oscillation (By similarity).
UniProtKB/Swiss-Prot CatalyticActivity:
Reaction=ATP-dependent breakage, passage and rejoining of double-stranded DNA.; EC=5.6.2.2; Evidence={ECO:0000255 PROSITE-ProRule:PRU00995, ECO:0000269 PubMed:19222228, ECO:0000269 PubMed:19697956};.
UniProtKB/Swiss-Prot EnzymeRegulation:
Specifically inhibited by the intercalating agent amsacrine.
GENATLAS Biochemistry:
DNA topoisomerase II alpha (170kDa),ubiquitous,markely upregulated in proliferating cells,catalyzing the ATP dependent breakage and rejoining of double strand of DNA,relaxing both positively and negatively supercoiled DNA,inhibited by Rb during cell cycle,target of several drugs widely used in the treatment of human cancers,including a variant associated with drug resistance,deleted or amplified simultaneously with ERBB2 in breast cancers

Enzyme Numbers (IUBMB) for TOP2A Gene

Phenotypes From GWAS Catalog for TOP2A Gene

Gene Ontology (GO) - Molecular Function for TOP2A Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0000287 magnesium ion binding IDA 22323612
GO:0003677 DNA binding IDA 9049244
GO:0003682 chromatin binding IDA 9049244
GO:0003723 RNA binding HDA 22681889
GO:0003916 DNA topoisomerase activity IEA --
genes like me logo Genes that share ontologies with TOP2A: view
genes like me logo Genes that share phenotypes with TOP2A: view

Human Phenotype Ontology for TOP2A Gene

HPO Id HPO Name Alternative Ids Definition Synonyms

Animal Model Products

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No data available for Animal Models , Transcription Factor Targets and HOMER Transcription for TOP2A Gene

Localization for TOP2A Gene

Subcellular locations from UniProtKB/Swiss-Prot for TOP2A Gene

Cytoplasm. Nucleus, nucleoplasm. Note=Generally located in the nucleoplasm.

Subcellular locations from

COMPARTMENTS
Extracellular space Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi Apparatus Nucleus Mitochondrion 0 1 2 3 4 5 Confidence
COMPARTMENTS Subcellular localization image for TOP2A gene
Compartment Confidence
nucleus 5
cytosol 3
plasma membrane 2
extracellular 2
cytoskeleton 2
mitochondrion 2
endoplasmic reticulum 2
peroxisome 1
endosome 1
lysosome 1
golgi apparatus 1

Subcellular locations from the

Human Protein Atlas (HPA)
  • Nucleoplasm (3)
  • Nucleoli (2)
See all subcellular structures

Gene Ontology (GO) - Cellular Components for TOP2A Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0000228 colocalizes_with nuclear chromosome IDA 9049244
GO:0000793 condensed chromosome IEA --
GO:0005634 nucleus IDA,IBA 10788521
GO:0005654 nucleoplasm TAS --
GO:0005730 NOT nucleolus IDA 9049244
genes like me logo Genes that share ontologies with TOP2A: view

Pathways & Interactions for TOP2A Gene

genes like me logo Genes that share pathways with TOP2A: view

Pathways by source for TOP2A Gene

1 KEGG pathway for TOP2A Gene
3 GeneGo (Thomson Reuters) pathways for TOP2A Gene
  • Cell cycle Transition and termination of DNA replication
  • Cell cycle_Chromosome condensation in prometaphase
  • Proteolysis Putative SUMO-1 pathway
2 Cell Signaling Technology pathways for TOP2A Gene

SIGNOR curated interactions for TOP2A Gene

Is activated by:
Other effect:

Gene Ontology (GO) - Biological Process for TOP2A Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0000712 resolution of meiotic recombination intermediates IBA 21873635
GO:0000819 sister chromatid segregation IBA 21873635
GO:0002244 hematopoietic progenitor cell differentiation IEA --
GO:0006259 DNA metabolic process IEA --
GO:0006265 DNA topological change IMP 12711669
genes like me logo Genes that share ontologies with TOP2A: view

Drugs & Compounds for TOP2A Gene

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  1. Drug

(96) Drugs for TOP2A Gene - From: DrugBank, PharmGKB, ClinicalTrials, ApexBio, DGIdb, HMDB, Tocris, and Novoseek

Name Status Disease Links Group Role Mechanism of Action Clinical Trials
Epirubicin Approved Pharma Target, inhibitor 468
Doxorubicin Approved, Investigational Pharma Target, inhibitor Topo II inhibitor,immunosuppresive antineoplastic antibiotic 2036
Etoposide Approved Pharma Target, inhibitor, Biomarker Topo II inhibitor, Topoisomerase 2 Inhibitors 1445
Teniposide Approved Pharma Target, inhibitor 21
Daunorubicin Approved Pharma Target, inhibitor DNA topoisomerase II inhibitor 365

