Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.
Protein

DNA topoisomerase 1

Gene

topA

Organism
Escherichia coli (strain K12)
Status
Reviewed-Annotation score:

Annotation score:5 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>
-Experimental evidence at protein leveli <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

Releases the supercoiling and torsional tension of DNA, which is introduced during the DNA replication and transcription, by transiently cleaving and rejoining one strand of the DNA duplex. Introduces a single-strand break via transesterification at a target site in duplex DNA. The scissile phosphodiester is attacked by the catalytic tyrosine of the enzyme, resulting in the formation of a DNA-(5'-phosphotyrosyl)-enzyme intermediate and the expulsion of a 3'-OH DNA strand. The free DNA strand then undergoes passage around the unbroken strand, thus removing DNA supercoils. Finally, in the religation step, the DNA 3'-OH attacks the covalent intermediate to expel the active-site tyrosine and restore the DNA phosphodiester backbone.UniRule annotation3 Publications

<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

<p>This subsection of the ‘Function’ section provides information relevant to cofactors. A cofactor is any non-protein substance required for a protein to be catalytically active. Some cofactors are inorganic, such as the metal atoms zinc, iron, and copper in various oxidation states. Others, such as most vitamins, are organic.<p><a href='/help/cofactor' target='_top'>More...</a></p>Cofactori

Mg2+2 Publications, Mn2+2 Publications, Ca2+2 PublicationsNote: Binds two Mg2+ ions per subunit. The magnesium ions form salt bridges with both the protein and the DNA. Can also accept other divalent metal cations, such as Mn2+ or Ca2+.2 Publications

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Function’ section indicates at which position the protein binds a given metal ion. The nature of the metal is indicated in the ‘Description’ field.<p><a href='/help/metal' target='_top'>More...</a></p>Metal bindingi9Magnesium 1; catalyticUniRule annotation1
Metal bindingi111Magnesium 1; catalyticCurated1
Metal bindingi111Magnesium 2Curated1
Metal bindingi113Magnesium 2Curated1
<p>This subsection of the ‘Function’ section is used for enzymes and indicates the residues directly involved in catalysis.<p><a href='/help/act_site' target='_top'>More...</a></p>Active sitei319O-(5'-phospho-DNA)-tyrosine intermediateUniRule annotation3 Publications1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Function’ section specifies the position(s) and type(s) of zinc fingers within the protein.<p><a href='/help/zn_fing' target='_top'>More...</a></p>Zinc fingeri599 – 630C4-type 1Add BLAST32
Zinc fingeri662 – 689C4-type 2Add BLAST28
Zinc fingeri711 – 736C4-type 3Add BLAST26

<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

  • DNA binding Source: UniProtKB-KW
  • DNA topoisomerase activity Source: EcoCyc
  • DNA topoisomerase type I activity Source: EcoCyc
  • metal ion binding Source: UniProtKB-KW

GO - Biological processi

  • DNA topological change Source: EcoliWiki

<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-binding, Isomerase, Topoisomerase
LigandMagnesium, Metal-binding, Zinc

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
EcoCyc:EG11013-MONOMER
MetaCyc:EG11013-MONOMER

BRENDA Comprehensive Enzyme Information System

More...
BRENDAi
5.99.1.2 2026

<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 1UniRule annotation (EC:5.99.1.2UniRule annotation)
Alternative name(s):
DNA topoisomerase IUniRule annotation
Omega-protein
Relaxing enzyme
Swivelase
Untwisting enzyme
<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:topAUniRule annotation
Synonyms:supX
Ordered Locus Names:b1274, JW1266
<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>OrganismiEscherichia coli (strain K12)
<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 identifieri83333 [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 lineageiBacteriaProteobacteriaGammaproteobacteriaEnterobacteralesEnterobacteriaceaeEscherichia
<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
  • UP000000318 <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: Chromosome
  • UP000000625 Componenti: Chromosome

