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Protein

Endonuclease III

Gene

nth

Organism
Escherichia coli O6:H1 (strain CFT073 / ATCC 700928 / UPEC)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

Functioni

DNA repair enzyme that has both DNA N-glycosylase activity and AP-lyase activity. The DNA N-glycosylase activity releases various damaged pyrimidines from DNA by cleaving the N-glycosidic bond, leaving an AP (apurinic/apyrimidinic) site. The AP-lyase activity cleaves the phosphodiester bond 3' to the AP site by a beta-elimination, leaving a 3'-terminal unsaturated sugar and a product with a terminal 5'-phosphate.UniRule annotation

Catalytic activityi

The C-O-P bond 3' to the apurinic or apyrimidinic site in DNA is broken by a beta-elimination reaction, leaving a 3'-terminal unsaturated sugar and a product with a terminal 5'-phosphate.UniRule annotation

Cofactori

[4Fe-4S] clusterUniRule annotationNote: Binds 1 [4Fe-4S] cluster.UniRule annotation

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi187 – 1871Iron-sulfur (4Fe-4S)UniRule annotation
Metal bindingi194 – 1941Iron-sulfur (4Fe-4S)UniRule annotation
Metal bindingi197 – 1971Iron-sulfur (4Fe-4S)UniRule annotation
Metal bindingi203 – 2031Iron-sulfur (4Fe-4S)

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Glycosidase, Hydrolase, Lyase

Keywords - Biological processi

DNA damage, DNA repair

Keywords - Ligandi

4Fe-4S, DNA-binding, Iron, Iron-sulfur, Metal-binding

Enzyme and pathway databases

BioCyciECOL199310:C2025-MONOMER.

Names & Taxonomyi

Protein namesi
Recommended name:
Endonuclease IIIUniRule annotation (EC:4.2.99.18UniRule annotation)
Alternative name(s):
DNA-(apurinic or apyrimidinic site) lyaseUniRule annotation
Gene namesi
Name:nthUniRule annotation
Ordered Locus Names:c2025
OrganismiEscherichia coli O6:H1 (strain CFT073 / ATCC 700928 / UPEC)
Taxonomic identifieri199310 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaEnterobacterialesEnterobacteriaceaeEscherichia
ProteomesiUP000001410 Componenti: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 211211Endonuclease IIIPRO_0000102211Add
BLAST

Interactioni

Protein-protein interaction databases

MINTiMINT-1223364.
STRINGi199310.c2025.

Structurei

3D structure databases

ProteinModelPortaliP0AB84.
SMRiP0AB84. Positions 1-211.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Domaini108 – 12720HhHUniRule annotationAdd
BLAST

Sequence similaritiesi

Belongs to the Nth/MutY family.UniRule annotation
Contains 1 HhH domain.UniRule annotation

Phylogenomic databases

HOGENOMiHOG000252206.
OMAiHHALILF.
OrthoDBiEOG6H4KC5.

Family and domain databases

Gene3Di1.10.1670.10. 1 hit.
1.10.340.30. 1 hit.
HAMAPiMF_00942. Nth.
InterProiIPR011257. DNA_glycosylase.
IPR004036. Endonuclease-III-like_CS2.
IPR004035. Endouclease-III_FeS-bd_BS.
IPR003651. Endouclease3_FeS-loop_motif.
IPR003265. HhH-GPD_domain.
IPR000445. HhH_motif.
IPR003583. Hlx-hairpin-Hlx_DNA-bd_motif.
IPR023170. HTH_base_excis_C.
IPR005759. Nth.
[Graphical view]
PfamiPF10576. EndIII_4Fe-2S. 1 hit.
PF00633. HHH. 1 hit.
PF00730. HhH-GPD. 1 hit.
[Graphical view]
PIRSFiPIRSF001435. Nth. 1 hit.
SMARTiSM00478. ENDO3c. 1 hit.
SM00525. FES. 1 hit.
SM00278. HhH1. 1 hit.
[Graphical view]
SUPFAMiSSF48150. SSF48150. 1 hit.
TIGRFAMsiTIGR01083. nth. 1 hit.
PROSITEiPS00764. ENDONUCLEASE_III_1. 1 hit.
PS01155. ENDONUCLEASE_III_2. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

P0AB84-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MNKAKRLEIL TRLRENNPHP TTELNFSSPF ELLIAVLLSA QATDVSVNKA
60 70 80 90 100
TAKLYPVANT PAAMLELGVE GVKTYIKTIG LYNSKAENII KTCRILLEQH
110 120 130 140 150
NGEVPEDRAA LEALPGVGRK TANVVLNTAF GWPTIAVDTH IFRVCNRTQF
160 170 180 190 200
APGKNVEQVE EKLLKVVPAE FKVDCHHWLI LHGRYTCIAR KPRCGSCIIE
210
DLCEYKEKVD I
Length:211
Mass (Da):23,562
Last modified:November 8, 2005 - v1
Checksum:iFF4245823B7F902B
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AE014075 Genomic DNA. Translation: AAN80485.1.

Genome annotation databases

EnsemblBacteriaiAAN80485; AAN80485; c2025.
PATRICi18281947. VBIEscCol75197_1892.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AE014075 Genomic DNA. Translation: AAN80485.1.

3D structure databases

ProteinModelPortaliP0AB84.
SMRiP0AB84. Positions 1-211.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

MINTiMINT-1223364.
STRINGi199310.c2025.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiAAN80485; AAN80485; c2025.
PATRICi18281947. VBIEscCol75197_1892.

Phylogenomic databases

HOGENOMiHOG000252206.
OMAiHHALILF.
OrthoDBiEOG6H4KC5.

Enzyme and pathway databases

BioCyciECOL199310:C2025-MONOMER.

Family and domain databases

Gene3Di1.10.1670.10. 1 hit.
1.10.340.30. 1 hit.
HAMAPiMF_00942. Nth.
InterProiIPR011257. DNA_glycosylase.
IPR004036. Endonuclease-III-like_CS2.
IPR004035. Endouclease-III_FeS-bd_BS.
IPR003651. Endouclease3_FeS-loop_motif.
IPR003265. HhH-GPD_domain.
IPR000445. HhH_motif.
IPR003583. Hlx-hairpin-Hlx_DNA-bd_motif.
IPR023170. HTH_base_excis_C.
IPR005759. Nth.
[Graphical view]
PfamiPF10576. EndIII_4Fe-2S. 1 hit.
PF00633. HHH. 1 hit.
PF00730. HhH-GPD. 1 hit.
[Graphical view]
PIRSFiPIRSF001435. Nth. 1 hit.
SMARTiSM00478. ENDO3c. 1 hit.
SM00525. FES. 1 hit.
SM00278. HhH1. 1 hit.
[Graphical view]
SUPFAMiSSF48150. SSF48150. 1 hit.
TIGRFAMsiTIGR01083. nth. 1 hit.
PROSITEiPS00764. ENDONUCLEASE_III_1. 1 hit.
PS01155. ENDONUCLEASE_III_2. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: CFT073 / ATCC 700928 / UPEC.

Entry informationi

Entry nameiEND3_ECOL6
AccessioniPrimary (citable) accession number: P0AB84
Secondary accession number(s): P20625
Entry historyi
Integrated into UniProtKB/Swiss-Prot: November 8, 2005
Last sequence update: November 8, 2005
Last modified: July 22, 2015
This is version 79 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into Uniref entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.