(19) Additional Compounds for TOP2A Gene - From: Novoseek and Tocris

Name Synonyms Role CAS Number PubChem IDs PubMed IDs
Dexrazoxane hydrochloride
1263283-43-7
Doxorubicin hydrochloride
25316-40-9
Mitoxantrone dihydrochloride
70476-82-3

(4) Tocris Compounds for TOP2A Gene

Compound Action Cas Number
Dexrazoxane hydrochloride Topoisomerase II inhibitor 1263283-43-7
Doxorubicin hydrochloride Antitumor antibiotic agent. Inhibits DNA topoisomerase II 25316-40-9
Ellipticine Antitumor and intercalating agent; inhibits DNA topoisomerase II 519-23-3
Mitoxantrone dihydrochloride Topoisomerase II inhibitor; immunosuppressive and antineoplastic agent 70476-82-3

(30) ApexBio Compounds for TOP2A Gene

Compound Action Cas Number
(S)-10-Hydroxycamptothecin 19685-09-7
Amonafide DNA intercalator,Topo II inhibitor 69408-81-7
Amrubicin Topoisomerase II inhibitor, anthracycline agent 110267-81-7
Amsacrine Topoisomerase 2 inhibitor 51264-14-3
Amsacrine hydrochloride Topoisomerase 2 inhibitor 54301-15-4
Beta-Lapachone DNA topoisomerase I inhibitor,selective 4707-32-8
Camptothecin Topoisomerase I inhibitor,prototypic 7689-03-4
Ciprofloxacin 85721-33-1
Daunorubicin DNA topoisomerase II inhibitor 20830-81-3
Dexrazoxane HCl (ICRF-187, ADR-529) Topoisomerase II inhibitor,intracellular ion chelator,cardioprotective agent 149003-01-0
Doxorubicin Topo II inhibitor,immunosuppresive antineoplastic antibiotic 23214-92-8
Doxorubicin (Adriamycin) HCl Antitumour antibiotic,inhibits TOPO II. 25316-40-9
Ellipticine DNA topoisomerase II inhibitor 519-23-3
Epirubicin HCl Antibiotic antitumor agent 56390-09-1
Etoposide Topo II inhibitor 33419-42-0
Flumequine 42835-25-6
Gatifloxacin Fluoroquinolone antibiotic,inhibits bacterial TOPO II 112811-59-3
Idarubicin HCl Anthracycline and daunorubicin analog,topoisomerase inhibitor 57852-57-0
INNO-206 Prodrug of doxorubicin 1361644-26-9
Irinotecan Topoisomerase I inhibitor 97682-44-5
Mitoxantrone HCl Topoisomerase II inhibitor, anti-neoplastic drug 70476-82-3
Moxifloxacin HCl Fluoroquinolone antibiotic 186826-86-8
Novobiocin Sodium 1476-53-5
Ofloxacin Fluoroquinolones,antibiotics 82419-36-1
Pirarubicin Topo II inhibitor;antineoplastic;analogue of doxorubicin 72496-41-4
Podophyllotoxin 518-28-5
Teniposide 29767-20-2
Topotecan HCl Topoisomerase 1 inhibitor 119413-54-6
Voreloxin Topo II inhibitor 175414-77-4
Voreloxin Hydrochloride Antineoplastic naphthyridine analogue 175519-16-1
genes like me logo Genes that share compounds with TOP2A: view

Drug Products

Transcripts for TOP2A Gene

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  4. Clone

mRNA/cDNA for TOP2A Gene

1 REFSEQ mRNAs :
11 NCBI additional mRNA sequence :
5 Ensembl transcripts including schematic representations, and UCSC links to gene/alias where relevant :

Clone Products

Alternative Splicing Database (ASD) splice patterns (SP) for TOP2A Gene

ExUns: 1 ^ 2 ^ 3 ^ 4 ^ 5 ^ 6 ^ 7 ^ 8 ^ 9 ^ 10 ^ 11a · 11b ^ 12 ^ 13 ^ 14 ^ 15 ^ 16 ^ 17 ^ 18 ^ 19 ^ 20 ^ 21 ^ 22 ^ 23 ^ 24 ^ 25a ·
SP1: - -
SP2:
SP3:
SP4:

ExUns: 25b ^ 26 ^ 27 ^ 28a · 28b ^ 29 ^ 30 ^ 31 ^ 32 ^ 33 ^ 34a · 34b ^ 35
SP1:
SP2:
SP3:
SP4:

Relevant External Links for TOP2A Gene

GeneLoc Exon Structure for
TOP2A

Expression for TOP2A Gene

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mRNA expression in normal human tissues from GTEx, Illumina, BioGPS, and SAGE for TOP2A Gene

mRNA expression in normal human tissues for TOP2A Gene
mRNA expression by BioGPS for TOP2A GenemRNA expression by GTEx for TOP2A Gene

mRNA differential expression in normal tissues according to GTEx for TOP2A Gene

This gene is overexpressed in Testis (x8.6).