Organism-specific databases

Escherichia coli strain K12 genome database

More...
EcoGenei
EG11013 topA

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

GO - Cellular componenti

  • chromosome Source: InterPro
  • cytosol Source: EcoCyc

<p>This section provides information on the disease(s) and phenotype(s) associated with a protein.<p><a href='/help/pathology_and_biotech_section' target='_top'>More...</a></p>Pathology & Biotechi

Mutagenesis

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/manual/pathology_and_biotech_section">'Pathology and Biotech'</a> section describes the effect of the experimental mutation of one or more amino acid(s) on the biological properties of the protein.<p><a href='/help/mutagen' target='_top'>More...</a></p>Mutagenesisi9E → A: Abolishes enzyme activity. 1 Publication1
Mutagenesisi9E → Q: No effect on DNA cleavage activity. 1 Publication1
Mutagenesisi111D → A: Abolishes both magnesium binding and enzyme activity; when associated with A-113 and A-115. 1 Publication1
Mutagenesisi113D → A: Abolishes both magnesium binding and enzyme activity; when associated with A-111 and A-115. 1 Publication1
Mutagenesisi115E → A: Abolishes both magnesium binding and enzyme activity; when associated with A-111 and A-113. 1 Publication1
Mutagenesisi168R → A: Abolishes enzyme activity. 1 Publication1
Mutagenesisi172D → A: Abolishes enzyme activity. 1 Publication1
Mutagenesisi319Y → A: Abolishes enzyme activity. 1 Publication1
Mutagenesisi321R → A: Abolishes enzyme activity. 1 Publication1
Mutagenesisi321R → K: No effect. 1 Publication1
Mutagenesisi365H → A: No effect. 2 Publications1
Mutagenesisi365H → R: Increases DNA binding affinity. 2 Publications1
Mutagenesisi496T → A: No effect. 1 Publication1

Chemistry databases

ChEMBL database of bioactive drug-like small molecules

More...
ChEMBLi
CHEMBL3259513

Drug and drug target database

More...
DrugBanki
DB01812 Adenosine-3'-5'-Diphosphate
DB01643 Thymidine-5'-Phosphate

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘PTM / Processing’ section describes the extent of a polypeptide chain in the mature protein following processing.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00001451471 – 865DNA topoisomerase 1Add BLAST865

Proteomic databases

Encyclopedia of Proteome Dynamics

More...
EPDi
P06612

PaxDb, a database of protein abundance averages across all three domains of life

More...
PaxDbi
P06612

PRoteomics IDEntifications database

More...
PRIDEi
P06612

<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

Monomer.UniRule annotation2 Publications

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection describes interesting single amino acid sites on the sequence that are not defined in any other subsection. This subsection can be displayed in different sections (‘Function’, ‘PTM / Processing’, ‘Pathology and Biotech’) according to its content.<p><a href='/help/site' target='_top'>More...</a></p>Sitei33Interaction with DNA1
Sitei168Interaction with DNA1
Sitei169Interaction with DNA1
Sitei172Interaction with DNA1
Sitei177Interaction with DNA1
Sitei184Interaction with DNA1
Sitei321Interaction with DNA1
Sitei507Interaction with DNA1

<p>This subsection of the '<a href="http://www.uniprot.org/help/interaction_section%27">Interaction</a> section provides information about binary protein-protein interactions. The data presented in this section are a quality-filtered subset of binary interactions automatically derived from the <a href="http://www.ebi.ac.uk/intact/">IntAct database</a>. It is updated on a monthly basis. Each binary interaction is displayed on a separate line.<p><a href='/help/binary_interactions' target='_top'>More...</a></p>Binary interactionsi

WithEntry#Exp.IntActNotes
yigZP278623EBI-544172,EBI-561235

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGrid)

More...
BioGridi
4259579, 153 interactors

Database of interacting proteins

More...
DIPi
DIP-11011N

Protein interaction database and analysis system

More...
IntActi
P06612, 69 interactors

STRING: functional protein association networks

More...
STRINGi
316385.ECDH10B_1389

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

Secondary structure

1865
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

Protein Model Portal of the PSI-Nature Structural Biology Knowledgebase

More...
ProteinModelPortali
P06612

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...
SMRi
P06612

Database of comparative protein structure models

More...
ModBasei
Search...

