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Entry version 6 (08 May 2019)
Sequence version 1 (07 Nov 2018)
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Protein

DNA topoisomerase 2

Gene

TOP2B

Organism
Ursus maritimus (Polar bear) (Thalarctos maritimus)
Status
Unreviewed-Annotation score:

Annotation score:2 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Protein inferred from homologyi <p>This indicates the type of evidence that supports the existence of the protein. Note that the ‘protein existence’ evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

Control of topological states of DNA by transient breakage and subsequent rejoining of DNA strands. Topoisomerase II makes double-strand breaks.UniRule annotation

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section describes the catalytic activity of an enzyme, i.e. a chemical reaction that the enzyme catalyzes.<p><a href='/help/catalytic_activity' target='_top'>More...</a></p>Catalytic activityi

  • ATP-dependent breakage, passage and rejoining of double-stranded DNA.UniRule annotation EC:5.6.2.3

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

GO - Biological processi

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Molecular functionDNA-bindingUniRule annotation, Isomerase, TopoisomeraseUniRule annotation
LigandATP-bindingUniRule annotation, Nucleotide-binding

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
DNA topoisomerase 2UniRule annotation (EC:5.6.2.3UniRule annotation)
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: ‘Name’, ‘Synonyms’, ‘Ordered locus names’ and ‘ORF names’.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:TOP2BImported
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiUrsus maritimus (Polar bear) (Thalarctos maritimus)Imported
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the ‘taxonomic identifier’ or ‘taxid’.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri29073 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaLaurasiatheriaCarnivoraCaniformiaUrsidaeUrsus
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000261680 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes_manual">proteome</a> can consist of several components. <br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Genome assembly

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction_section">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function_section">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Homodimer.UniRule annotation

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/family_and_domains_section">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini634 – 751ToprimInterPro annotationAdd BLAST118

Coiled coil

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Family and domains’ section denotes the positions of regions of coiled coil within the protein.<p><a href='/help/coiled' target='_top'>More...</a></p>Coiled coili1317 – 1337Sequence analysisAdd BLAST21

<p>This subsection of the ‘Family and domains’ section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the type II topoisomerase family.UniRule annotation

Keywords - Domaini

Coiled coilSequence analysis

Phylogenomic databases

KEGG Orthology (KO)

More...
KOi
K03164

Family and domain databases

Conserved Domains Database

More...
CDDi
cd00075 HATPase_c, 1 hit
cd00187 TOP4c, 1 hit
cd03365 TOPRIM_TopoIIA, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
1.10.268.10, 1 hit
3.30.230.10, 1 hit
3.30.565.10, 1 hit
3.40.50.670, 1 hit
3.90.199.10, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR012542 DTHCT
IPR003594 HATPase_C
IPR036890 HATPase_C_sf
IPR020568 Ribosomal_S5_D2-typ_fold
IPR014721 Ribosomal_S5_D2-typ_fold_subgr
IPR001241 Topo_IIA
IPR013760 Topo_IIA-like_dom_sf
IPR002205 Topo_IIA_A/C
IPR013758 Topo_IIA_A/C_ab
IPR013757 Topo_IIA_A_a_sf
IPR013759 Topo_IIA_B_C
IPR013506 Topo_IIA_bsu_dom2
IPR018522 TopoIIA_CS
IPR031660 TOPRIM_C
IPR006171 TOPRIM_domain
IPR034157 TOPRIM_TopoII

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00204 DNA_gyraseB, 1 hit
PF00521 DNA_topoisoIV, 1 hit
PF08070 DTHCT, 1 hit
PF02518 HATPase_c, 1 hit
PF01751 Toprim, 1 hit
PF16898 TOPRIM_C, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00433 TOP2c, 1 hit
SM00434 TOP4c, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF54211 SSF54211, 1 hit
SSF55874 SSF55874, 1 hit
SSF56719 SSF56719, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00177 TOPOISOMERASE_II, 1 hit
PS50880 TOPRIM, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence_length">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>.<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