Protein differential expression in normal tissues from HIPED for TOP2A Gene

This gene is overexpressed in Testis (22.3), Ovary (21.2), Nasal epithelium (8.3), and Lung (7.4).

Integrated Proteomics: protein expression in normal tissues and cell lines from ProteomicsDB, MaxQB, and MOPED for TOP2A Gene



Transcriptomic regulation report from SPP (The Signaling Pathways Project) for TOP2A

SOURCE GeneReport for Unigene cluster for TOP2A Gene:

Hs.156346

Evidence on tissue expression from TISSUES for TOP2A Gene

  • Liver(3.7)
  • Nervous system(3.4)
  • Intestine(2.9)
  • Bone marrow(2.6)
  • Blood(2.4)
  • Lymph node(2.4)
  • Heart(2.2)
  • Lung(2.1)
  • Eye(2)

Phenotype-based relationships between genes and organs from Gene ORGANizer for TOP2A Gene

Germ Layers:
  • ectoderm
  • endoderm
  • mesoderm
Systems:
  • cardiovascular
  • digestive
  • immune
  • integumentary
  • nervous
  • skeletal muscle
  • skeleton
  • urinary
Regions:
Head and neck:
  • brain
  • cranial nerve
  • ear
  • eye
  • eyelid
  • face
  • head
  • jaw
  • mandible
  • maxilla
  • mouth
  • neck
  • skull
Thorax:
  • chest wall
  • clavicle
  • heart
  • rib
  • rib cage
  • scapula
  • sternum
Abdomen:
  • adrenal gland
  • intestine
  • kidney
  • large intestine
  • small intestine
Pelvis:
  • pelvis
Limb:
  • ankle
  • arm
  • digit
  • elbow
  • femur
  • fibula
  • finger
  • foot
  • forearm
  • hand
  • hip
  • humerus
  • knee
  • lower limb
  • radius
  • shin
  • shoulder
  • thigh
  • tibia
  • toe
  • ulna
  • upper limb
  • wrist
General:
  • blood
  • blood vessel
  • peripheral nervous system
  • red blood cell
  • skin
  • spinal column
  • spinal cord
  • sweat gland
  • vertebrae
  • white blood cell
genes like me logo Genes that share expression patterns with TOP2A: view

No data available for mRNA expression in embryonic tissues and stem cells from LifeMap Discovery , Protein tissue co-expression partners and mRNA Expression by UniProt/SwissProt for TOP2A Gene

Orthologs for TOP2A Gene

This gene was present in the common ancestor of animals and fungi.

Orthologs for TOP2A Gene

Organism Taxonomy Gene Similarity Type Details
chimpanzee
(Pan troglodytes)
 Mammalia TOP2A 31 30
  • 99 (n)
 OneToOne
cow
(Bos Taurus)
 Mammalia TOP2A 31 30
  • 92.11 (n)
 OneToOne
dog
(Canis familiaris)
 Mammalia TOP2A 31 30
  • 92.09 (n)
 OneToOne
mouse
(Mus musculus)
 Mammalia Top2a 17 31 30
  • 87.14 (n)
rat
(Rattus norvegicus)
 Mammalia Top2a 30
  • 86.34 (n)
oppossum
(Monodelphis domestica)
 Mammalia TOP2A 31
  • 84 (a)
 OneToOne
platypus
(Ornithorhynchus anatinus)
 Mammalia TOP2A 31
  • 79 (a)
 OneToOne
chicken
(Gallus gallus)
 Aves TOP2A 31 30
  • 72.54 (n)
 OneToOne
lizard
(Anolis carolinensis)
 Reptilia TOP2A 31
  • 72 (a)
 OneToOne
tropical clawed frog
(Silurana tropicalis)
 Amphibia topoii 30
  • 69.8 (n)
African clawed frog
(Xenopus laevis)
 Amphibia LOC398512 30
zebrafish
(Danio rerio)
 Actinopterygii top2a 31 30
  • 66.05 (n)
 OneToOne
wufc08c07 30
fruit fly
(Drosophila melanogaster)
 Insecta Top2 31 32 30
  • 59.99 (n)