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

Miscellaneous databases

Relative evolutionary importance of amino acids within a protein sequence

More...
EvolutionaryTracei
P06612

<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>Domaini3 – 142ToprimUniRule annotationAdd BLAST140

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Family and Domains’ section describes a region of interest that cannot be described in other subsections.<p><a href='/help/region' target='_top'>More...</a></p>Regioni192 – 197Interaction with DNA6

<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 IA topoisomerase family.UniRule annotation

Zinc finger

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Zinc fingeri599 – 630C4-type 1Add BLAST32
Zinc fingeri662 – 689C4-type 2Add BLAST28
Zinc fingeri711 – 736C4-type 3Add BLAST26

Keywords - Domaini

Repeat, Zinc-finger

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
ENOG4105C73 Bacteria
COG0550 LUCA
COG0551 LUCA

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
HOG000004018

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
P06612

KEGG Orthology (KO)

More...
KOi
K03168

Database for complete collections of gene phylogenies

More...
PhylomeDBi
P06612

Family and domain databases

Conserved Domains Database

More...
CDDi
cd00186 TOP1Ac, 1 hit
cd03363 TOPRIM_TopoIA_TopoI, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
1.10.290.10, 1 hit
1.10.460.10, 1 hit
2.70.20.10, 1 hit

HAMAP database of protein families

More...
HAMAPi
MF_00952 Topoisom_1_prok, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR000380 Topo_IA
IPR003601 Topo_IA_2
IPR023406 Topo_IA_AS
IPR013497 Topo_IA_cen
IPR013824 Topo_IA_cen_sub1
IPR013825 Topo_IA_cen_sub2
IPR013826 Topo_IA_cen_sub3
IPR023405 Topo_IA_core_domain
IPR003602 Topo_IA_DNA-bd_dom
IPR013498 Topo_IA_Znf
IPR005733 TopoI_bac-type
IPR013263 TopoI_Znr_bac
IPR028612 Topoisom_1_IA
IPR006171 TOPRIM_domain
IPR034149 TOPRIM_TopoI

The PANTHER Classification System

More...
PANTHERi
PTHR42785 PTHR42785, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF08272 Topo_Zn_Ribbon, 2 hits
PF01131 Topoisom_bac, 1 hit
PF01751 Toprim, 1 hit
PF01396 zf-C4_Topoisom, 2 hits

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR00417 PRTPISMRASEI

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00437 TOP1Ac, 1 hit
SM00436 TOP1Bc, 1 hit
SM00493 TOPRIM, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF56712 SSF56712, 1 hit

TIGRFAMs; a protein family database

More...
TIGRFAMsi
TIGR01051 topA_bact, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00396 TOPOISOMERASE_I_PROK, 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.