A0A384DS33-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MREVWAVDWE SAAYGMKWMR SSGEEGEKGK AKDASLGTPV LRSRFLILPG
60 70 80 90 100
FPLPTTIKFS NILQNENNLA TLVLELPALW KRKQVSQYFH KNKISYIYYS
110 120 130 140 150
VFTLRRQKAQ RFMCERKFDK AIRFTRSLIF ETLSLARMTT FELDRVVGFG
160 170 180 190 200
VVAWDQKAFT SMVIVKFLIF MPMIENSSKL MTLFDQNNAA KKEESETANK
210 220 230 240 250
NDSSKKLSVE RVYQKKTQLE HILLRPDTYI GSVEPLTQLM WVYDEDVGMN
260 270 280 290 300
CREVTFVPGL YKIFDEILVN AADNKQRDKN MTCIKVSIDP ESNIVSIWNN
310 320 330 340 350
GKGIPVVEHK VEKVYVPALI FGQLLTSSNY DDDEKKVTGG RNGYGAKLCN
360 370 380 390 400
IFSTKFTVET ACKEYKHSFK QTWMNNMMKT SEAKIKHFDG EDYTCITFQP
410 420 430 440 450
DLSKFKMEKL DKDIVALMTR RAYDLAGSCK GVKVMFNGKK LPVNGFRSYV
460 470 480 490 500
DLYVKDKLDE TGVALKVIHE LANERWDVCL TLSEKGFQQI SFVNSIATTK
510 520 530 540 550
GGRHVDYVVD QVVGKLIEVV KKKNKAGVSV KPFQVKNHIW VFINCLIENP
560 570 580 590 600
TFDSQTKENM TLQPKSFGSK CQLSEKFFKA ASNCGIVESI LNWVKFKAQT
610 620 630 640 650
QLNKKCSSVK YSKIKGIPKL DDANDAGGKH SLECTLILTE GDSAKSLAVS
660 670 680 690 700
GLGVIGRDRY GVFPLRGKIL NVREASHKQI MENAEINNII KIVGLQYKKS
710 720 730 740 750
YDDAESLKTL RYGKIMIMTD QDQDGSHIKG LLINFIHHNW PSLLKHGFLE
760 770 780 790 800
EFITPIVKAS KNKQELSFYS IPEFDEWKKH IENQKAWKIK YYKGLGTSTA
810 820 830 840 850
KEAKEYFADM ERHRILFRYA GPEDDAAITL AFSKKKIDDR KEWLTNFMED
860 870 880 890 900
RRQRRLHGLP EQFLYGTATK HLTYNDFINK ELILFSNSDN ERSIPSLVDG
910 920 930 940 950
FKPGQRKVLF TCFKRNDKRE VKVAQLAGSV AEMSAYHHGE QALMMTIVNL
960 970 980 990 1000
AQNFVGSNNI NLLQPIGQFG TRLHGGKDAA SPRYIFTMLS SLSRLLFPAV
1010 1020 1030 1040 1050
DDNLLKFLYD DNQRVEPEWY IPIIPMVLIN GAEGIGTGWA CKLPNYDARE
1060 1070 1080 1090 1100
IVNNVRRMLD GLDPHPMLPN YKNFKGTIQE LGQNQYAVSG EIFVVDRNTV
1110 1120 1130 1140 1150
EITELPVRTW TQVYKEQVLE PMLNGTDKTP ALISDYKEYH TDTTVKFVVK
1160 1170 1180 1190 1200
MTEEKLAQAE AAGLHKVFKL QTTLTCNSMV LFDHMGCLKK YETVQDILKE
1210 1220 1230 1240 1250
FFDLRLSYYG LRKEWLVGML GAESTKLNNQ ARFILEKIQG KITIENRSKK
1260 1270 1280 1290 1300
DLIQMLVQRG YESDPVKAWK EAQEKAAEEE ETQNQHDDSS SDSGTPSGPD
1310 1320 1330 1340 1350
FNYILNMSLW SLTKEKVEEL IKQRDSKGRE VNDLKRKSPS DLWKEDLAAF
1360 1370 1380 1390 1400
VEELDKVEAQ EREDILAGMA GKAIKGKVGK PKVKKLQLEE TMPSPYGRRI
1410 1420 1430 1440 1450
VPEITAMKAD ASKKLLKKKK GDLDTTAVKV EYDEEFSGTP VEGTGEEALI
1460 1470 1480 1490 1500
PSAPVNKGPK PKREKKEPGT RVRKTPTSAG KSSAKKVKKR NPWSDDESKS
1510 1520 1530 1540 1550
ESDLEETEPV VIPRDSLLRR AAAERPKYTF DFSEEEDDDA DDDDDNNDLE
1560 1570 1580 1590 1600
ELKVKASPIT NDGEDEFVPS DGLDKDEYTF SPGKSKATPE KSSHDKKSQD
1610 1620 1630 1640 1650
FGTLFSFPSY SQKSEDDSAK FDSNEEDSAS VFSPSFGLKQ TDKVPSKTVA
1660 1670 1680 1690 1700
AKKGKPSSDT TAKPKRAPKQ KKVEPINSDS DSEFGIPKKT TPPKGKGRGA
1710 1720 1730 1740 1750
KKRKASGSEN EGDYNPGRKT SRTASKKPKK TSFDQDSDVD IFPSDFTSEP
1760 1770 1780
PSLPRTGRAR KEVKYFAESD EEEDVDFAMF N
Length:1,781
Mass (Da):202,023
Last modified:November 7, 2018 - v1
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:i7BF88BF51920E87D
GO