P06612-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MGKALVIVES PAKAKTINKY LGSDYVVKSS VGHIRDLPTS GSAAKKSADS
60 70 80 90 100
TSTKTAKKPK KDERGALVNR MGVDPWHNWE AHYEVLPGKE KVVSELKQLA
110 120 130 140 150
EKADHIYLAT DLDREGEAIA WHLREVIGGD DARYSRVVFN EITKNAIRQA
160 170 180 190 200
FNKPGELNID RVNAQQARRF MDRVVGYMVS PLLWKKIARG LSAGRVQSVA
210 220 230 240 250
VRLVVERERE IKAFVPEEFW EVDASTTTPS GEALALQVTH QNDKPFRPVN
260 270 280 290 300
KEQTQAAVSL LEKARYSVLE REDKPTTSKP GAPFITSTLQ QAASTRLGFG
310 320 330 340 350
VKKTMMMAQR LYEAGYITYM RTDSTNLSQD AVNMVRGYIS DNFGKKYLPE
360 370 380 390 400
SPNQYASKEN SQEAHEAIRP SDVNVMAESL KDMEADAQKL YQLIWRQFVA
410 420 430 440 450
CQMTPAKYDS TTLTVGAGDF RLKARGRILR FDGWTKVMPA LRKGDEDRIL
460 470 480 490 500
PAVNKGDALT LVELTPAQHF TKPPARFSEA SLVKELEKRG IGRPSTYASI
510 520 530 540 550
ISTIQDRGYV RVENRRFYAE KMGEIVTDRL EENFRELMNY DFTAQMENSL
560 570 580 590 600
DQVANHEAEW KAVLDHFFSD FTQQLDKAEK DPEEGGMRPN QMVLTSIDCP
610 620 630 640 650
TCGRKMGIRT ASTGVFLGCS GYALPPKERC KTTINLVPEN EVLNVLEGED
660 670 680 690 700
AETNALRAKR RCPKCGTAMD SYLIDPKRKL HVCGNNPTCD GYEIEEGEFR
710 720 730 740 750
IKGYDGPIVE CEKCGSEMHL KMGRFGKYMA CTNEECKNTR KILRNGEVAP
760 770 780 790 800
PKEDPVPLPE LPCEKSDAYF VLRDGAAGVF LAANTFPKSR ETRAPLVEEL
810 820 830 840 850
YRFRDRLPEK LRYLADAPQQ DPEGNKTMVR FSRKTKQQYV SSEKDGKATG
860
WSAFYVDGKW VEGKK
Length:865
Mass (Da):97,350
Last modified:February 1, 1995 - v2
<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:i8C13F767FE5B178C
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Sequence’ section reports difference(s) between the canonical sequence (displayed by default in the entry) and the different sequence submissions merged in the entry. These various submissions may originate from different sequencing projects, different types of experiments, or different biological samples. Sequence conflicts are usually of unknown origin.<p><a href='/help/conflict' target='_top'>More...</a></p>Sequence conflicti787P → R in AAA23641 (PubMed:3032952).Curated1

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

More...
GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
X04475 Genomic DNA Translation: CAA28164.1
M15041 Genomic DNA Translation: AAA23641.1
U00096 Genomic DNA Translation: AAC74356.1
AP009048 Genomic DNA Translation: BAA14811.1

Protein sequence database of the Protein Information Resource

More...
PIRi
E64875 ISECTP

NCBI Reference Sequences

More...
RefSeqi
NP_415790.1, NC_000913.3
WP_001297122.1, NZ_CP014272.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
AAC74356; AAC74356; b1274
BAA14811; BAA14811; BAA14811

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
945862

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ecj:JW1266
eco:b1274

Pathosystems Resource Integration Center (PATRIC)

More...
PATRICi
fig|1411691.4.peg.1010

<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

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X04475 Genomic DNA Translation: CAA28164.1
M15041 Genomic DNA Translation: AAA23641.1
U00096 Genomic DNA Translation: AAC74356.1
AP009048 Genomic DNA Translation: BAA14811.1
PIRiE64875 ISECTP
RefSeqiNP_415790.1, NC_000913.3
WP_001297122.1, NZ_CP014272.1

3D structure databases

Select the link destinations:

Protein Data Bank Europe

More...
PDBei

Protein Data Bank RCSB

More...
RCSB PDBi

Protein Data Bank Japan

More...
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1CY0X-ray2.45A1-597[»]
1CY1X-ray2.30A1-597[»]
1CY2X-ray2.30A1-597[»]
1CY4X-ray2.55A1-597[»]
1CY6X-ray2.50A1-597[»]
1CY7X-ray2.40A1-597[»]
1CY8X-ray2.45A1-597[»]
1CY9X-ray1.80A/B214-477[»]
1CYYX-ray2.15A/B214-477[»]
1ECLX-ray1.90A1-597[»]
1MW8X-ray1.90X1-592[»]
1MW9X-ray1.67X1-592[»]
1YUANMR-A745-865[»]
3PWTX-ray1.90A1-596[»]
3PX7X-ray2.30A1-595[»]
4RULX-ray2.90A2-865[»]
ProteinModelPortaliP06612
SMRiP06612
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