Sequence databases

NCBI Reference Sequences

More...
RefSeqi
XP_008709803.1, XM_008711581.1

Genome annotation databases

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
103682010

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
umr:103682010

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

RefSeqiXP_008709803.1, XM_008711581.1

3D structure databases

Database of comparative protein structure models

More...
ModBasei
Search...

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

SWISS-MODEL Interactive Workspace

More...
SWISS-MODEL-Workspacei
Submit a new modelling project...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi103682010
KEGGiumr:103682010

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
7155

Phylogenomic databases

KOiK03164

Family and domain databases

CDDicd00075 HATPase_c, 1 hit
cd00187 TOP4c, 1 hit
cd03365 TOPRIM_TopoIIA, 1 hit
Gene3Di1.10.268.10, 1 hit
3.30.230.10, 1 hit
3.30.565.10, 1 hit
3.40.50.670, 1 hit
3.90.199.10, 1 hit
InterProiView protein in InterPro
IPR012542 DTHCT
IPR003594 HATPase_C
IPR036890 HATPase_C_sf
IPR020568 Ribosomal_S5_D2-typ_fold
IPR014721 Ribosomal_S5_D2-typ_fold_subgr
IPR001241 Topo_IIA
IPR013760 Topo_IIA-like_dom_sf
IPR002205 Topo_IIA_A/C
IPR013758 Topo_IIA_A/C_ab
IPR013757 Topo_IIA_A_a_sf
IPR013759 Topo_IIA_B_C
IPR013506 Topo_IIA_bsu_dom2
IPR018522 TopoIIA_CS
IPR031660 TOPRIM_C
IPR006171 TOPRIM_domain
IPR034157 TOPRIM_TopoII
PfamiView protein in Pfam
PF00204 DNA_gyraseB, 1 hit
PF00521 DNA_topoisoIV, 1 hit
PF08070 DTHCT, 1 hit
PF02518 HATPase_c, 1 hit
PF01751 Toprim, 1 hit
PF16898 TOPRIM_C, 1 hit
SMARTiView protein in SMART
SM00433 TOP2c, 1 hit
SM00434 TOP4c, 1 hit
SUPFAMiSSF54211 SSF54211, 1 hit
SSF55874 SSF55874, 1 hit
SSF56719 SSF56719, 1 hit
PROSITEiView protein in PROSITE
PS00177 TOPOISOMERASE_II, 1 hit
PS50880 TOPRIM, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the ‘Entry information’ section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiA0A384DS33_URSMA
<p>This subsection of the ‘Entry information’ section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called ‘Primary (citable) accession number’.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: A0A384DS33
<p>This subsection of the ‘Entry information’ section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification (‘Last modified’). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/TrEMBL: November 7, 2018
Last sequence update: November 7, 2018
Last modified: May 8, 2019
This is version 6 of the entry and version 1 of the sequence. See complete history.
<p>This subsection of the ‘Entry information’ section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiUnreviewed (UniProtKB/TrEMBL)

<p>This section contains any relevant information that doesn’t fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteomeImported
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Main funding by: National Institutes of Health

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