BioGridi4259579, 153 interactors
DIPiDIP-11011N
IntActiP06612, 69 interactors
STRINGi316385.ECDH10B_1389

Chemistry databases

ChEMBLiCHEMBL3259513
DrugBankiDB01812 Adenosine-3'-5'-Diphosphate
DB01643 Thymidine-5'-Phosphate

Proteomic databases

EPDiP06612
PaxDbiP06612
PRIDEiP06612

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiAAC74356; AAC74356; b1274
BAA14811; BAA14811; BAA14811
GeneIDi945862
KEGGiecj:JW1266
eco:b1274
PATRICifig|1411691.4.peg.1010

Organism-specific databases

EchoBASE - an integrated post-genomic database for E. coli

More...
EchoBASEi
EB1006
EcoGeneiEG11013 topA

Phylogenomic databases

eggNOGiENOG4105C73 Bacteria
COG0550 LUCA
COG0551 LUCA
HOGENOMiHOG000004018
InParanoidiP06612
KOiK03168
PhylomeDBiP06612

Enzyme and pathway databases

BioCyciEcoCyc:EG11013-MONOMER
MetaCyc:EG11013-MONOMER
BRENDAi5.99.1.2 2026

Miscellaneous databases

EvolutionaryTraceiP06612

Protein Ontology

More...
PROi
PR:P06612

Family and domain databases

CDDicd00186 TOP1Ac, 1 hit
cd03363 TOPRIM_TopoIA_TopoI, 1 hit
Gene3Di1.10.290.10, 1 hit
1.10.460.10, 1 hit
2.70.20.10, 1 hit
HAMAPiMF_00952 Topoisom_1_prok, 1 hit
InterProiView protein in InterPro
IPR000380 Topo_IA
IPR003601 Topo_IA_2
IPR023406 Topo_IA_AS
IPR013497 Topo_IA_cen
IPR013824 Topo_IA_cen_sub1
IPR013825 Topo_IA_cen_sub2
IPR013826 Topo_IA_cen_sub3
IPR023405 Topo_IA_core_domain
IPR003602 Topo_IA_DNA-bd_dom
IPR013498 Topo_IA_Znf
IPR005733 TopoI_bac-type
IPR013263 TopoI_Znr_bac
IPR028612 Topoisom_1_IA
IPR006171 TOPRIM_domain
IPR034149 TOPRIM_TopoI
PANTHERiPTHR42785 PTHR42785, 1 hit
PfamiView protein in Pfam
PF08272 Topo_Zn_Ribbon, 2 hits
PF01131 Topoisom_bac, 1 hit
PF01751 Toprim, 1 hit
PF01396 zf-C4_Topoisom, 2 hits
PRINTSiPR00417 PRTPISMRASEI
SMARTiView protein in SMART
SM00437 TOP1Ac, 1 hit
SM00436 TOP1Bc, 1 hit
SM00493 TOPRIM, 1 hit
SUPFAMiSSF56712 SSF56712, 1 hit
TIGRFAMsiTIGR01051 topA_bact, 1 hit
PROSITEiView protein in PROSITE
PS00396 TOPOISOMERASE_I_PROK, 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 nameiTOP1_ECOLI
<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: P06612
<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/Swiss-Prot: January 1, 1988
Last sequence update: February 1, 1995
Last modified: December 5, 2018
This is version 186 of the entry and version 2 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 statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

<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

3D-structure, Complete proteome, Reference proteome

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families
  3. Escherichia coli
    Escherichia coli (strain K12): entries and cross-references to EcoGene
UniProt is an ELIXIR core data resource
Main funding by: National Institutes of Health

We'd like to inform you that we have updated our Privacy Notice to comply with Europe’s new General Data Protection Regulation (GDPR) that applies since 25 May 2018.

Do not show this banner again